Identifying your 4.2L engine
02-23-2004, 12:46 PM
#31
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
with a used engine, I am hopeful you are correct.
Thanks Mike. That helps a lot.
Bill
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:403A31C1.63D68204@sympatico.ca...
> You can't have a 90, the cranks are different and the transmission will
> not bolt up to it without some serious machining or searching for parts.
>
> They changed to the YJ setup in 87.
>
> They used 2 engine blocks for the 1980 year. You got the later one or
> the 444 cast.
>
> That does not mean you got a 1980 'engine', just a block from that
> year. The crank could be any up to 86.
>
> If this is a built up short block, then the engine cast just came out of
> a pile they had around the shop and they put a CJ crank in it.
>
> All bets are off when talking built engines, nothing has to match up
> 'properly' and a block is basically a block.
>
> Not likely the fool paid $2000.00 for a 'used' short block, that is a
> really expensive rebuilt one's price.
>
> Emissions look at the heads and exterior junk.
>
> Mike
>
> William Oliveri wrote:
> >
> > Do you know what this means? Heavy 258 and Light 258?
> >
> > What would really help is to totally exclude 1990 year engines. I need
to
> > find out what the date code stamp is for a 1990 258.
> >
> > My situation is a little different. The previous owner had the short
block
> > replaced due to him pouring water on a over heated engine. I have all
the
> > receipts. He had the head serviced for over 1000.00 and replaced the
short
> > block with a used one for over 2000.00.
> >
> > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
an
> > 80 year block that would be very bad. Not to consider the smog logs
require
> > a newer or same year engine to be replaced.
> >
> > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > because 80 and 90 year blocks have 1/2" head bolts.
> >
> > Bill
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:403A0568.3A46B309@sympatico.ca...
> > > They warned about that on the first link Bill.
> > >
> > > Some of the numbers went on when it was made and some went on for the
> > > actual model year it was sold as or built for.
> > >
> > > Here is a quote:
> > >
> > > An important thing to remember about AMC engines is that changes were
> > > made on a calendar year basis, not model year. The engine plant ran on
> > > its own schedule! This is why some 1980 model vehicles have the
"heavy"
> > > 258 and others the "light" 258 -- changes were made early in calendar
> > > year 1980.
> > >
> > > Mike
> > >
> > > William Oliveri wrote:
> > > >
> > > > I stand corrected. C does not stand for carb and it does say the
dates
> > run
> > > > to 89.
> > > >
> > > > C- 258 2 bbl (4.2L, 76-89)
> > > >
> > > > However, every site I've looked at similar to this one:
> > > >
> > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > >
> > > > says that the serial number of 3235444 started in 81, not 80 which
is
> > why
> > > > it's confusing.
> > > >
> > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > search
> > > > for 3235444 and you'll see what I mean.
> > > >
> > > > Bill
> > > >
> > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > You are the one that posted the freaking link Bill!
> > > > >
> > > > > Did you not read it?
> > > > >
> > > > > I did.
> > > > >
> > > > > And no 'C' does 'not' stand for carb.
> > > > >
> > > > > Mike
> > > > >
> > > > > William Oliveri wrote:
> > > > > >
> > > > > > Cannot be. The block casting "444" was not used in 1980. C
does
> > stand
> > > > for
> > > > > > carb though.
> > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > >
> > > > > > > That is what the 'C' means.
> > > > > > >
> > > > > > > The '0' means 1980.
> > > > > > >
> > > > > > > Mike
> > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > >
> > > > > > > William Oliveri wrote:
> > > > > > > >
> > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > >
> > > > > > > > There are two main codes on a block that can help identify a
> > 4.2L
> > > > engine
> > > > > > > >
> > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
passenger
> > side
> > > > of
> > > > > > the
> > > > > > > > block just below and between #3 and #2 spark plugs holes.
It's
> > a
> > > > flat
> > > > > > plate
> > > > > > > > and has this format:
> > > > > > > >
> > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > >
> > > > > > > > 1. Year built code
> > > > > > > > 2 & 3. Number of the month
> > > > > > > > 4. Engine size/type code
> > > > > > > > 5 & 6. Day built
> > > > > > > >
> > > > > > > > Mine is 012C05
> > > > > > > >
> > > > > > > > Which comes out to:
> > > > > > > >
> > > > > > > > 0=1980 or 1990
> > > > > > > > 12=Dec
> > > > > > > > C=2v carb
> > > > > > > > 05=day of the month built
> > > > > > > >
> > > > > > > > See this site for more info:
> > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > >
> > > > > > > > I was unclear on whether this would be a 1980 or 1990
engine.
> > To
> > > > > > narrow
> > > > > > > > it down I located the Engine Serial number (2nd main code)
which
> > is
> > > > > > located
> > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > >
> > > > > > > > Mine reads: EF3235444
> > > > > > > >
> > > > > > > > When I looked for this number on remanufactured engine
sites I
> > see
> > > > > > that
> > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > >
> > > > > > > > Therefore the best determination I can make is this engine
is
> > a
> > > > 1990
> > > > > > made
> > > > > > > > engine.
> > > > > > > >
> > > > > > > > Hope this helps someone.
> > > > > > > >
> > > > > > > > Bill
with a used engine, I am hopeful you are correct.
Thanks Mike. That helps a lot.
Bill
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:403A31C1.63D68204@sympatico.ca...
> You can't have a 90, the cranks are different and the transmission will
> not bolt up to it without some serious machining or searching for parts.
>
> They changed to the YJ setup in 87.
>
> They used 2 engine blocks for the 1980 year. You got the later one or
> the 444 cast.
>
> That does not mean you got a 1980 'engine', just a block from that
> year. The crank could be any up to 86.
>
> If this is a built up short block, then the engine cast just came out of
> a pile they had around the shop and they put a CJ crank in it.
>
> All bets are off when talking built engines, nothing has to match up
> 'properly' and a block is basically a block.
>
> Not likely the fool paid $2000.00 for a 'used' short block, that is a
> really expensive rebuilt one's price.
>
> Emissions look at the heads and exterior junk.
>
> Mike
>
> William Oliveri wrote:
> >
> > Do you know what this means? Heavy 258 and Light 258?
> >
> > What would really help is to totally exclude 1990 year engines. I need
to
> > find out what the date code stamp is for a 1990 258.
> >
> > My situation is a little different. The previous owner had the short
block
> > replaced due to him pouring water on a over heated engine. I have all
the
> > receipts. He had the head serviced for over 1000.00 and replaced the
short
> > block with a used one for over 2000.00.
> >
> > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
an
> > 80 year block that would be very bad. Not to consider the smog logs
require
> > a newer or same year engine to be replaced.
> >
> > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > because 80 and 90 year blocks have 1/2" head bolts.
> >
> > Bill
> >
> > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > news:403A0568.3A46B309@sympatico.ca...
> > > They warned about that on the first link Bill.
> > >
> > > Some of the numbers went on when it was made and some went on for the
> > > actual model year it was sold as or built for.
> > >
> > > Here is a quote:
> > >
> > > An important thing to remember about AMC engines is that changes were
> > > made on a calendar year basis, not model year. The engine plant ran on
> > > its own schedule! This is why some 1980 model vehicles have the
"heavy"
> > > 258 and others the "light" 258 -- changes were made early in calendar
> > > year 1980.
> > >
> > > Mike
> > >
> > > William Oliveri wrote:
> > > >
> > > > I stand corrected. C does not stand for carb and it does say the
dates
> > run
> > > > to 89.
> > > >
> > > > C- 258 2 bbl (4.2L, 76-89)
> > > >
> > > > However, every site I've looked at similar to this one:
> > > >
> > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > >
> > > > says that the serial number of 3235444 started in 81, not 80 which
is
> > why
> > > > it's confusing.
> > > >
> > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > search
> > > > for 3235444 and you'll see what I mean.
> > > >
> > > > Bill
> > > >
> > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > You are the one that posted the freaking link Bill!
> > > > >
> > > > > Did you not read it?
> > > > >
> > > > > I did.
> > > > >
> > > > > And no 'C' does 'not' stand for carb.
> > > > >
> > > > > Mike
> > > > >
> > > > > William Oliveri wrote:
> > > > > >
> > > > > > Cannot be. The block casting "444" was not used in 1980. C
does
> > stand
> > > > for
> > > > > > carb though.
> > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > >
> > > > > > > That is what the 'C' means.
> > > > > > >
> > > > > > > The '0' means 1980.
> > > > > > >
> > > > > > > Mike
> > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > >
> > > > > > > William Oliveri wrote:
> > > > > > > >
> > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > >
> > > > > > > > There are two main codes on a block that can help identify a
> > 4.2L
> > > > engine
> > > > > > > >
> > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
passenger
> > side
> > > > of
> > > > > > the
> > > > > > > > block just below and between #3 and #2 spark plugs holes.
It's
> > a
> > > > flat
> > > > > > plate
> > > > > > > > and has this format:
> > > > > > > >
> > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > >
> > > > > > > > 1. Year built code
> > > > > > > > 2 & 3. Number of the month
> > > > > > > > 4. Engine size/type code
> > > > > > > > 5 & 6. Day built
> > > > > > > >
> > > > > > > > Mine is 012C05
> > > > > > > >
> > > > > > > > Which comes out to:
> > > > > > > >
> > > > > > > > 0=1980 or 1990
> > > > > > > > 12=Dec
> > > > > > > > C=2v carb
> > > > > > > > 05=day of the month built
> > > > > > > >
> > > > > > > > See this site for more info:
> > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > >
> > > > > > > > I was unclear on whether this would be a 1980 or 1990
engine.
> > To
> > > > > > narrow
> > > > > > > > it down I located the Engine Serial number (2nd main code)
which
> > is
> > > > > > located
> > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > >
> > > > > > > > Mine reads: EF3235444
> > > > > > > >
> > > > > > > > When I looked for this number on remanufactured engine
sites I
> > see
> > > > > > that
> > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > >
> > > > > > > > Therefore the best determination I can make is this engine
is
> > a
> > > > 1990
> > > > > > made
> > > > > > > > engine.
> > > > > > > >
> > > > > > > > Hope this helps someone.
> > > > > > > >
> > > > > > > > Bill
02-23-2004, 12:58 PM
#32
Guest
Posts: n/a
Re: Identifying your 4.2L engine
One way to tell 'maybe' is by just looking close at the oil pan gasket
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
02-23-2004, 12:58 PM
#33
Guest
Posts: n/a
Re: Identifying your 4.2L engine
One way to tell 'maybe' is by just looking close at the oil pan gasket
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
02-23-2004, 12:58 PM
#34
Guest
Posts: n/a
Re: Identifying your 4.2L engine
One way to tell 'maybe' is by just looking close at the oil pan gasket
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
or timing cover for RTV or gasket maker.
When someone installs a used engine, they don't mess with those covers
usually. Your compression is also correct for a 'new' engine.
A used 258 short block goes for a couple hundred dollars, not a couple
thousand....
Mike
William Oliveri wrote:
>
> Wow, Ok. Even though the receipts do not state "rebuild" but "replaced"
> with a used engine, I am hopeful you are correct.
>
> Thanks Mike. That helps a lot.
>
> Bill
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:403A31C1.63D68204@sympatico.ca...
> > You can't have a 90, the cranks are different and the transmission will
> > not bolt up to it without some serious machining or searching for parts.
> >
> > They changed to the YJ setup in 87.
> >
> > They used 2 engine blocks for the 1980 year. You got the later one or
> > the 444 cast.
> >
> > That does not mean you got a 1980 'engine', just a block from that
> > year. The crank could be any up to 86.
> >
> > If this is a built up short block, then the engine cast just came out of
> > a pile they had around the shop and they put a CJ crank in it.
> >
> > All bets are off when talking built engines, nothing has to match up
> > 'properly' and a block is basically a block.
> >
> > Not likely the fool paid $2000.00 for a 'used' short block, that is a
> > really expensive rebuilt one's price.
> >
> > Emissions look at the heads and exterior junk.
> >
> > Mike
> >
> > William Oliveri wrote:
> > >
> > > Do you know what this means? Heavy 258 and Light 258?
> > >
> > > What would really help is to totally exclude 1990 year engines. I need
> to
> > > find out what the date code stamp is for a 1990 258.
> > >
> > > My situation is a little different. The previous owner had the short
> block
> > > replaced due to him pouring water on a over heated engine. I have all
> the
> > > receipts. He had the head serviced for over 1000.00 and replaced the
> short
> > > block with a used one for over 2000.00.
> > >
> > > This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an
> > > 80 year block that would be very bad. Not to consider the smog logs
> require
> > > a newer or same year engine to be replaced.
> > >
> > > I know I have 1/2" head bolts and not 7/16" but that doesn't help either
> > > because 80 and 90 year blocks have 1/2" head bolts.
> > >
> > > Bill
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:403A0568.3A46B309@sympatico.ca...
> > > > They warned about that on the first link Bill.
> > > >
> > > > Some of the numbers went on when it was made and some went on for the
> > > > actual model year it was sold as or built for.
> > > >
> > > > Here is a quote:
> > > >
> > > > An important thing to remember about AMC engines is that changes were
> > > > made on a calendar year basis, not model year. The engine plant ran on
> > > > its own schedule! This is why some 1980 model vehicles have the
> "heavy"
> > > > 258 and others the "light" 258 -- changes were made early in calendar
> > > > year 1980.
> > > >
> > > > Mike
> > > >
> > > > William Oliveri wrote:
> > > > >
> > > > > I stand corrected. C does not stand for carb and it does say the
> dates
> > > run
> > > > > to 89.
> > > > >
> > > > > C- 258 2 bbl (4.2L, 76-89)
> > > > >
> > > > > However, every site I've looked at similar to this one:
> > > > >
> > > > > http://remanufactured.com/AMC_Jeep_Engines.htm
> > > > >
> > > > > says that the serial number of 3235444 started in 81, not 80 which
> is
> > > why
> > > > > it's confusing.
> > > > >
> > > > > Go to this site http://remanufactured.com/AMC_Jeep_Engines.htm and
> > > search
> > > > > for 3235444 and you'll see what I mean.
> > > > >
> > > > > Bill
> > > > >
> > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > news:40393CF5.CF54368C@sympatico.ca...
> > > > > > You are the one that posted the freaking link Bill!
> > > > > >
> > > > > > Did you not read it?
> > > > > >
> > > > > > I did.
> > > > > >
> > > > > > And no 'C' does 'not' stand for carb.
> > > > > >
> > > > > > Mike
> > > > > >
> > > > > > William Oliveri wrote:
> > > > > > >
> > > > > > > Cannot be. The block casting "444" was not used in 1980. C
> does
> > > stand
> > > > > for
> > > > > > > carb though.
> > > > > > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > > > > > news:4038C045.67935D51@sympatico.ca...
> > > > > > > > Umm... Bill yours is a 76-89 258 2bbl carb engine....
> > > > > > > >
> > > > > > > > That is what the 'C' means.
> > > > > > > >
> > > > > > > > The '0' means 1980.
> > > > > > > >
> > > > > > > > Mike
> > > > > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > > > > > > > 88 Cherokee 235 BFG AT's
> > > > > > > >
> > > > > > > > William Oliveri wrote:
> > > > > > > > >
> > > > > > > > > Ok, this is what I found out in case anyone is interested.
> > > > > > > > >
> > > > > > > > > There are two main codes on a block that can help identify a
> > > 4.2L
> > > > > engine
> > > > > > > > >
> > > > > > > > > 1st. ENGINE DAY BUILD CODE. This is located on the
> passenger
> > > side
> > > > > of
> > > > > > > the
> > > > > > > > > block just below and between #3 and #2 spark plugs holes.
> It's
> > > a
> > > > > flat
> > > > > > > plate
> > > > > > > > > and has this format:
> > > > > > > > >
> > > > > > > > > The Engine Day Build Code consists of six characters:
> > > > > > > > >
> > > > > > > > > 1. Year built code
> > > > > > > > > 2 & 3. Number of the month
> > > > > > > > > 4. Engine size/type code
> > > > > > > > > 5 & 6. Day built
> > > > > > > > >
> > > > > > > > > Mine is 012C05
> > > > > > > > >
> > > > > > > > > Which comes out to:
> > > > > > > > >
> > > > > > > > > 0=1980 or 1990
> > > > > > > > > 12=Dec
> > > > > > > > > C=2v carb
> > > > > > > > > 05=day of the month built
> > > > > > > > >
> > > > > > > > > See this site for more info:
> > > > > > > > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > > > > > > > >
> > > > > > > > > I was unclear on whether this would be a 1980 or 1990
> engine.
> > > To
> > > > > > > narrow
> > > > > > > > > it down I located the Engine Serial number (2nd main code)
> which
> > > is
> > > > > > > located
> > > > > > > > > right behind the O2 Sensor on the Drivers side of the block.
> > > > > > > > >
> > > > > > > > > Mine reads: EF3235444
> > > > > > > > >
> > > > > > > > > When I looked for this number on remanufactured engine
> sites I
> > > see
> > > > > > > that
> > > > > > > > > this block serial number started in 1981 through 1990.
> > > > > > > > >
> > > > > > > > > Therefore the best determination I can make is this engine
> is
> > > a
> > > > > 1990
> > > > > > > made
> > > > > > > > > engine.
> > > > > > > > >
> > > > > > > > > Hope this helps someone.
> > > > > > > > >
> > > > > > > > > Bill
02-23-2004, 02:34 PM
#35
Guest
Posts: n/a
Re: Identifying your 4.2L engine
On Mon, 23 Feb 2004, William Oliveri wrote:
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
02-23-2004, 02:34 PM
#36
Guest
Posts: n/a
Re: Identifying your 4.2L engine
On Mon, 23 Feb 2004, William Oliveri wrote:
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
02-23-2004, 02:34 PM
#37
Guest
Posts: n/a
Re: Identifying your 4.2L engine
On Mon, 23 Feb 2004, William Oliveri wrote:
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
> My situation is a little different. The previous owner had the short
> block
There's no "short" version of the AMC 258.
> replaced due to him pouring water on a over heated engine. I have all
> the receipts. He had the head serviced for over 1000.00 and replaced
> the short block with a used one for over 2000.00.
A grand for the head, eh? I just looked at my checkbook: $187.09US to
have my 258 head hot-tanked, the valves ground and new seals installed at
a local speed shop. While it was there they made a pass through the
planer just to be sure it wasn't warped and backed out a broken stud for
me.
Two grand to have a shop R/R an engine doesn't surprise me, though.
> This was in 1997 on a 83 CJ7. If the shop replaced the short block with
> an 80 year block that would be very bad. Not to consider the smog logs
> require a newer or same year engine to be replaced.
It goes by smog system, not individual parts, no?
02-23-2004, 03:08 PM
#38
Guest
Posts: n/a
Re: Identifying your 4.2L engine
I have a 1990 258 (now with a Weber carb.). Is there anyway I can lookup
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>
02-23-2004, 03:08 PM
#39
Guest
Posts: n/a
Re: Identifying your 4.2L engine
I have a 1990 258 (now with a Weber carb.). Is there anyway I can lookup
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>
02-23-2004, 03:08 PM
#40
Guest
Posts: n/a
Re: Identifying your 4.2L engine
I have a 1990 258 (now with a Weber carb.). Is there anyway I can lookup
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>
some info. for you guys to solve this mystery?
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c18lrv$1g1r7h$1@ID-193866.news.uni-berlin.de...
> Ok, this is what I found out in case anyone is interested.
>
> There are two main codes on a block that can help identify a 4.2L engine
>
> 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of the
> block just below and between #3 and #2 spark plugs holes. It's a flat
plate
> and has this format:
>
> The Engine Day Build Code consists of six characters:
>
> 1. Year built code
> 2 & 3. Number of the month
> 4. Engine size/type code
> 5 & 6. Day built
>
> Mine is 012C05
>
> Which comes out to:
>
> 0=1980 or 1990
> 12=Dec
> C=2v carb
> 05=day of the month built
>
> See this site for more info:
> http://home.att.net/~farna/amtech/amcengcodes.htm
>
> I was unclear on whether this would be a 1980 or 1990 engine. To narrow
> it down I located the Engine Serial number (2nd main code) which is
located
> right behind the O2 Sensor on the Drivers side of the block.
>
> Mine reads: EF3235444
>
> When I looked for this number on remanufactured engine sites I see that
> this block serial number started in 1981 through 1990.
>
> Therefore the best determination I can make is this engine is a 1990
made
> engine.
>
>
> Hope this helps someone.
>
> Bill
>
>
>
>
>