Identifying your 4.2L engine
02-23-2004, 04:10 PM
#41
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Yeah, that'd be great. Look on the passenger side of the engine just below
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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$1@ID-193866.news.uni-berlin.de...
> > Ok, this is what I found out in case anyone is interested.
> >
> > There are two main codes on a block that can help identify a 4.2L engine
> >
> > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
the
> > block just below and between #3 and #2 spark plugs holes. It's a flat
> plate
> > and has this format:
> >
> > The Engine Day Build Code consists of six characters:
> >
> > 1. Year built code
> > 2 & 3. Number of the month
> > 4. Engine size/type code
> > 5 & 6. Day built
> >
> > Mine is 012C05
> >
> > Which comes out to:
> >
> > 0=1980 or 1990
> > 12=Dec
> > C=2v carb
> > 05=day of the month built
> >
> > See this site for more info:
> > http://home.att.net/~farna/amtech/amcengcodes.htm
> >
> > I was unclear on whether this would be a 1980 or 1990 engine. To
narrow
> > it down I located the Engine Serial number (2nd main code) which is
> located
> > right behind the O2 Sensor on the Drivers side of the block.
> >
> > Mine reads: EF3235444
> >
> > When I looked for this number on remanufactured engine sites I see
that
> > this block serial number started in 1981 through 1990.
> >
> > Therefore the best determination I can make is this engine is a 1990
> made
> > engine.
> >
> >
> > Hope this helps someone.
> >
> > Bill
> >
> >
> >
> >
> >
>
>
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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$1@ID-193866.news.uni-berlin.de...
> > Ok, this is what I found out in case anyone is interested.
> >
> > There are two main codes on a block that can help identify a 4.2L engine
> >
> > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
the
> > block just below and between #3 and #2 spark plugs holes. It's a flat
> plate
> > and has this format:
> >
> > The Engine Day Build Code consists of six characters:
> >
> > 1. Year built code
> > 2 & 3. Number of the month
> > 4. Engine size/type code
> > 5 & 6. Day built
> >
> > Mine is 012C05
> >
> > Which comes out to:
> >
> > 0=1980 or 1990
> > 12=Dec
> > C=2v carb
> > 05=day of the month built
> >
> > See this site for more info:
> > http://home.att.net/~farna/amtech/amcengcodes.htm
> >
> > I was unclear on whether this would be a 1980 or 1990 engine. To
narrow
> > it down I located the Engine Serial number (2nd main code) which is
> located
> > right behind the O2 Sensor on the Drivers side of the block.
> >
> > Mine reads: EF3235444
> >
> > When I looked for this number on remanufactured engine sites I see
that
> > this block serial number started in 1981 through 1990.
> >
> > Therefore the best determination I can make is this engine is a 1990
> made
> > engine.
> >
> >
> > Hope this helps someone.
> >
> > Bill
> >
> >
> >
> >
> >
>
>
02-23-2004, 04:10 PM
#42
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Yeah, that'd be great. Look on the passenger side of the engine just below
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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$1@ID-193866.news.uni-berlin.de...
> > Ok, this is what I found out in case anyone is interested.
> >
> > There are two main codes on a block that can help identify a 4.2L engine
> >
> > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
the
> > block just below and between #3 and #2 spark plugs holes. It's a flat
> plate
> > and has this format:
> >
> > The Engine Day Build Code consists of six characters:
> >
> > 1. Year built code
> > 2 & 3. Number of the month
> > 4. Engine size/type code
> > 5 & 6. Day built
> >
> > Mine is 012C05
> >
> > Which comes out to:
> >
> > 0=1980 or 1990
> > 12=Dec
> > C=2v carb
> > 05=day of the month built
> >
> > See this site for more info:
> > http://home.att.net/~farna/amtech/amcengcodes.htm
> >
> > I was unclear on whether this would be a 1980 or 1990 engine. To
narrow
> > it down I located the Engine Serial number (2nd main code) which is
> located
> > right behind the O2 Sensor on the Drivers side of the block.
> >
> > Mine reads: EF3235444
> >
> > When I looked for this number on remanufactured engine sites I see
that
> > this block serial number started in 1981 through 1990.
> >
> > Therefore the best determination I can make is this engine is a 1990
> made
> > engine.
> >
> >
> > Hope this helps someone.
> >
> > Bill
> >
> >
> >
> >
> >
>
>
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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$1@ID-193866.news.uni-berlin.de...
> > Ok, this is what I found out in case anyone is interested.
> >
> > There are two main codes on a block that can help identify a 4.2L engine
> >
> > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
the
> > block just below and between #3 and #2 spark plugs holes. It's a flat
> plate
> > and has this format:
> >
> > The Engine Day Build Code consists of six characters:
> >
> > 1. Year built code
> > 2 & 3. Number of the month
> > 4. Engine size/type code
> > 5 & 6. Day built
> >
> > Mine is 012C05
> >
> > Which comes out to:
> >
> > 0=1980 or 1990
> > 12=Dec
> > C=2v carb
> > 05=day of the month built
> >
> > See this site for more info:
> > http://home.att.net/~farna/amtech/amcengcodes.htm
> >
> > I was unclear on whether this would be a 1980 or 1990 engine. To
narrow
> > it down I located the Engine Serial number (2nd main code) which is
> located
> > right behind the O2 Sensor on the Drivers side of the block.
> >
> > Mine reads: EF3235444
> >
> > When I looked for this number on remanufactured engine sites I see
that
> > this block serial number started in 1981 through 1990.
> >
> > Therefore the best determination I can make is this engine is a 1990
> made
> > engine.
> >
> >
> > Hope this helps someone.
> >
> > Bill
> >
> >
> >
> >
> >
>
>
02-23-2004, 04:10 PM
#43
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Yeah, that'd be great. Look on the passenger side of the engine just below
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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$1@ID-193866.news.uni-berlin.de...
> > Ok, this is what I found out in case anyone is interested.
> >
> > There are two main codes on a block that can help identify a 4.2L engine
> >
> > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
the
> > block just below and between #3 and #2 spark plugs holes. It's a flat
> plate
> > and has this format:
> >
> > The Engine Day Build Code consists of six characters:
> >
> > 1. Year built code
> > 2 & 3. Number of the month
> > 4. Engine size/type code
> > 5 & 6. Day built
> >
> > Mine is 012C05
> >
> > Which comes out to:
> >
> > 0=1980 or 1990
> > 12=Dec
> > C=2v carb
> > 05=day of the month built
> >
> > See this site for more info:
> > http://home.att.net/~farna/amtech/amcengcodes.htm
> >
> > I was unclear on whether this would be a 1980 or 1990 engine. To
narrow
> > it down I located the Engine Serial number (2nd main code) which is
> located
> > right behind the O2 Sensor on the Drivers side of the block.
> >
> > Mine reads: EF3235444
> >
> > When I looked for this number on remanufactured engine sites I see
that
> > this block serial number started in 1981 through 1990.
> >
> > Therefore the best determination I can make is this engine is a 1990
> made
> > engine.
> >
> >
> > Hope this helps someone.
> >
> > Bill
> >
> >
> >
> >
> >
>
>
the #3 and #2 spark plug holes on the block. There should be a flat plate
there with some numbers and letters on it.
What does it say?
Thanks,
Bill
"KJ" <here@there.net> wrote in message
news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> 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
> >
> >
> >
> >
> >
>
>
02-23-2004, 04:18 PM
#44
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Correct me if I'm wrong but the term "short block" is referring to the
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
02-23-2004, 04:18 PM
#45
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Correct me if I'm wrong but the term "short block" is referring to the
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
02-23-2004, 04:18 PM
#46
Guest
Posts: n/a
Re: Identifying your 4.2L engine
Correct me if I'm wrong but the term "short block" is referring to the
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
engine without the head. "Long Block" would be referring to the engine with
the head.
I'll scan the receipts in tomorrow up to my web page for reference. He also
had the carb rebuilt by Chrysler which was also big bucks.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:Pine.NEB.4.58.0402231422060.6938@panix3.panix .com...
> 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?
>
>
>
02-23-2004, 05:38 PM
#47
Guest
Posts: n/a
Re: Identifying your 4.2L engine
063CL06
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
02-23-2004, 05:38 PM
#48
Guest
Posts: n/a
Re: Identifying your 4.2L engine
063CL06
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
02-23-2004, 05:38 PM
#49
Guest
Posts: n/a
Re: Identifying your 4.2L engine
063CL06
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)", but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters it's an 1989....I'll normally get the parts right that way since if I tell them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
02-24-2004, 12:06 AM
#50
Guest
Posts: n/a
Re: Identifying your 4.2L engine
This number is in a different format than the web site states. Looks like
the format changes in 1990 otherwise your number would be:
Year 1990
Month 63
Day Built 06
Doesn't fit the following format:
1. Year built code
2 & 3. Number of the month
4. Engine size/type code
5 & 6. Day built
However, this information does confirm Mike's position which is now very
clear.
It could be that the day code letters are two letter codes rather than the
single letter codes the CJs have but that's just guessing.
Bill
"KJ" <here@there.net> wrote in message
news:lhv_b.110535$B81.642696@twister.tampabay.rr.c om...
063CL06
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)",
but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website
info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters
it's an 1989....I'll normally get the parts right that way since if I tell
them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just
below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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$1@ID-193866.news.uni-berlin.de...
> > > Ok, this is what I found out in case anyone is interested.
> > >
> > > There are two main codes on a block that can help identify a 4.2L
engine
> > >
> > > 1st. ENGINE DAY BUILD CODE. This is located on the passenger side of
> the
> > > block just below and between #3 and #2 spark plugs holes. It's a flat
> > plate
> > > and has this format:
> > >
> > > The Engine Day Build Code consists of six characters:
> > >
> > > 1. Year built code
> > > 2 & 3. Number of the month
> > > 4. Engine size/type code
> > > 5 & 6. Day built
> > >
> > > Mine is 012C05
> > >
> > > Which comes out to:
> > >
> > > 0=1980 or 1990
> > > 12=Dec
> > > C=2v carb
> > > 05=day of the month built
> > >
> > > See this site for more info:
> > > http://home.att.net/~farna/amtech/amcengcodes.htm
> > >
> > > I was unclear on whether this would be a 1980 or 1990 engine. To
> narrow
> > > it down I located the Engine Serial number (2nd main code) which is
> > located
> > > right behind the O2 Sensor on the Drivers side of the block.
> > >
> > > Mine reads: EF3235444
> > >
> > > When I looked for this number on remanufactured engine sites I see
> that
> > > this block serial number started in 1981 through 1990.
> > >
> > > Therefore the best determination I can make is this engine is a 1990
> > made
> > > engine.
> > >
> > >
> > > Hope this helps someone.
> > >
> > > Bill
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>
the format changes in 1990 otherwise your number would be:
Year 1990
Month 63
Day Built 06
Doesn't fit the following format:
1. Year built code
2 & 3. Number of the month
4. Engine size/type code
5 & 6. Day built
However, this information does confirm Mike's position which is now very
clear.
It could be that the day code letters are two letter codes rather than the
single letter codes the CJs have but that's just guessing.
Bill
"KJ" <here@there.net> wrote in message
news:lhv_b.110535$B81.642696@twister.tampabay.rr.c om...
063CL06
1990 Jeep Wranger YJ w/ 258
So, 1990 year model w/ a 1986 block?
The C is close enough in stating that it is a "C- 258 2 bbl (4.2L, 76-89)",
but the "L" baffles me.
Anyone have a clue as to the "L" portion of the designation? The website
info. for the "L" doesn't make sense in this case.
When ordering parts, I usually tell the parts flunkies behind the counters
it's an 1989....I'll normally get the parts right that way since if I tell
them it's a 1990, they screw up more often.
"William Oliveri" <wuji@bigvalley.net> wrote in message
news:c1dq5v$1hmf4l$1@ID-193866.news.uni-berlin.de...
> Yeah, that'd be great. Look on the passenger side of the engine just
below
> the #3 and #2 spark plug holes on the block. There should be a flat plate
> there with some numbers and letters on it.
>
> What does it say?
>
> Thanks,
>
> Bill
>
> "KJ" <here@there.net> wrote in message
> news:t5t_b.110498$B81.629288@twister.tampabay.rr.c om...
> > 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
> > >
> > >
> > >
> > >
> > >
> >
> >
>
>
>