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Unread 03-05-2013, 10:54 AM   #1
cdt540
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1983 CJ7 
 
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Need help identifying Carb

I just purchased a complete 258 engine with carb with a build date of May 30, 1982 (205C30). I was told it came out of an '83 CJ7. I have an '83 CJ7 but it has a different carb which I believe is stock, a Carter 2 bbl BDD. So I am trying to determine model of this carb, is it stock to this engine and if not what era is it from? All I know for sure is that it is a Carter. Any help would be greatly appreciated...

Chris
'83 CJ7 (258 4spd)
Austin Tx

photo6.jpg   photo7.jpg  
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Unread 03-05-2013, 11:08 AM   #2
86cj74.2L
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That's a non-feedback BBD.


Your 83 I'm thinking should have had a stepper BBD. I'm a little fuzzy on when the feedback carb was used on non California CJ's 83 or 84.
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Unread 03-05-2013, 11:10 AM   #3
waterdowg
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Its a Carter Pre-computer. So its from 82 or older as for the model. I can't read it but its stamped on the right corner side of your second picture. It looks like 2382?
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Unread 03-05-2013, 01:29 PM   #4
cdt540
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Check at lunch, the number is 6-2362. I bought the engine out of a running CJ for $100 from a guy who was doing a V-8 swap because mine is shot and not rebuildable. Supposedly the carb has been recently rebuilt. I have done the nutter bypass on mine so after the new (82?) engine is rebuilt is should be a pretty straight forward install right? I was trying to determine what to retain from my original 83 for use on the '82 but sounds like it is cleaner all the way around to just drop in the 82 intacked (no EGR, Cannister,etc.)?
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Unread 03-05-2013, 02:03 PM   #5
86cj74.2L
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I'd leave the EGR and canister.
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Unread 03-05-2013, 02:10 PM   #6
cdt540
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So your saying use the intake manifold off the 83 because there is no provision on the 82 manifold for the egr, cannister etc. as best I can tell? I will need to double check but I believe the EGR on the 83 has already been disabled although I know the cannister is in good working order.
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Unread 03-05-2013, 02:16 PM   #7
MoC
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Carter YF
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Unread 03-05-2013, 03:41 PM   #8
86cj74.2L
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Is the manifold aluminum or iron on the engine you bought?
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Unread 03-05-2013, 04:22 PM   #9
cdt540
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I will have to check but I am pretty sure it is iron because it looks like it was painted the same color as the engine. After further googling I believe it is a Carter BBD 2 bbl without the stepper. Also, spoke with the PO and he said it came out of AT Quadratrac which may come with a different carb config than the more typical MT Jeep. If you can't tell I am a Jeep newbie but half the fun with these older "projects" is doing all the research and figuring all this out.
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Unread 03-05-2013, 04:52 PM   #10
Matt1981CJ7
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Quote:
Originally Posted by cdt540 View Post
So your saying use the intake manifold off the 83 because there is no provision on the 82 manifold for the egr, cannister etc. as best I can tell? I will need to double check but I believe the EGR on the 83 has already been disabled although I know the cannister is in good working order.
A 1982 AMC 258 had both EGR and charcoal canister. If the existing manifold doesn't have provisions for EGR, then it's not factory. It probably also originally had an air pump, but unless your CJ has required emissions, that's probably long gone.

The only "provisions" for the canister should be a CTO located on the manifold below and slightly forward of the drivers side of the carb.

Hope this helps,

Matt
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Unread 03-06-2013, 02:59 AM   #11
John Strenk
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Quote:
Originally Posted by 86cj74.2L View Post
Is the manifold aluminum or iron on the engine you bought?
This is important if you are going to swap intakes as the aluminum and iron manifolds have different exhaust manifolds as well.

Also the iron manifold is not water heated so the CTo's are in the block.

The difference between an AT carb and a MAN carb are so slight, you would not be able to tell a difference.
Just slap that carb on your old manifold.
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Unread 03-06-2013, 07:49 AM   #12
cdt540
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The manifold is definitely iron not aluminum. My thought at this time is to get the 82 rebuilt and install it the way it came, manifolds, carb, etc. Then just re-plumb the vacuum/PVC/tank vent to the cannister and be done. It appears that at some point in its past someone removed the air pump, EGR, cannister so other than the cannister I will just leave that as it is. My cannister is one of my prized posssesions! When I first got the CJ I busted a nipple off the original cannister so I started scrounging for another used one. I replied to CL post and low and behold not only did he have one it was OEM brand new still in the box and I think I paid $25 or $30.
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Unread 03-06-2013, 08:33 AM   #13
Matt1981CJ7
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You'll be happy you chose to use the canister. So will your friends and family, when you and your garage don't stink like fuel all the time.

I think you have a good plan going for the rebuild. Without the EGR and Air pump, your vac system will consist of the PCV, canister, and vac advance, which will be a very simple layout. I'd recommend using the factory breather with the TAC system, which would add another vac component to your system, but that's not overly complicated, either.

Good luck, and keep us informed.

Matt
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