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Would a 5.7l 12v Cummins fit in a yj??? #978737 01/01/10 03:45 AM
Joined: Jan 2007
Posts: 26
pickemuptruck16 Offline OP
Getting the Wheeling Fever
So I am wondering if a 12v cummins out of an early 90's dodge fit inside my 91 yj? Or would the mods be too extensive?


'91 YJ 2.5l, 5spd, lifted, 32's, and all of that other crap us rednecks put on our rigs
Re: Would a 5.7l 12v Cummins fit in a yj??? [Re: pickemuptruck16] #978738 01/01/10 05:02 PM
Joined: Feb 2000
Posts: 6,247
4x4Wire Offline
Trail Leader
***
I think you would find it a very tight fit. And, the transmission would be rather long for the YJ wheelbase.


John Stewart
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Re: Would a 5.7l 12v Cummins fit in a yj??? [Re: pickemuptruck16] #978739 01/01/10 11:23 PM
Joined: May 2009
Posts: 306
M
MartySoCal Offline
Mudrunner
*****
The weight would be an issue, too. A 4 cylinder Cummins might be better fit, but it would still be almost twice the weight of a 4.0l!

Re: Would a 5.7l 12v Cummins fit in a yj??? [Re: MartySoCal] #978740 01/02/10 02:08 AM
Joined: Jan 2007
Posts: 26
pickemuptruck16 Offline OP
Getting the Wheeling Fever
Yeah as soon as I was done posting this I did some research and I think I'm going to go with a 4bt or 4bta with an NV4500 and full width dana 44s front and rear. Any random things I should know or advice on surprises that arise when doing these swaps?


'91 YJ 2.5l, 5spd, lifted, 32's, and all of that other crap us rednecks put on our rigs
Re: Would a 5.7l 12v Cummins fit in a yj??? [Re: pickemuptruck16] #978741 01/02/10 02:12 PM
Joined: May 2009
Posts: 306
M
MartySoCal Offline
Mudrunner
*****
Just make sure it's smog legal in your state before you do it, it's not in CA.

Re: Would a 5.7l 12v Cummins fit in a yj??? [Re: MartySoCal] #978742 01/02/10 07:04 PM
Joined: Jan 2008
Posts: 985
1
1986powerram50 Offline
Rock Warrior
*****
Best of luck finding a 4bt. I'm looking for one now, they havent made em for anything since irrigation wells since 03 due to EPA regulations.

If you do find one there generally rather expensive. Take a look on ebay, you can find the occoasional deal on there but, I'm not 100% certain I wanna dump 4000 just to get a motor.


--keRby

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