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1-6 of 7 Results
  1. TJ Technical Discussion
    I have an 89 YJ with the 2.5/5 speed. For a while now I've been thinking about doing a 4.0 conversion. It just seems that 4.0 YJs are almost nonexistent around here. There's a place a little ways from me that specializes in Jeep parts. I talked to them a week or two ago and he said the only 4.0...
  2. YJ Technical Discussion
    Here's the deal....I've got an 87 YJ with some motor problems. While trying to troubleshoot and get it fixed, I stumbled upon a 04 WJ that I can pick up for FREE. I need to know if this will be compatible with my YJ. Here's the vehicle specs: 1987 Jeep Wrangler 4X4: 4.2L I6 T999 Automatic...
  3. YJ Technical Discussion
    I'm considering a possible Cherokee 4.0/AW4 conversion into my 2.5 89 YJ and I'm trying to figure out as much as I can before I decide if I want to go through with it or not, mainly the wiring. Will an engine harness and computer from a 4.0 YJ work on a Cherokee 4.0? Then all I would have to do...
  4. YJ Technical Discussion
    Hello everyone. I've been reading on these very helpful forums for a while now and finally decided to join. I have a 1989 YJ with the very weak 2.5 and have been considering doing the Cherokee 4.0 and AW4 conversion for a while now. I know it has been done hundreds of times and this subject has...
  5. YJ Technical Discussion
    I own a '93 Sahara, 4.0, 3 speed auto. It ain't pretty, some rust in the tub, front fenders are shot too. But,worst of all, my frame is rotted really bad by the rear shackles. If I fix the frame, I still have a pretty beat body. I may have found an answer to my problems! I met a guy...
  6. YJ Technical Discussion
    Finally acquired a 4.0 from a 98 TJ. Will eventually stroke it, but what else do I need to do to get it operational in my 90 YJ? (I will be using the original TF999 tranny.) Computer and harness are obvious, but what about fuel pumps, pressure regulators, crank...
1-6 of 7 Results
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