Okay you have some sanity in your post. I have a 2001 WJ GC and want to put a motor from a I believe a 98 ZJ into it. the coil pack bolts are there and most things look the same. I am going to drag the old engine over and comare motor mount bolt holes. Since you sound like you know what you are talking about. Do you think I am going to be able to do this engine swap. I dont want to have the engine hanging in there and find out I cant.. Thanks for the advice.
Posting #3 on this thread has all the swap compatibility info you need.
And here's an updated version:
XJ Cherokee and ZJ Grand Cherokee 4.0L engine blocks interchange.
2000+ TJ Wrangler and WJ Grand Cherokee 4.0L engine blocks interchange.
XJ/ZJ blocks and 2000+ TJ/WJ blocks do not interchange without significant modifications. (1991 to 1995 YJ and 1997-1999 4.0L TJ Wrangler blocks will interchange in XJ/ZJ and visa-versa).
TJ/WJ 4.0L Engine blocks underwent clean sheet design changes effective in the 1999 WJ Grand and 2000 TJ Wrangler. These blocks are not interchangeable with XJ/ZJ engine blocks. The reason is motor mount bolt holes and belt driven accessory mounting bolt holes are in different locations, or not present at all, TJ/WJ vs. XJ/ZJ.
Ok I have a similar question, I have read the posts and get a bit confused with all the xj xj Aj and all the other jays lol, I have a 99 xj Cherokee 4.0 that like many threw a rod! I just recently picked up a low mileage 4.0 out of a 96 Cherokee , will the swap work and can I use everything from my 99 4.0? Ie: intake manifold / exhaust header , all pulleys , belt driven accessories and if it will work do I use a felpro manifold gasket for a 96 or for a 99 , I would greatly appreciate any information since this is my first venture in jeep territory lol and all you guys seem to know what your talking about!
Remove and re-use as needed or requiredfrom your original engine: Intake/Exhaust manifolds, flex plate/flywheel, cylinder head, distributor-less ignition or distributor assembly, engine sensors, fan belt driven accessories and/or mounting brackets.
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Hello again guys, I have a problem with an engine swap I did , I have a 99 Cherokee that had a rod knock so I replaced that with a 96 4.0, all went well with the swap, I had to take the coil off the 99 engine that worked before and put it on the 96 because the plug was different , I also swapped out the distributor from the 99 and put it in the 96 for the same reason, the plug was different, I lined up the rotor and distributor from the 99 as close as possible to where the original one was on the 96 . My problem now is I am not getting any spark whatsoever! I am getting fuel, she cranks good and strong but no spark, I would appreciate any suggestions or ideas , thanks in advance for your time!
I have an update, it turned out to be the cps , when installing the new motor I must have take. Out one of the mounting bolts for the cps , I put that bolt back in which In turn positioned the cps in the correct spot and she fired right up! Ran a lil rough so I figured I would try to tweet the distributor a tooth and that perhaps might make her run a bit better but you know how it goes when you mess with something too much and I did and now I can't find my place on the distributor , I get it in a position were she tries to fire so I go one tooth forward and nothing , I go another tooth back and nothing, is there a way to find my way back or get the timing where it needs to be or at least close?
i just went thru this last night with my HO engine. i played with the possitioning of the CPS and it all went to hell. put the engine back to TDC and re align the cps and synchro. its not that hard to do and once its done you can check that off your list. here is a how to if your not sure
-pull the coil and number one plug
-place a finger down near the hole and have a friend bump the starter til you feel air come out.
-get a mirror and flash light and look down where your tdc mark is on the crank pully and light up the notch on the pulley with the 0 on the before TDC marks on the block. keep in mind you might have to go backwards to line it up.
-remove your Cam sensor from the synchro and loosen the retaining bolt that holds it into the block.
-rotate the housing around until the hole in the housing lines up with the whole thru the "bladed" piece in the center. i used a small cotter pin to get them lined up really well.
-tight down the retaining bolt, remove the cotter pin and assemble the parts you took off.
I have a 96 Cherokee w 4.0 / 5 speed manual transmission. Unfortunately the bottom is rusted beyond any reasonable restoration (I knew it on purchase, bought it cheap for the engine and drive train which run strong).
I've found a 2000 roller in need of a motor. Unfortunately I'm told that 99 and up the motor mounts are different and the bolt-up for the bell housing is different. I'm also told one can see the difference in that the oil filter is mounted differently.
I don't want to deal with an old Renix, I like my Chrysler fuel injection and it seems to like the bored out 62mm throttle body.
So, that means I need to find a 96 / 97 / 98 roller. Sound correct? Thanks.