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When should I swap my motor/ tranny out?

Old Jun 20, 2012 | 02:57 AM
  #1  
Dirterry's Avatar
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Model: Cherokee
Exclamation When should I swap my motor/ tranny out?

my 1990 jeep cherokee has 321090 miles on it. still runs great but i recently received an offer for a motor and tranny with only 93k miles on it. im just trying to get some opinions on if i should buy it or not.
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Old Jun 20, 2012 | 03:52 AM
  #2  
Thexjfiles's Avatar
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From: Stokesdale, NC
Year: 89XJ,98ZJ,72K10, 06 Tundra..
Model: Cherokee
Engine: 4.0
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Buy it, put new gaskets/rear main, and valve seals on it and store it for when your current work horse finally give up the ghost.
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Old Jun 20, 2012 | 04:13 AM
  #3  
Browny10783's Avatar
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From: Round Rock
Year: 1991
Model: Cherokee
Engine: 4.0
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Originally Posted by Thexjfiles
Buy it, put new gaskets/rear main, and valve seals on it and store it for when your current work horse finally give up the ghost.
^
Agreed
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Old Jun 20, 2012 | 05:24 AM
  #4  
89eliminator's Avatar
aka Wade-O
 
Joined: Dec 2008
Posts: 3,703
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From: IN
Year: 1989 Comanche
Model: Cherokee
Engine: 4.0
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i agree as well. no reason to replace something that isnt broken.
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Old Jul 1, 2012 | 01:06 PM
  #5  
odgreen's Avatar
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From: some small town oregon
Year: 1989
Model: Cherokee
Engine: 4.0
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thats how im doing it.... 411k still running 100k engine in the garage just waiting..
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Old Jul 1, 2012 | 01:22 PM
  #6  
94xjohio's Avatar
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From: Cuyahoga Falls
Year: 1994
Model: Cherokee
Engine: 4.0l
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Originally Posted by odgreen89on35s
thats how im doing it.... 411k still running 100k engine in the garage just waiting..
Kick *** 411k miles. Take care of her and go after that honda accord that turned a million miles
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Old Jul 1, 2012 | 01:40 PM
  #7  
Oxen__'s Avatar
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From: Burington Washington
Year: 1989
Model: Cherokee
Engine: 4L Renix
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Originally Posted by odgreen89on35s
thats how im doing it.... 411k still running 100k engine in the garage just waiting..

was yur rig featured in 4wheel parts mag? i remember reading an article . rig looked like yours and said to have 400+ on the original engine.
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Old Jul 1, 2012 | 01:40 PM
  #8  
odgreen's Avatar
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From: some small town oregon
Year: 1989
Model: Cherokee
Engine: 4.0
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Originally Posted by Oxen__

was yur rig featured in 4wheel parts mag? i remember reading an article . rig looked like yours and said to have 400+ on the original engine.
Yep.
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Old Jul 1, 2012 | 10:38 PM
  #9  
KJamesJR's Avatar
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From: New Hampshire
Year: 1998
Model: Cherokee
Engine: 4.0L I6
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That's how I would do it... So long as the engine wasn't out of a 00+ Cherokee. Swap it out when the current motor dies, rebuild the old motor, swap it out again when the new one goes. You'll have a Cherokee for life.
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Old Jul 2, 2012 | 01:49 PM
  #10  
SpruceJedi's Avatar
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Posts: 365
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From: Northern Michigan
Year: 2000 XJ
Model: Cherokee
Engine: 4.8L Stroker
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Amen to that. As long as its not from 1999-2001 I'd hold on to that gem and just wait it out. If you get a catastrophic failure at some point, you are loaded for bear. I know its a big hunk of iron to have sitting around your garage, but you will be happy with it some day.

I had a 2000 engine, cracked the head, built a 1994, best move I ever made.
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