I havean 89 xj with the 4.0 and I want to kno if I can put the head and intake from a newer model xj on with out a lot of issuses. Somebody help please
06-23-2013 08:46 AM
Not without doing a lot of extra work. You're going from Renix to HO so the engine management is different. Ports are different too. Much easier to swap the motor entirely or swap a Renix head to your Renix block.
06-23-2013 04:07 PM
Yep. Really not worth it anyway. What are you hoping for?