I wanted to start by saying I love this forum, not sure if the wife does though
.... I started out the weekend planning on doing an oil change on my 4.2 YJ.. While the oil was draining I jumped on here and saw the posts about putting the 4.0HO head on.. so then I thought.. Hmmm maybe in the near future.. Then while completeing the oil change I found metal flake. Dropped the pan to find a handful of metal shavings. the bearings and part of the timing...
So now the plan is to do a full rebuild of the engine.. I was thinking about boring out slightly , going with larger pistons while im at it... Anyone have any thoughts or suggestions to stay away from or tips as this is my first rebuild.
I have a weber 32/34 carb now and already nuttered the YJ and did the Team Rush distributer cap swap. Will this affect anything?
I picked up the 4.0 head, valvecover, and exhaust manifold today from a local salvage yard for $30, Its the 7120 head, but was off of a 95 Grand Cherokee. I was thinking about switching over to the fuel injection being I now have it with the 4.0 head, but everything I read said to put the TBI, intake, wiring from an XJ. Is the wiring and everything the same from a Grand Cheerokee?
Anyone know If I can use this as part of my rebuild. I read on here that I need a VSS adapter. I think I have the VSS from the 4.0 as well. Can this be used again? Any modifications needed to use for the 4.2?
I wanted to ask the experts out here before I get started, just trying to figure out the best combination for power, drivability and gas mileage.