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Can anyone recognize the brand of piston?

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Old Jul 3, 2012 | 02:59 AM
  #1  
Hatrick's Avatar
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From: Albuquerque, NM
Year: 1992
Model: Cherokee
Engine: 4.0L
Default Can anyone recognize the brand of piston?

Hey guys,

Can anyone identify what brand this piston is. It has a small crack in the rim. I removed the head to discover it was cracked, and found a small crack forming in this piston rim. I'd like to replace it with an alike piston. I was not part of the last rebuild and have not found one with wrighting on it like this one.
I was hopping that one of you gear heads could shed some light on it for me so i can go forward. Follow the photobucket link to see it.
http://i178.photobucket.com/albums/w...Cylinder1A.jpg

It has these casting marks:

FRT
->
50

I thought it was a .50 over but when I looked at pistons from several places all I find is, STD, .20, .30,.40 and .60.

any help would be appreciated.

Hatrick

Last edited by Hatrick; Jul 3, 2012 at 03:00 AM. Reason: mis spelled word
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Old Jul 7, 2012 | 12:20 AM
  #2  
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From: Albuquerque, NM
Year: 1992
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Dose the piston brand matter????
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Old Jul 7, 2012 | 12:23 AM
  #3  
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From: Ahwatukee, Phoenix, AZ
Year: 1995
Model: Cherokee
Engine: 4.0L
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I dont *think* the brand of piston matters, as long as its the same size/shape/etc. but i could be wrong
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Old Jul 7, 2012 | 12:42 AM
  #4  
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They're marked in metric. .50mm= 0.020" over
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Old Jul 7, 2012 | 07:37 AM
  #5  
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From: Albuquerque, NM
Year: 1992
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Engine: 4.0L
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Originally Posted by Radi
They're marked in metric. .50mm= 0.020" over
Thank you so much that was the answer i needed!
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Old Jul 16, 2012 | 04:59 AM
  #6  
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From: Albuquerque, NM
Year: 1992
Model: Cherokee
Engine: 4.0L
Default

Head
head, exhaust, intake, and valve cover gaskets
thermostat gasket
oil pump rebuild kit
oil pump tube and screen
1 piston for hole 1
piston rings
pan gasket
oil
coolant
replacing rods, and lifters (just because I can)
intake cleaned
fuel injectors cleaned
4 1/8" 320 grit ball hone purchased
cylinder ridge reamer purchased

Feel free to pipe up and in if I'm missing any thing.. Im taking my sweet time making sure everything is right and am open for suggestions.
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Old Jul 16, 2012 | 09:13 AM
  #7  
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Year: 1997
Model: Cherokee
Engine: 4.0
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i wouldnt rebuild the oil pump, just replace it. water pump? rear main seal?front main seal?
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