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Sitting on my 94 w/96 Motor...runs great...except rod bearings are shredding metal...

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Old 07-18-2019 | 07:58 PM
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DCWinterXJ's Avatar
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From: NJ
Year: 1994/ 96 engine
Model: Cherokee (XJ)
Engine: 4.0 HO Straight 6 Baby!
Question Sitting on my 94 w/96 Motor...runs great...except rod bearings are shredding metal...

Right so I still have my 94 XJ with the 96 motor and it runs super awesome minus the shredding metal dilemma. I pulled the insurance and she is eroding in my driveway. I don't have any real money left to do anything expensive to her, it is all left to my Jacked up TJ. But if I can pull the oil pan and replace the bad rod bearings...,I would do that...I have heard good results from pulling the pan and bad...I have all kinds of jacks and lifts(well not a real lift)...but I am willing to try. If this is the problem how long can I expect her to last with new rod bearings? My pops told me how the camshaft can wear and become shaped incorrectly but I still might be able to get away with it....I guess I won't know the whole truth until I get that pan off. Any suggestions from some old friends?
Old 07-19-2019 | 03:18 AM
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If there is metal in the oil you will never get it all out. It will chew through new bearings fast.
Old 07-19-2019 | 08:20 AM
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Year: 1994/ 96 engine
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Originally Posted by Weou09
If there is metal in the oil you will never get it all out. It will chew through new bearings fast.
So do you think the motor is trash? I have heard people on this forum get away with replacement rod bearings for some time. So how fast is fast?
Crap I gotta get ready for work thanks for the reply!
Old 07-19-2019 | 11:01 AM
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Honestly, the motor will probably last a short while with new bearings. The motor is probably toast anyway. The best advice would be to part it out or sell it and sink money into the TJ. Save whatever you can as far as parts that would work for the TJ (probably not many, but who knows). If the truck is rust free you should be able to part it out or sell it whole somewhat easily. Let us know what you decide
Old 07-19-2019 | 12:37 PM
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Originally Posted by DCWinterXJ
So do you think the motor is trash? I have heard people on this forum get away with replacement rod bearings for some time. So how fast is fast?
Crap I gotta get ready for work thanks for the reply!
By no means am I saying the motor is trash. The only way to save it however is to disassemble the motor entirely and have it professionally cleaned. Then install a new oil pump for sure. Even having one cleaned at an engine shop I have gone throw with the oil galleys with brushes and gotten a lot of metal out. Really the only way that motor will ever be reliable again.

Also fast is fast. The first start up will redistribute metal into all the bearings. It will score everything. Could last a while could show signs of a problem just after first start up...

Last edited by Weou09; 07-19-2019 at 12:39 PM.
Old 07-20-2019 | 03:49 PM
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Originally Posted by Red1992XJ
Honestly, the motor will probably last a short while with new bearings. The motor is probably toast anyway. The best advice would be to part it out or sell it and sink money into the TJ. Save whatever you can as far as parts that would work for the TJ (probably not many, but who knows). If the truck is rust free you should be able to part it out or sell it whole somewhat easily. Let us know what you decide
It has a lot less rust then the TJ so I may just sell it. I put so much money in the TJ I need all I can get...but yes I am gonna keep it for spare anything I need for my TJ. After that she is up for grabs. Such potential and I can't afford to do any more. Stupid TJ was not supposed to happen,,,,my brother in law convinced me and now I gotta deal with more than I could ever say. We shall see. Monster project at this point, My XJ was supposed to be my baby and my project. Nothing turned out right. Once motor number 2 went I got the TJ through a dam loan and now my baby love XJ is toast, I am certainly conflicted. Never been a Jeep guy. Only loved cherokees....and only XJ
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