Hey guys. While my jeep is in pieces for the alternator upgrade I am doing I decided to swap the 4.0L throttle body onto my 4 banger. Here is what I have so far and I need some advice to finish.
I started by removing everything from the 4.0L throttle body and cleaning it thoroughly. I then removed the 2.5L Throttle body, it seems the previous owner has a spacer on already that I had not noticed. See it below.
You can also see that there is a good amount of oil inside the manifold. Is that a major concern?
Also should I leave the spacer on and just ad the 4.0L Throttle body?
Here you can see the differences in the two TB's.
In the above picture you can note the difference in size. I have swapped all the components off the 2.5L onto the 4.0L throttle body to avoid the idling issues. I also read in JP magazine's May issue that a guy who did the same swap and ran into a high idle at 1100 rpm. Be sure to check the grub screw under where the throttle cable connects. Once I figure out if and how to remove the current TB spacer on now I plan to put the newly built 4.0L back on. Ill take pictures as I go in case I have questions but so far the only problem I had with BOTH TB's were the dang screws that held the TPS on, of course they are torx and i think they used locktight on them. I filed them down so I could grab them with a pair of channel locks, but they were tough so use patience. Let me know what you think about the oil and TB spacer on there.