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 |
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 |
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 |
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 |
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? |
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? |
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? |
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 > > > > > |
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 > > > > > |
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 > > > > > |
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