what years 4.0 engine for TJ

any year block will work, what you need to do is to cut the 4banger mounts off the frame and move them up to the 4.0 spots, I moved mine 4 1/4 inces forward

is your jeep modded? what is your reason for the swap, most people will say if its stock and low miles, trade it in/sell it and buy one with a 6cyl, its hardly worth the headache, right now you could steal a nice TJ sport/sahara.

The thing is, I doubt your doing this swap on a stock vehicle, if you are, then definitely just sell it, but if you do have a modded vehicle or any type of lift/tires thats making you hate the 4 cyl because you have stock gears, odds are you are gonna want a stronger axle in the rear.

If you sell/start over, there are sahara's/sport model TJ's that have the D44 stock, (check for metal drain plug on pumpkin) which would be a much better base to start with rather then ripping engines out and swapping axles, but hey thats just my 2 cents.

Quote from slick

there are sahara's/sport model TJ's that have the D44 stock, (check for metal drain plug on pumpkin)

A metal fill plug yes , but not all 44's have a drain plug

thanks

Quote from Rookiejeeper

When i did some reserch into swaping my 2.5 for a 4.0 the frame mounts for the engine do NOT need to be moved. This is only true as far as i know for TJ's
You will need to change transmissions, also change transfer cases unless you can find a junk tcase frome a 6cyl setup and pull the input gear.

really, i know for a fact that in the yj's the motor mounts must be moved, but i was under the impression that you had to do the same for the TJ, you can do it without moving them forward, but the angle between the t-case output and rear axle will be extreme. i guess it depends... i will have my swap done before the end of feb. im swapping an 01 tj 4.0 into a 92 yj