4.0 engine compatibility - Page 8 - JeepForum.com
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post #106 of 123 Old 07-22-2017, 07:17 AM
cruiser54
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If I understand this info correctly a 4.0 from a 93 Cherokee will interchange with the 4.0 in my 97 Grand Cherokee. Understanding that I may have to reuse a few parts. If I have to reuse my intake will it bolt up to the head of the 93 motor. Thanks

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Yes. Use all the stuff from your old motor on the new motor such as distributor, manifolds, flywheel, sensors etc.


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post #107 of 123 Old 07-22-2017, 09:22 AM
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Yes. Use all the stuff from your old motor on the new motor such as distributor, manifolds, flywheel, sensors etc.
Thank you! This whole situation really stinks since I just bought the rig on Monday and it went T/U on me yesterday. I literally drove it from the guys house to mine (about 8 miles) transferred the title and then this.

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post #108 of 123 Old 07-22-2017, 04:14 PM
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The only thing I would question is the oil filter adapter.
My 2001 XJ has a 1998 ZJ.
My ZJ block does not have the adapter and is in a slightly different location.
If same I would have no worries
GL
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post #109 of 123 Old 09-13-2017, 06:53 PM
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So I plan to go with the motor from the 94 and reuse the components needed from my 97. The issue I have is I plan to put in a new head gasket, but I can't find a set of stock head bolts. I can find Edelbrock bolts but they want like $100. Anyone have any suggestions? Thanks in advance.

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post #110 of 123 Old 09-13-2017, 09:54 PM
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So I plan to go with the motor from the 94 and reuse the components needed from my 97. The issue I have is I plan to put in a new head gasket, but I can't find a set of stock head bolts. I can find Edelbrock bolts but they want like $100. Anyone have any suggestions? Thanks in advance.

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Head bolts can be used twice. don't sweat it/.

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post #111 of 123 Old 09-13-2017, 09:59 PM
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Head bolts can be used twice. don't sweat it/.
Its an unknown that is the only issue. Was told that it is a stock motor that has never been opened up, but we all know what the word of the PO is like. Guess I'll wait n see. I do have a set of head bolts for the 97. I'll compare the two when the time comes.

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post #112 of 123 Old 09-15-2017, 05:22 AM
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Its an unknown that is the only issue. Was told that it is a stock motor that has never been opened up, but we all know what the word of the PO is like. Guess I'll wait n see. I do have a set of head bolts for the 97. I'll compare the two when the time comes.

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The '97 head bolts should have a 'locator pin' on the top of two of the bolts. These are to locate the Valve Cover gasket. Might look at NAPA if you need new ones.
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post #113 of 123 Old 09-15-2017, 08:41 AM
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The '97 head bolts should have a 'locator pin' on the top of two of the bolts. These are to locate the Valve Cover gasket. Might look at NAPA if you need new ones.
Couldn't find anything at NAPA either. And my 97 head dolts do have the pin on two of them. Shouldn't hurt any thing should it.

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post #114 of 123 Old 09-15-2017, 09:37 AM
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Couldn't find anything at NAPA either. And my 97 head dolts do have the pin on two of them. Shouldn't hurt any thing should it.

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I put a '95 head on an '03. I think I used the '03 head bolts. I would look where those two bolts should go, ie to locate the valve cover gasket. Also, FYI one of the bolts gets sealant put on it. I want to say #11. Check on that as I could be wrong.
I'll have to look at NAPA's site. They have changed stuff. Not sure of Ebay .


Edit: Looked at NAPA Probably ES71102 (14 pcs, two have locator dowel). ES72896 (not as many, possibly 4cyl)
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post #115 of 123 Old 09-23-2017, 11:06 PM
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So I have a question is a 1999 jeep Cherokee sport 4.0 compatible to go to a 2000 jeep Cherokee? Or is at least the parts compatible??
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post #116 of 123 Old 09-24-2017, 08:09 AM
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So I have a question is a 1999 jeep Cherokee sport 4.0 compatible to go to a 2000 jeep Cherokee? Or is at least the parts compatible??
Mostly. 2000 will have the distributorless ignition and the 99 will have a distributor. That means the ignition, head, and ECU are year specific and different for those two. Pretty much everything else swaps freely between the two. You could put the 99 engine in the 01 as long as you tool the ecu, too for example. You could also freely swap accessories, driveline pieces, body parts, etc.... between them

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post #117 of 123 Old 09-24-2017, 10:00 AM
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So the connecting rods block and crankshaft etc should all be compatible to swap over?
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post #118 of 123 Old 09-24-2017, 10:01 AM
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Quote:
Originally Posted by squallyforyou View Post
So I have a question is a 1999 jeep Cherokee sport 4.0 compatible to go to a 2000 jeep Cherokee? Or is at least the parts compatible??
Mostly. 2000 will have the distributorless ignition and the 99 will have a distributor. That means the ignition, head, and ECU are year specific and different for those two. Pretty much everything else swaps freely between the two. You could put the 99 engine in the 01 as long as you tool the ecu, too for example. You could also freely swap accessories, driveline pieces, body parts, etc.... between them


So the connecting rods block and crankshaft etc should all be compatible to swap over?
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post #119 of 123 Old 09-24-2017, 10:27 AM
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So the connecting rods block and crankshaft etc should all be compatible to swap over?
Should be, yup. As far as I know the only difference in the long block from 99 to 00 is that the 00 head has the the threaded holes to mount the coil pack for the distributorless ignition and the casting of the head itself. All internals match

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post #120 of 123 Old 09-24-2017, 10:30 AM
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Originally Posted by squallyforyou View Post

So the connecting rods block and crankshaft etc should all be compatible to swap over?
Should be, yup. As far as I know the only difference in the long block from 99 to 00 is that the 00 head has the the threaded holes to mount the coil pack for the distributorless ignition.
OK thank you very much. I actually am trying to fix up a 2000 and didn't even think about the ignition difference until you said something. Thank you for your help.
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