Jump to content

Rebuild Questions

Recommended Posts

Semi–noob here. So I have a couple of questions? I have a 1990 Comanche base and a 1988 comanche base. Both have the 2.5L with a AX–5 tranny. From my understanding the MJ is the trucks and the XJ is the Cherokee or Wrangler, is that correct? And if I want to do a simple bolt on 2wd–4wd swap I have to keep the donor being a 2.5L with a AX–4. What years and models should I be looking for exactly for the easiest conversions?

Link to comment
Share on other sites

MJ = Comanche 86 to 92

XJ = Cherokee 84 to 01

YJ = Wrangler 87 to 95


The MJ and XJ are ALMOST identical from the front seats forward. The 4wd parts from any comparably equipped MJ/XJ will bolt right in. The front drive shaft is the same. The rear DS is longer for the MJ, whether it's SWB or LWB.


I believe there are differences with the YJ setup but I am not sure of them.

Link to comment
Share on other sites

Gotcha! I noticed slot of the newer Cherokees such as the Laredos are V–6. How would this play in to the transmission swaps?

The V6 2.8 was in early XJ and MJ - 84-86. The I6 4.0 was used from 87-06 in jeeps. After 06, jeep installed V6 3.8.


The XJ ended in 01. The Grand Cherokee (ZJ & WJ) started in 93. The WJ would have the V6.


If you found an early XJ with a V6 2.8 just RUN AWAY!


I don't think the bolt patterns for V6s mate up with the 4.0 matched trans.

Link to comment
Share on other sites

You could also just piece together the parts needed. That might be a little cheaper for you then buying a donor vehicle. Just make sure the front axle has the same gears as your rear. The AX4 transmission is a 4 speed, I would recommend staying with a AX5 which did come in the 2.5 and 2.8 Cherokees and Comanches. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...