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Jeep YJ 4BT Cummins build!!

106K views 218 replies 62 participants last post by  theend2008 
#1 ·
hey guys thought i'd jump on jeepfourm and show y'all my yj build.im new to this site so bare with me.ive got a 1988 jeep yj it was 100% stock when i bought it at age 16.ive been slowly buying things for it,my plans are to drop a cummins 3.9l 4bt into it.so ill post some pictures of my build and how im going to do it.feel free to comment and give suggestions along the way :cheers2:
 
#8 ·
I don't have picture of my axles yet but,I've got Dana 44 front and rear out of a 88 waggy from ebay for 300.the rear has limited slip diff I'm going to be putting either 4.88 gears or 4.56.the front I'm thinking of a lunch box locker.I'm going to be springing over the axles myself.
 
#24 ·
Made some spring perches for the rear Dana 44,my tape measure looked like 3" and every one online said that the diameter was 3".after finishing one I realized it was to big!!! So I got the verniers out and its not 3" its 2 3/4".oh well my fault for not double checking.I just went ahead and ordered some from ebay should be in next week.

Hand tool Tool Bicycle part Wrench Calipers
 
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