blown rod in 96 4.0 ho cherokee,what motor will swap in?

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ditchbangin500xc

NAXJA Forum User

Location

Alpena,MI

• Sep 25, 2009

• #1

so i just found out that i have a blown rod in my 96 cherokee with the 4.0 ho. i am now looking for a replacement motor and was wondering if anyone knows what year of cherokee motors will swap in perfectly.Any help is appreciated.Trav

 

wolfpackjeeper

NAXJA Forum User

Location

500' and 500KCAS, RAF lakenheath

• Sep 25, 2009

• #2

for you, anything newer than 1991, and older than 2000.

really any 4.0 should swap in, but getting as close to your year as possible will be best. Unless you want to build a stroker, then you get into some heated discussions as to what components to use

 

avnsteve

NAXJA Forum User

Location

South Austin or North San Antone

• Sep 26, 2009

• #3

any bottom end will swap in. if your head is good to go, just choose your best engine by price AND condition, not necessarily in that order, and pull the head, and use your head...

 

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ditchbangin500xc

NAXJA Forum User

Location

Alpena,MI

• Sep 28, 2009

• #4

heres a video of the engine noise.

http://www.youtube.com/watch?v=LTOYyADo49k

 

Last edited: Sep 28, 2009

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zedpapa

NAXJA Forum User

Location

san diego

• Sep 28, 2009

• #5

i put a 2002 4.0 in my 89. used all the 89 stuff and the newer cam gives great bottom end. i run 31x10.50 with 3.07 gears and it drives like stock. it was a lot of work though. but i would do it again.

zedpapa

 

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ditchbangin500xc

NAXJA Forum User

Location

Alpena,MI

• Sep 28, 2009

• #6

btw the motor makes the noise in all gears,and just gets louder with rpms.

 

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ditchbangin500xc

NAXJA Forum User

Location

Alpena,MI

• Sep 28, 2009

• #7

any other opinions?

 

avnsteve

NAXJA Forum User

Location

South Austin or North San Antone

• Sep 29, 2009

• #8

kinda hard to tell from here, but if you take a screwdriver, put the plastic by your ear and touch the other end to various points on the block and valve cover, you can better determine where the noise is coming from, if I had to guess from your video, I'd say piston slap, or rod knock. Rod knock may or may not be bad, it will eventually fail, but the piston slap is no big deal, folks have driven with piston slap for hundreds of thousands of miles with no more trouble than that noise...

 

POLAR_JEEP_04

NAXJA Forum User

Location

Ohio

• Sep 29, 2009

• #9

sounds like a wrist pin or bad rod bearing

 

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codysown

NAXJA Forum User

Location

Nebraska

• Oct 7, 2009

• #10

If you were closer, I have a 93 that runs good for sale pretty cheap that would swap right in.

Cody

 

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stephenspann27

NAXJA Forum User

Location

College Station, Tx

• Oct 7, 2009

• #11

I just rebuilt the bottom end of my jeep. Crank kit, and timing set from O'reilly, new oil pump. It all cost me about $250-$290 not bad.

 

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flexyxj

NAXJA Forum User

Location

SIOUX FALLS,SD

• Oct 8, 2009

• #12

That is a wristpin knockin'. I had a '92 that I ran for 3yrs and sold it and it was still running when they pulled the motor. I tried to blow it up on several occasions and couldn't do it. If you have good oil pressure-run it. My .02 worth.