I have a 89 jeep cherokee 4.0 auto and I,m looking for a donor engine to rebuild while I,m driving mine.Is there a certain year I should be looking for that would be the same.Is the renix engine only made in certain years?Any other tips would be nice like cracks or other things that are common on a 4.0

 

87-90 engines are similar to each other.

 

87 to 92 Comanche can be used.
87 to 99 Cherokee can be used.
94 to 98 Grand Cherokee can be used.
Wrangler 4.0s through 98 interchange.

All with little or no modifications.

 

99 grand won't work. That wj year 1.

 

Thanks. Hopefully I got it all correct now.

 

your welcome. We are all here to keep each others heads on straight.

 

The 99 wj 4.0 had the bad head also on it.

 

That's the first I heard of that. Do you have a reference with proof?

 

The wj came out with the 0331 head and ran tell 02 mid year with it before the tupy head replaced it.

 

OK. Did the Wrangler have it too?

 

All 4L from 2000 to 2001 and 99 wj and possibly tj not sure on the change for wrangler had the bad head.