Pirate 4x4 banner
1 - 1 of 3 Posts

· Registered
1,201 Posts
Discussion Starter · #1 ·
OK, first off, I have searched (or atleast tried. kept coming up page unavailable or some crap). I have also read some articles online, including http://www.off-road.com/jeep/tech/4lswap/index.html. Nothing seems to help me on my dilemma. So here goes.

I have a 1990 YJ w/ 4 banger, ax-5, 231, stock axles with 4.88 and 33's. I am getting (for free-ish) a 4.0, ax-15, 231 combo out of a 1996 XJ. At least I am told it is a 1996, I will check the block numbers when it arrives.

I know that there are OBD I and OBD II, and I have no idea what I have or what I am getting. So there is question 1. Do I have OBD I, and am I getting and OBD I or II.

I am going to pull the entire front end sheetmetal and pull the whole pig all at once. Then pull what I need to (motor, tranny, t-case).
Question 2: What do I need to leave in for wiring. The motor has most all of the wiring, minus computer (I know I have to get that, but waiting to see what year model it is out of.)

Am I going to have problems with fuel delivery with my current TBI fuel pump?
If so, what do I need to do.

I just had a new radiator put in, but will I have overheating problems with it? It is supposed to be a "heavy-duty" radiator. Do not know for sure.

Does anyone make a bolt in engine mount kit that bolts directly to my current mounts?

I know that I have to have new DS's made, no big deal. May just have mine retubed. I will also be upgrading to SYE, ford 8.8, body lift, and "tummy tuck" (For lack of better words. I know that is not necassarily needed, but thought I would give you enough info on how I plan on the build of the Jeep.)

Give me your thoughts, and sorry for the repost. I am sure this has been done thousands of times, and asked just as many, but I could not find anything on this with my searching that I have done.

Thanks again everybody. If you find any links that would be of help, or feel this should be in "newb", let me know.

Again, thanks.
1 - 1 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.