Default Engine Build Date Code 

Old 03-16-2011, 10:45 AM   #1
chodette is offline
chodette
Junior Jeeper
Vehicle(s): 1981 CJ-5 Renegade 304/V-8
 
chodette's Avatar
 
Join Date: Feb 2011
Location: Fairfield, CA
Posts: 84
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 10 chodette is on a distinguished road
I need some help with my engine build date code. We were told when my Dad bought me this Jeep that it had the original engine in it. When I bought the TSM, it said the build date code would be on a plate attached to the right cylinder head cover. Was not there....Well, since I got the body off I found the plate on the back of the left head cover and it says "011H11". If it was a 1981 engine it should start with a 5 according to the manual. So does a 0 mean it is a 1976? What a stupid place to put a build code....valve covers get replaced all the time. Is there anywhere else I can pull a number off the engine that will confirm it is a 76 or an 81?

Thanks guys!

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
The Following User Says Thank You to chodette For This Useful Post:
rivergoblin (12-24-2014)


Register for a free membership and remove this add!
Vote for Jeep-CJ.com daily!
Vote for Jeep-CJ.com

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:06 PM   #2
hagar is offline
hagar
Senior Jeeper
Vehicle(s): 47 CJ2A 225V6 SM420 D18 w/Warn overdrive D30 5:38 Power Lok D44 5:38 Flanged Detroit Locker
 
Join Date: May 2010
Location: Riverside CA
Posts: 599
Thanks: 65
Thanked 198 Times in 128 Posts
Rep Power: 10 hagar is on a distinguished road
Well, since there weren't any V8 CJs in California after 1980, we're left with three choices:
the V8 was swapped into the Jeep;
the Jeep is a 49 state CJ;
the Jeep isn't a 1981 model.

But, it's true, the V8 engine codes were on small tags attached to the front of the RH valve cover; so your valve cover has been swapped around.

As for the engine build date, who knows; that valve cover may not be from that V8 engine...

Is there a tag on the carb, assuming it's still the Motorcraft 2BBL ?

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:32 PM   #3
IOPort51 is offline
IOPort51
NOT the voice of reason
Jeep-CJ.com Moderator
Vehicle(s): 1977 cj-5 4.2 W/MC2100 carb, 4.0 head W/3 angle valves,SS Header,TFI ignition with MSB-6 offroad module,CS144 140 amp RPS alternator with remote regulator T-150,d-20,Dana 44 with OX lock and disk brakes. D-30 with Spartin locker, skyjacker 2.5 lift?nitro shocks,31" BFG A/T off road.8000 lb Warn winch, original owner.=^) 2006 Toyota Tacoma
 
IOPort51's Avatar
 
Join Date: Oct 2009
Location: Garland Texas
Age: 66
Posts: 7,652
Images: 424
Thanks: 126
Thanked 634 Times in 543 Posts
Rep Power: 18 IOPort51 is on a distinguished road
I would suggest that perhaps the 0 is a 5 that was stamped off center??
this would make it a 304 that was put together on 11/11/81.
__________________
My friends call me IO, I hope you will too.
We remember the times, when the voice in our head was screaming like a little girl.

you asked for opinions, this one is mine.

That which does not kill us, makes us stronger.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:46 PM   #4
chodette is offline
chodette
Junior Jeeper
Vehicle(s): 1981 CJ-5 Renegade 304/V-8
 
chodette's Avatar
 
Join Date: Feb 2011
Location: Fairfield, CA
Posts: 84
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 10 chodette is on a distinguished road
Hagar-It is not a CA Jeep. I had it shipped here from Arkansas. It is a 49 State model. The Jeep is definately an 81, verified by all the VIN plates. Here is the tag on the carb (1DM2J):


And IO, here is the tag on the valve cover. Doesn't look mis-stamped


So what do you guys think?

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:50 PM   #5
IOPort51 is offline
IOPort51
NOT the voice of reason
Jeep-CJ.com Moderator
Vehicle(s): 1977 cj-5 4.2 W/MC2100 carb, 4.0 head W/3 angle valves,SS Header,TFI ignition with MSB-6 offroad module,CS144 140 amp RPS alternator with remote regulator T-150,d-20,Dana 44 with OX lock and disk brakes. D-30 with Spartin locker, skyjacker 2.5 lift?nitro shocks,31" BFG A/T off road.8000 lb Warn winch, original owner.=^) 2006 Toyota Tacoma
 
IOPort51's Avatar
 
Join Date: Oct 2009
Location: Garland Texas
Age: 66
Posts: 7,652
Images: 424
Thanks: 126
Thanked 634 Times in 543 Posts
Rep Power: 18 IOPort51 is on a distinguished road
your right it does not look like a 5. Oh well, it seemed like a good idea.
__________________
My friends call me IO, I hope you will too.
We remember the times, when the voice in our head was screaming like a little girl.

you asked for opinions, this one is mine.

That which does not kill us, makes us stronger.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:52 PM   #6
chodette is offline
chodette
Junior Jeeper
Vehicle(s): 1981 CJ-5 Renegade 304/V-8
 
chodette's Avatar
 
Join Date: Feb 2011
Location: Fairfield, CA
Posts: 84
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 10 chodette is on a distinguished road
Would the "0" make it a 76....assuming they used an "0"?

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:52 PM   #7
IOPort51 is offline
IOPort51
NOT the voice of reason
Jeep-CJ.com Moderator
Vehicle(s): 1977 cj-5 4.2 W/MC2100 carb, 4.0 head W/3 angle valves,SS Header,TFI ignition with MSB-6 offroad module,CS144 140 amp RPS alternator with remote regulator T-150,d-20,Dana 44 with OX lock and disk brakes. D-30 with Spartin locker, skyjacker 2.5 lift?nitro shocks,31" BFG A/T off road.8000 lb Warn winch, original owner.=^) 2006 Toyota Tacoma
 
IOPort51's Avatar
 
Join Date: Oct 2009
Location: Garland Texas
Age: 66
Posts: 7,652
Images: 424
Thanks: 126
Thanked 634 Times in 543 Posts
Rep Power: 18 IOPort51 is on a distinguished road
does your block have 304 cast into the drivers side over the motor mount??
__________________
My friends call me IO, I hope you will too.
We remember the times, when the voice in our head was screaming like a little girl.

you asked for opinions, this one is mine.

That which does not kill us, makes us stronger.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:54 PM   #8
chodette is offline
chodette
Junior Jeeper
Vehicle(s): 1981 CJ-5 Renegade 304/V-8
 
chodette's Avatar
 
Join Date: Feb 2011
Location: Fairfield, CA
Posts: 84
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 10 chodette is on a distinguished road
Yes....Are there no other numbers on the engine that would help with the year? Ridiculous it was put on a valve cover!

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:55 PM   #9
IOPort51 is offline
IOPort51
NOT the voice of reason
Jeep-CJ.com Moderator
Vehicle(s): 1977 cj-5 4.2 W/MC2100 carb, 4.0 head W/3 angle valves,SS Header,TFI ignition with MSB-6 offroad module,CS144 140 amp RPS alternator with remote regulator T-150,d-20,Dana 44 with OX lock and disk brakes. D-30 with Spartin locker, skyjacker 2.5 lift?nitro shocks,31" BFG A/T off road.8000 lb Warn winch, original owner.=^) 2006 Toyota Tacoma
 
IOPort51's Avatar
 
Join Date: Oct 2009
Location: Garland Texas
Age: 66
Posts: 7,652
Images: 424
Thanks: 126
Thanked 634 Times in 543 Posts
Rep Power: 18 IOPort51 is on a distinguished road
76 was a 9
__________________
My friends call me IO, I hope you will too.
We remember the times, when the voice in our head was screaming like a little girl.

you asked for opinions, this one is mine.

That which does not kill us, makes us stronger.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote

Default Re: Engine Build Date Code 

Old 03-16-2011, 07:57 PM   #10
chodette is offline
chodette
Junior Jeeper
Vehicle(s): 1981 CJ-5 Renegade 304/V-8
 
chodette's Avatar
 
Join Date: Feb 2011
Location: Fairfield, CA
Posts: 84
Thanks: 5
Thanked 3 Times in 3 Posts
Rep Power: 10 chodette is on a distinguished road
So what was an 0? UGHHH! I need to figure out the year so I can get the right emission parts.

 

Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!Stumble this Post!
Reply With Quote
Reply

Bookmarks

Tags
build , code , date , engine


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine Build - Take #2 certifiablejeep CJ Build Forum 11 11-04-2013 05:00 PM
Engine Code Question thiswontbetooexpensive Drivetrain 7 11-30-2012 03:11 PM
engine build question jeepboy45 Drivetrain 8 09-03-2012 08:54 AM
Engine build Ironmerganser Drivetrain 13 07-28-2011 04:20 PM
360 mild engine build buechecj7 Drivetrain 3 06-29-2010 12:15 AM


Vote for Jeep-CJ.com