Jump to content

2001 swap into a '89

Recommended Posts

I have a 2001 XJ with 4.0,Auto and 4WD. I originally got it with the intention of swapping everything into a 1989 MJ 4.0, 5sp, 4WD. After wising up to what all was involved I;m just going to swap engines. I'm going to remove all the sensors, everything associated with the HO and replace them with Renix. I believe I will be losing a couple HP doing this but I will still have a fresher engine. Going to keep the AX15 and swap the flywheel,over to the newer engine. Hope I don't have to change manifolds also but will if necessary. Any thing I'm overlooking? Jim



Learn as if your going to live forever. Live as if your going to die tomorrow.

Link to comment
Share on other sites

The 2001 block may not have a boss for the knock sensor. If it does, I don't think it will be tapped for it.


Check the number on the head casting. It was around 2000 that Jeep started using a head that has a reputation for cracking. There was a recent thread here in which someone provided the casting number to watch out for.

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...