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Re: Identifying your 4.2L engine
On Sun, 22 Feb 2004, William Oliveri wrote:
> 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. Do you have a plastic valve cover? |
Re: Identifying your 4.2L engine
On Sun, 22 Feb 2004, William Oliveri wrote:
> 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. Do you have a plastic valve cover? |
Re: Identifying your 4.2L engine
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
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
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
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
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
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
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
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 |
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