4.0 engine compatibility - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 94 Old 08-13-2012, 09:22 PM Thread Starter
carleesjeep17
Registered User
2000  
 
Join Date: Aug 2012
Location: port huron
Posts: 5
4.0 engine compatibility

Hello,
I have a 2000 cherokee sport with the 4.0 eng. I have removed the old eng. that threw a rod. I am searching for a replacement and wondering about compatibility with other years/models. what will work with my 2000 chasis (auto trans; 4X4)???...thanks!

carleesjeep17 is offline  
Sponsored Links
Advertisement
 
post #2 of 94 Old 08-13-2012, 09:49 PM
thoag
Registered User
 
Join Date: Aug 2012
Location: McKees rock
Posts: 16
I be leave every motor 4.0 from 97 to 02 were the same but don't quote me
thoag is offline  
post #3 of 94 Old 08-14-2012, 06:01 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,171
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 #4 of 94 Old 08-14-2012, 06:36 AM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 24,877
Any 1990-2001 XJ Cherokee or 1993-98 ZJ Grand Cherokee 4.0L engine block will interchange and fit.

Remove and re-use as needed or required from your original engine: Intake/Exhaust manifolds, flex plate/flywheel, cylinder head, distributor-less ignition or distributor assembly, engine sensors, motor mounts, fan belt driven accessories and/or mounting brackets.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #5 of 94 Old 08-18-2012, 04:01 PM Thread Starter
carleesjeep17
Registered User
2000  
 
Join Date: Aug 2012
Location: port huron
Posts: 5
How can you tell if its a ZJ or a WJ Grand Cherokee?

Quote:
Originally Posted by cruiser54 View Post
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.
carleesjeep17 is offline  
post #6 of 94 Old 08-18-2012, 06:23 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,171
ZJs were 93 to 98.
cruiser54 is offline  
post #7 of 94 Old 08-18-2012, 07:38 PM
5-90
Registered User
 
5-90's Avatar
1988 XJ Cherokee 
 
Join Date: Sep 2006
Location: San Jose, CA
Posts: 5,343
I've posted what changed and when with the 6-242 engine on several boards, and I think this was one of them - you may want to check.

You'll find your options will open up, however, if you look for a short block and clean up the head. Every 6-242 block will accept every 6-242 head, and even the 1975-up 6-258 uses the same screws and screw pattern as the 6-242 (earlier sixes use 7/16"-14 screws, which requires some small adaptation to make them work.)

If you use a RENIX block, just ignore the drilled/tapped hole for the knock sensor (or just put a screw in there and call it good - the hole doesn't communicate with any fluids.)

There were changes to the block (internally - casting revisions) ca. 1991, 1996, and 1999 - but that won't have anything to do with accepting a cylinder head. (Revisions were usually due to NVH - Noise, Vibration, Harshness - concerns.)

I have heard there were differences in mounting between the TJ/YJ and the XJ/MJ/ZJ/WJ, but I can't swear to anything. However, they're probably adaptable as well, I'm just not sure how much effort would be involved.

The 2000 XJ 6-242 should have the #0331 head - which was used 1999-up in the TJ and WJ, and 2000-2001 in the XJ. However, there earlier #0331 heads (through about mid-2001) hare the ones that crack, they've ogt about a 50/50 chance of doing it. The heads were revised ca. mid-2001, the revised head carries a cast-in "TUPY" mark on the upper surface.

Typically, the cracking occurs ~150-180Kmiles, and if they crack, it will be on the upper surface, roughly under the oil fill cap (between the #3 and #4 cylinders.) Any of the later #0331 heads will replace the earlier ones, so there are more heads that are less likely to crack than heads that are likely to do so (make sense? I wasn't sure how to phrase that.) Manifolds and attachments will readily swap.

HTH, YMMV

"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline  
post #8 of 94 Old 08-18-2012, 09:10 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,171
This may shed some light on the different blocks:
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 #9 of 94 Old 08-20-2012, 09:26 PM
5-90
Registered User
 
5-90's Avatar
1988 XJ Cherokee 
 
Join Date: Sep 2006
Location: San Jose, CA
Posts: 5,343
Quote:
Originally Posted by cruiser54 View Post
This may shed some light on the different blocks:
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.
I'd thought there was something going on. Do you have any idea what the specific differences might be?

"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline  
post #10 of 94 Old 08-21-2012, 06:07 AM
CJ7-Tim
Real Jeeps have dents
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
Posts: 24,877
The reason is motor mount bolt holes and belt driven accessory locations and their mounting bolt holes are in different locations, or simply not present at all, TJ/WJ vs. XJ/ZJ.

Some hole locations are not drilled/tapped, and some simply have no material on the block for a hole to be located in. The swap can be accomplished, but is not worth the efffort.

.

A recent Gallup public opinion poll shows the NRA, at 58% approval, has a higher approval rating than either Hillary Clinton or Barack Obama.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ...

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline  
post #11 of 94 Old 04-16-2013, 10:51 AM
JazzGallons
Registered User
 
Join Date: Apr 2013
Location: murfreesboro
Posts: 1
Transmission

Is this the same for transmissions. I have a 1998 wrangler 4.0 and have a 1998 cherokee transmission that I was wanting to put in.
JazzGallons is offline  
post #12 of 94 Old 04-24-2013, 10:21 PM
Simmbad
Registered User
1976 CJ7 
 
Join Date: Mar 2013
Location: Modesto
Posts: 22
Sorry to jump on your tread, what would the best replacement motor be for a 1989 4.0.... I am in CA so it needs to pass smog... or just rebuild the one I have?
Simmbad is offline  
post #13 of 94 Old 04-25-2013, 05:20 AM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,171
This will help you. Just use all your "external" stuff.

Cruiser’s HO into Renix Swap

This swap is easier than some will lead you to believe, generally those who have never done it. Those of us who have done it, like myself, will share with you the things that need to be done for a successful swap. Just think of it as swapping in a long block.

The HO and Renix have some differences but none that can’t be overcome very easily.

Any HO engine from an XJ or ZJ through 1999 can be used. One running change was that the rear of the head was no longer drilled and tapped for the temperature gauge sender beginning in the 96 model year. The sender can be relocated to the threaded hole in the thermostat housing taken from the HO engine. You’ll have to extend the wire to that location. Some brave souls even drill and tap the HO head for the sender.

You will be using the intake and exhaust manifolds from your Renix, along with all your sensors and wiring. Since the intake ports of the HO are slightly different, you use the Renix gasket. Exhaust ports are identical.
You will need to use your Renix distributor as it is different than the HO because they use different fuel management systems. The flywheel or flexplate from the Renix must be used so your CPS gets the correct signals. The valve cover from the Renix allows you to keep your CCV system intact and requires no modifications.

The HO block will have a plug in the coolant galley on the driver’s side of the block, closest to the front, which needs to be removed so your Coolant Temp Sensor can be installed in it’s place just as it is on the Renix. It requires a 5/16” square drive or a modified 3/8” drive that has been ground down to fit. Do this before installing the engine.

As for the knock sensor, which is located just above the oil pan on the driver’s side of the engine about mid way, all the blocks I’ve seen are threaded for it. If not, I’ve heard they may be drilled but not tapped. Tap the hole if that’s the case.


Revised 03/28/13

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
post #14 of 94 Old 04-26-2013, 06:23 PM
Simmbad
Registered User
1976 CJ7 
 
Join Date: Mar 2013
Location: Modesto
Posts: 22
Thank for the info, have seen afew low mileage HO motors and had wondered if they would work. My current 4.0 has over 200k on it.
Simmbad is offline  
post #15 of 94 Old 04-26-2013, 08:16 PM
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott
Posts: 11,171
Quote:
Originally Posted by Simmbad View Post
Thank for the info, have seen afew low mileage HO motors and had wondered if they would work. My current 4.0 has over 200k on it.
No worries.

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline  
Reply

Tags
cherokee , compatibility , engine

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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Engine Compatibility bullydad XJ Cherokee Technical Forum 2 03-03-2012 09:28 AM
Engine Compatibility stinealbert XJ Cherokee Technical Forum 1 12-14-2011 12:20 AM
engine compatibility nhlnms XJ Cherokee Technical Forum 12 06-16-2010 01:55 PM
2.5 engine compatibility 01xjltd MJ Comanche Technical Forum 1 04-03-2010 09:01 PM
Engine compatibility Lkhoyt XJ Cherokee Technical Forum 9 06-08-2007 09:49 AM

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