4.0 L engine swap (quick question)
Thread Starter
Newbie
Joined: Jan 2011
Posts: 19
Likes: 5
From: TX
Year: 1993 RHD
Model: Cherokee
Engine: 4.0 HO
I have a 1987 Cherokee and the motor went south on it. I found one out of a 2000 will it bolt in? Were there any changes made to the engine mounts or the transmission bolt patterns?
Thanks for any help you can give me.
Thanks for any help you can give me.
CF Veteran
Joined: Oct 2009
Posts: 2,867
Likes: 16
From: Fauquier County, Virginia
Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
Make sure you grab the coil pack, ECU, sensors, wiring harness, etc...
Your basically tossing a 2000 OBD II 4.0 into a Renix XJ... not just a cakewalk lol
Your basically tossing a 2000 OBD II 4.0 into a Renix XJ... not just a cakewalk lol
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CF Veteran
Joined: May 2010
Posts: 1,680
Likes: 5
From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
CF Veteran
Joined: Jan 2011
Posts: 2,765
Likes: 0
From: Littleton, CO
Year: 1991
Model: Cherokee
Engine: 2001 4.0L
yes it will swap in. i put a 2001 engine in my 91 xj.
yes i know its not a renix, but a 4.0 is a 4.0 as far as bolting up....i have been told tj blocks have different mounting holes for the motor mounts. i have never looked to confirm.
you just stab the distributor in the coil pickup hole(its the same hole as a distributor). just use all the brkts and accessories off of your 87. only use the block, head, and valve cover and it works like a charm.....no need to change cams.
EDIT-there was one difference. the 01 engine did not have a hole on the back head for the temp sensor. i made an adapter to put the sensor in my heater core feed line. its not hard to do.
pm me with any questions.
yes i know its not a renix, but a 4.0 is a 4.0 as far as bolting up....i have been told tj blocks have different mounting holes for the motor mounts. i have never looked to confirm.
you just stab the distributor in the coil pickup hole(its the same hole as a distributor). just use all the brkts and accessories off of your 87. only use the block, head, and valve cover and it works like a charm.....no need to change cams.
EDIT-there was one difference. the 01 engine did not have a hole on the back head for the temp sensor. i made an adapter to put the sensor in my heater core feed line. its not hard to do.
pm me with any questions.
Last edited by MallCrawlXJ; Jan 31, 2011 at 06:12 PM.
CF Veteran
Joined: Jul 2010
Posts: 1,971
Likes: 5
From: WNY
Year: 1999
Model: Cherokee
Engine: 4.0 High Output
Yes they are. If your going to get something from a newer xj then get something 97-99 they dont have head issues because they have a different casting. If you want the best go for a 99 if you can get the intake/head with it because it flows better then other years.
Senior Member
Joined: Jan 2011
Posts: 689
Likes: 2
From: Upstate N.Y
Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0
All you really need to do is swap all your renix onto the ho block and head. You might have to check if the older intake will bolt up to the 0331 head or if the newer intake will work out ok. Make sure the 0331 is the newer casting also. It will be worth haveing the better head.(bad head casting mid 1999 thru early 2001)
Last edited by 413maxwedge; Feb 1, 2011 at 02:06 PM.


