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2.5L to 4.6L swap
Posted: April 5th, 2014, 4:26 pm
by akadeutsch
I am in a jeep club at work and a guy here wants to swap his 2.5L for a built 4.6L stroker in his 94 YJ. I am helping him with his build because I think it is fun. The first thing that I want to know is what year 4.0 should I look to build? Does it have to be a 94 4.0? I know that we all switched to OBDII in 96. Does this mean I have to use a pre OBDII engine?
Re: 2.5L to 4.6L swap
Posted: April 5th, 2014, 5:45 pm
by SilverXJ
Any year except 99+ WJ and 00+ TJ should work fine. OBD II vs. OBD I has nothing to do with the block. OBD I did have a coolant temp sensor in the head that most OBD II heads did not have, but that is a minor issue.
Re: 2.5L to 4.6L swap
Posted: April 5th, 2014, 8:57 pm
by akadeutsch
Rad!!! Thanks Silver!!! Can I ask why the 99+ wj block is different? I only ask because I drive (or at least I did before I pulled the motor) a 00 WJ. In your opinion what block is best to build for a 94 YJ?
