JeepFan

My 1990 XJ's engine has lost compression on #6 (30psi) and my oil pressure isn't what it should be, so it's time for a rebuild. I'm looking for a donor engine so I can still drive my XJ if necessary while I build the new motor.

From what I have found on this forum, any XJ or ZJ engine through 1999 will work with my Renix as long as I retain my flex plate, intake/exhaust manifold, distributor, etc. Is this right?

Since I will be doing the rebuild myself, is there anything I should do (or shouldn't do) while I am at it?

I am considering boring it, aluminum pistons, bumping up the compression, cam, etc. Nothing too radical - just want a little more oomph. This vehicle is basically my daily driver with very little off-road activity. Any suggestions or advice would be appreciated. Thanks!

XJwonders

U had to post this in two different sections?

JeepFan

Wasn't sure where to post it... Under the stock forum (since it is currently almost stock) or under the modified section (because I'm going to modify it).