XJ2 4.0 to XJ1 4.0 swap

[JimLahey]

Has anyone done a complete swap of 2000 4.0 to older cherokee? I have a 2000 xj with 4.0l. I love the way it runs. I want to swap this 4.0l in my 1988 cherokee with no rust. Both are automatic and both have the 4.0l.

I will swap both engines and transmissions/xfer cases. I know I need a lot more, practically everything.

Is there a write up of the being done somewhere here?

Thanks.

 

[75SV1]

https://naxja.org/forum/showthread.php?t=1115935

In the write up section. Cruiser54 sometimes shows up here from time to time or on Comanche Club. Probably the best source for RENIX stuff.

 

[smokeyyank]

Been done plenty of times. Just look for a 97+ OBDII conversion. It's not a bolt and go affair just FYI. You need to completely swap the harness and all. Other option is doing a HO conversion and leave the renix. That's what I'm doing on my MJ.

 

[75SV1]

I disagree on swapping the whole wiring. The two paths are to adapt the RNIX TB to the HO intake manifold, or wire the HO TPS to the RENIX wiring. I think HESCO might sell something for this.

 

[smokeyyank]

If you want obdII you need to rewire it. If not yes you can adapt the tps.

 

[JimLahey]

Any posts out there of what components need to be moved over, locations? Can I keep the old XJ gauges/dash? Are all the components engine compartment related? Are there things like fuse block or some hidden box behind dash that needs to be moved over?

 

[RCP Phx]

Your going to need everything including the flex plate. What I can't help you with is the mounting points of all the accessories, that might be a issue.

 

[75SV1]

I miss read the OP's question. Actually, I plan the same swap. There are some things I like about the 2000 Federal wiring. I think there is a build on this at the Comanche Club board. I'll see if I can find it. There is an aluminum part that the steering column bolts to in the 97-01 body. As I remember the guy did some cutting. I want to see if I can get around that.

Edit: I think this is the thread I remembered:
https://comancheclub.com/topic/32740-alexias-1987-to-1997-comanche/page/5/#comments

 

[RCP Phx]

I miss read the OP's question. Actually, I plan the same swap. There are some things I like about the 2000 Federal wiring. I think there is a build on this at the Comanche Club board. I'll see if I can find it. There is an aluminum part that the steering column bolts to in the 97-01 body. As I remember the guy did some cutting. I want to see if I can get around that.

Edit: I think this is the thread I remembered:
https://comancheclub.com/topic/32740-alexias-1987-to-1997-comanche/page/5/#comments

I have no idea what your talking about, there is nothing forward of the firewall.

OP, if your trying to use the 2000 PCM then your in for a tremendous challenge. The electrics are totally different.

 

[75SV1]

I have no idea what your talking about, there is nothing forward of the firewall.

OP, if your trying to use the 2000 PCM then your in for a tremendous challenge. The electrics are totally different.

Not sure what 'no difference'. There is a difference with the plug in from the 99 to the 2000 Alternator. The wiring is a bit different. He is planning from '88 Renix to 2000. So, a lot of differences. The location of the Washer bottle and Radiator Overflow. Yes, a lot of work. Check the build I posted the link to.