How hard are 4.0 motor swaps?

Reply Subscribe

Thread Tools

Search this Thread

Jul 24, 2009 | 01:19 PM

#16

miglia-spyder

Thread Starter

Senior Member

Joined: Mar 2009

Posts: 554

Likes: 1

From: Grand Rapids, Michigan

Year: 2000

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by mike37

before you go swapping motors check some of the things like loose torque converter bolts motor mounts trany mounts header down pipe power stering pump AC pump

4.0 can give you a rod knock sound for lots of reasons other than bad rods

I checked the Torque convertor bolts... I havent checked the belt Acessories... havent done the header down pipe. what goes wrong with that? Or the tranny mounts?

I just thought it was a rod bearing because when i changed my oil yesterday, the sound is a little different now. It actually sounds worse now!!!

Jul 24, 2009 | 01:57 PM

#17

mike37

CF Veteran

Joined: Nov 2008

Posts: 2,473

Likes: 9

From: Paso Robles Ca

Year: 1991

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by miglia-spyder

the motor and trany mounts go bad and things start to knock
the pipe gets bent and will knock

just remove the drive belt to check the power steering pump and accessories if the knock stops with the belt off the you know it not a rod

Jul 24, 2009 | 04:58 PM

#18

Jamie57

CF Veteran

Joined: Jul 2009

Posts: 1,254

Likes: 11

From: London Ontario Canada

Year: 2000

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by McRay

A grand Cherokee will not work eng mounts and accessery are different.

is that the engine mount bolt holes on the block or just the mounts themselves.
Would they have gone to all that trouble to make 2 different castings of the same engine for 2 different (Barely) vehicles?