xj_maniac_newb

It might until you upgrade the tire size and dump the clutch one good time. Now a stock 4bt is a different story.

hawaiian808

yup you will, and a built d30 and maybe even stock 8.25 will support it, if your trying to run 35+ tires and all that jazz might as well look for a d60 haha

Greybush

well i been doing A LOT of research and on the 4btswap forum i found a 4bt xj swap and it pretty much showed how to reinforce the unibody to support the weight and be able to with stand the torque i havent read all of it yet but from the looks of this forum it pretty much breaks down the whole swap also when i start the swap im going to make a video of how i did it so for future xj swappers they wont have to go through as much hassle to find info on it but thats at a future date and ill add the link on here.

eastonarcher1993

Would def wanna see this

acem

Instead of swaping out the dash why not use the original xj sending units installed on the 4bt? They are both chrysler products so they might even be the same sending untis anyway. I doubt you could get the tach to work but the others should be doable.

Use an early auto trans (727) and you should be an easy fit to the np231. It is only a 3 speed auto but works well and does not use a computer.

I would hope you can get 30mpg. My 1ton dodge 6bt gets 22mpg if you drive it easy.

Thx-Ace

jeep19xj91

A very large amount of bread trucks ran a 4bt paired to a gm turbo 400. If you get a engine from a bread truck you could easily run a trans and t case from a 70s chevy pickup.

jeep19xj91

not to mention that would also more than likely have the new process 205 case which is much stronger than the 231 and you would not need to do an sye since it comes with a fixed yoke

xj_maniac_newb

never said the xj unibody wouldnt support it. People underestimate the xj unibody when in all reality it is just as strong or stronger than some framed vehicles. for example, Ive hit 3 cars in my jeep in the same spot and the only thing tweeked is my fender. hit one car in my toyota and bent the frame just enough to **** me off

mcoughlin

All the older chevy trucks had their front differentials on the passenger side so you would have to flip the transfer case to get it to work. I wonder if some place like Advanced Adapters could make everything to bolt he stock t case to whatever trans you use??

Cherockee

Just wondering, have you contacted these guys yet? Seems like they've already done all the research you need to put a 4bt into a jeep.
http://www.jdjeeps.com/

caged

a guy i know does these conversions too.

you can email greg for any questions.

http://www.overlanddiesel.com/Home.html

Greybush

yea i looked into these guys and asked for some advice and havenot heard anything back yet

Greybush

heres pictures of the frankenstein xj

Cherockee

Here's an XJ from their customer's project link:
http://www.jdjeeps.com/images2/diese...s/XJ/index.htm

As for being over priced, I couldn't say. It sure seems like it would be a better value for people who don't want to spend the time or moeny to figure it out on their own and would rather draw upon someone else's professional experience. Just sayin' ...

Greybush

so i been looking for a 4bt back home i dont want a new one or rebuilt one i was looking for one that needed to be rebuilt and there was no luck but i ran across my buddy who has a 97 dakota with the 3.9 v6 so im debating if im going to put that in or just put the stock 4.0 back in it and stroker it out give me you guys thoughts on this either way i ccan get both engines cheap and i still have to redo my powertran due to being a 2wd so cant add those in im going for performance in the long run im kind of leaning towards the 4.0 stroked out get back at me let me know what you guys think thanks