I've been considering a V8 swap into my yj. I haven't found an ideal donor vehicle, but have run across a cheap Durango with a good 5.9. Where can I find info for the OBD2 to OBD1 issue or other info on how people made the swap and worked out the computer junk? I don't want to build another vehicle that I could never sell if I wanted to. Been there, done that. I'm in California, but smog not required except on transfer. Oh, and I understand Durango's have some security measures with the computers that Rams and Dakotas don't have? Any info on that?

I converted an OBD1 to OBD 2. You can use a pickup truck computer. Not sure if there would be any other issues with Jeep. Getting the pinouts for your Jeep would help out to match everything else.

https://board.moparts.org/ubbthread...-obd2-conversion-update.html#Post2678921

Jonesy was an immense help (along with HotRodDave) on my 5 spd. manual swap into my old '00 5.9 Durango and now with swapping the 5.9 into a Dakota.
Are you going auto or manual on the trans? If manual I used a PCM from a '00 Ram 1500 5.2 ( read several places that a 5.2 PCM would be too lean for a 5.9 but mine runs great).
Here's a PCM swap grid (courtesy of Jonesy ) that will help.



https://www.hotwireauto.com/chrysler-harnesses

Not sure about Dakotas/Rams but some Durangos came with a chip key. Mine didn't but had the factory security system. After I swapped in the truck PCM I never had a problem with the alarm system.



Tim

I'll probably go with an AX15, but since I'm just starting to gather info I'm gonna pass on this OBD2 engine for now. I'll keep looking for a 93-95 5.2/5.9 donor vehicle. The rest of the jeep still needs plenty of stuff

Ok, so today I picked up a 5.2 with pcm, wiring, and accessories out of a 93 Dakota. Also found an AX15 with 231 and SYE. Got motor mounts and Dakota 3.9 bell on the way. The fun has begun!