jeepin4fun97

Ok I have a 97 jeep Cherokee se with 3" lift. The motor yo me is kinda weak.. im wanting to swap it out with one that has a lil less miles on it but I need to know what 4.0 will work ... do u match a bin # up with one or what ... any help would be great thanks

Donnie_K

91-99 should work. But are you sure it's your motor that has the problems? or is it maybe something simpler? clogged cat? problem with fuel delivery? etc... Is it smocking or knocking or anything?

mikeXJ1020

So your saying because the motor seems week you want to swap it out? How are all the other working systems. These engines last a long time and your gonna go through alot of headache just to swap a motor because this one is "weak".

Is the motor atleast blowing blue smoke (oil) out of the tail pipe? Knockin? Overheating?

Make some sense for us here guy

TheJerm

Any motor from 91 or 92 to 98 will work. How many miles does your have now? What size tires? Gearing?

I think you will be disappointed with a motor swap cause it wont be much of an improvement for the cost. Bolt on things like removing the mechanical fan, headers, 99+ intake, neon injectors, bored TB will have a greater affect.

Donnie_K

x2 on the bolt ons, I'm running everything he just listed and my jeep puts down some torque. But those aren't going to fix any other underlying problems you may have... the 4.0 really wasn't a slouch from the factory, and if your motor's got good compression and everything is tight, I'd try to diagnose the problem before I got into any upgrades.

Bustedback

What size tires and have you regeared?

jeepin4fun97

Ok the motor is blowing white smoke... I go through at least six quarts of oil in two weeks.... I have 31x10.50r15 on it now and stock rear end and gears... I know a guy who has an early 90 for like $300

jeepin4fun97

Has 195526 miles on it

TheJerm

Thats not kinda weak, that either a blown head gasket, cracked head or you have a piston with a hole in it. You can use the 90 block but not the 90 head for it wont match the ports on your intake/exhaust.

thelittlejeepthatcould

I really want to put a lot of work into my jeep but as of right now it is kind of a piece of ****, I just want some feedback if its worth it, it is my first car and I dont want to get rid of it,

Donnie_K

How's the body? clean or lots and lots of cancer? your motor should only be middle aged at 192,000 miles. These 4.0's go closer to 400-500 thousand miles if they're taken care of. If it's solid, put another motor in it... if it's rotting away, it may be time to pass it on and find a solid one. It's probably just a head gasket though unless the thing has been massively overheated numerous times.

jeepin4fun97

Well there is some cancer on the roof dent in the right rear door. But its in pretty good shape other then the paint coming off in some places

jeepin4fun97

Bobs85GT

For what it is worth, there is a member in Des Moines that had a 98 complete motor for sale.

https://www.cherokeeforum.com/f11/se...threads-65890/

Dig through the pages, it is there somewhere.

Bob

Donnie_K

Hell, that don't look bad at all, Build it!