What's involved with changing 2.5 to a 4.0 Manual Standard on 2002 Jeep Wrangler

What all is involved with changing from a 2.5 to a 4.0 engine. We are unable to locate an engine replacement at 2.5 so want to know where we can find out about what all is necessary to change to 4.0

by in Loyalhanna, PA on December 18, 2009
1 answer
ANSWER by on December 18, 2009
It is a big job, it is a new Computer and new wiring harness ( 4 cyl vs 6 cyl ) Have you tried Jeep? I used to buy new motors from Jeep for the 2.5 liter engines. They work really hard and tend to wear out. What about rebuilding your old motor? A good Engine Machine Shop could do it for about $1500 or less, not including taking out the old motor and putting the rebuilt one back in to the Jeep.