4.0 engine compatability? Need experts info pleaze!! - JeepForum.com

 
LinkBack Thread Tools
post #1 of 12 Old 10-07-2012, 04:54 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
4.0 engine compatability? Need experts info pleaze!!

My 90 jeep Cherokee 4x4 5 speed is starting to have way to many issues ac body damage ect. So I found a perfect 2000 sport 4x4 auto with locked up motor. Can I take my good motor out of my 90 and put into the 2000? The 2000 comes with everything , can I make this work with no snags. wanting to pick this thing up ASAP. Thanks guys. 6063021101 if anyone knows for shure and wouldnt mind a short phone convo call me thankstodd

35thconvertible is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 10-07-2012, 09:49 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
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. (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.
cruiser54 is offline  
post #3 of 12 Old 10-08-2012, 03:33 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
So if I'm reading this correctly my 90 jeep motor won't go into a 2000 and up correct. Only a 99 and below in xj..correct
35thconvertible is offline  
post #4 of 12 Old 10-08-2012, 03:38 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
It will work but the heads are different. Not insurmountable since you're got both vehicles to work with.
cruiser54 is offline  
post #5 of 12 Old 10-08-2012, 03:41 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
Thanks for the help I guess what I'm getting at is what am I going to run into in this swap what all will I have to change? Also will it be worth the trouble or just go with older engine or fix blown engine in 2000 sport?considering money!
35thconvertible is offline  
post #6 of 12 Old 10-08-2012, 03:53 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
Fixing a locked up motor ain't gonna be cheap. Treat the swap like a long block swap. Use all the stuff from the 2000 like the dizzy/cam sensor, intake and exhaust manifolds, flywheel etc.
cruiser54 is offline  
post #7 of 12 Old 10-08-2012, 04:06 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
So I can remove engine out of 90 xj strip it down to heads intake and block and use ac ps wp fly and sensors exhaust mani from 2000. drop it in and it will start and run correct. No computer or wiring harness problems. Kinda need specific details so I don't end up getting bit on this.
35thconvertible is offline  
post #8 of 12 Old 10-08-2012, 04:12 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
That's the way it should go. My only reservation is the intake and exhaust port sizes. It would be good to go to the parts store and look at the intake/exhaust gaskets from the 2 years laid over each other.
cruiser54 is offline  
post #9 of 12 Old 10-08-2012, 05:35 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
Couldn't I use my intake and exhaust mani out of my 90? If they are different that is. What about dealing with going from obd1 to obdII.
35thconvertible is offline  
post #10 of 12 Old 10-08-2012, 05:39 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
Quote:
Originally Posted by 35thconvertible View Post
Couldn't I use my intake and exhaust mani out of my 90? If they are different that is. What about dealing with going from obd1 to obdII.
Maybe exhaust but not intake manifold. Need things to stay on the 2000 chassis. No worries about OBD.
cruiser54 is offline  
post #11 of 12 Old 10-08-2012, 05:55 PM Thread Starter
35thconvertible
Registered User
 
Join Date: Sep 2012
Posts: 41
So only thing I'll use from 90 is bare long block and bolt everything from 2000 onto long block. Which motor mounts 2000 I'm guessing? Read something about them being different.is 2000 cop ignition Correct? What will I do about that?
35thconvertible is offline  
post #12 of 12 Old 10-08-2012, 09:15 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,104
Transfer the ignition over. The mounts should be obvious.
cruiser54 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome