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Is it worth a rebuild???

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Old Aug 5, 2022 | 06:56 PM
  #1  
SurfcatXJ's Avatar
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From: SoCal
Year: 99
Model: Cherokee
Engine: 4.0
Question Is it worth a rebuild???

I have a 99 XJ with quite a few mods.I'm wondering what you all think about rebuilding the original engine in this rig?
DPG lift ~3.5" short arm with OME springs front and rear along with ACOS.
I have a Dana 30 front end with cromo shafts and ARB locker.
Back axle is a Dana 44 also with cromo axles and ARB locker.
Advanced adapter's SYE and Tom Wood's CV drive shaft.
As I said, the engine is original, there's currently 424,000 miles on her. It still runs well but it makes some clatter, piston wrist pin I think.
My options are getting the engine rebuilt or buying something with fewer miles a swapping my axles and suspension over to the new to me rig.
Let me know what you think
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Old Aug 6, 2022 | 12:13 PM
  #2  
Patman's Avatar
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From: In the desert
Year: 1995
Model: Cherokee (XJ)
Engine: 4.0 now 4.6
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The rebuild cost on these motors is reasonable. 1800-2200 bucks. Buying a new or reman motor will put you back at least 3k and getting a stroker will cost you in the 4-8k range depending on how much work you want done. I’d say, get it rebuilt, keep it stock, it’ll be cheaper and you’ve already got a lot invested in it. Good luck with it!
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Old Aug 6, 2022 | 02:38 PM
  #3  
SirCyber's Avatar
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From: Western Washington
Year: 1990
Model: Cherokee
Engine: 4.0L Renix
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just a thought. if it's running well and you get slight chatter, it might be your oil. I changed to Shell Rotella T6 and it quieted my chatter altogether. I will not use a different oil in mine. I have nearly 300k on mine and running strong.
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Old Aug 6, 2022 | 11:36 PM
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SurfcatXJ's Avatar
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From: SoCal
Year: 99
Model: Cherokee
Engine: 4.0
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SirCyber, I'm sure I tweeked a wrist pin driving home with 1 dirty injector. Should have used AAA...
Patman, I'm going to see if I can find a good rebuild shop. I have a friend that may be able to recommend someone.
We went up to the Lost Coast north of San Francisco recently, I wish I would have had the XJ, would have been no problem to make the whole run.
Thanks everyone for your input. I'll post up when I've made progress.
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Old Aug 7, 2022 | 07:24 AM
  #5  
joelle king's Avatar
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Model: Cherokee (XJ)
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it depends on how much you love it ! even with rebuild keep in mind you gonna face some obstacles too





Last edited by joelle king; Aug 7, 2022 at 04:31 PM.
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Old Aug 7, 2022 | 09:37 PM
  #6  
tech's Avatar
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From: Santa Clarita California
Year: 2001
Model: Cherokee (XJ)
Engine: 4.0L
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You can also get a used motor with lower miles and just go though it like new rings bearing oil pump and a valve job . or maybe a stroker ?

Last edited by tech; Aug 7, 2022 at 09:40 PM.
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Old Aug 8, 2022 | 08:12 AM
  #7  
Old Man Minimalist's Avatar
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From: Indiana
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0L
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For me as long as I'm not throwing good money after bad, a rebuild would be worth it.

I don't know the condition of the rest of the vehicle, but if it is overall in good shape, then I would do a full rebuild on the engine. Or once it's torn down, if the block is too far worn, then get a used one from the junk yard. But I'm getting "soured" on JY parts. Seems that most of what I find is just that; junk!

I now buy from the JY with the expectation that I will need to rebuild whatever it is I get.
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Old Aug 8, 2022 | 10:20 AM
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SurfcatXJ's Avatar
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From: SoCal
Year: 99
Model: Cherokee
Engine: 4.0
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I bought the rig new in 99. Paint is pretty thrashed but there's little to no rust. It has a fairly fresh head from Clearwater Cylinder Heads inc. The engine bottom end still looks good.
I thought about an engine swap but it's hard to know the history of a junk yard rig. tech, I like the stroker idea
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Old Aug 8, 2022 | 10:41 AM
  #9  
Old Man Minimalist's Avatar
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From: Indiana
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0L
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Originally Posted by SurfcatXJ
I bought the rig new in 99. Paint is pretty thrashed but there's little to no rust. It has a fairly fresh head from Clearwater Cylinder Heads inc. The engine bottom end still looks good.
I thought about an engine swap but it's hard to know the history of a junk yard rig. tech, I like the stroker idea
In that case, I would definitely try to rebuild what you have. Unless you want a stroker.
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