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Radiator Upgrade

Old 10-09-2012, 09:36 PM
  #1  
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Join Date: Oct 2012
Location: San Clemente
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Year: 1989
Model: Cherokee
Engine: Inline 4.0
Default Radiator Upgrade

I recently discovered that you can replace a closed radiator system (87-91) with a 1992-2001 Cherokee radiator system (open system) while enduring minimal modification. I put a 1996 system on my 89 Cherokee pioneer. The radiator is the perfect size i only had to find a way to put the new vertical overflow box in the place of the former horizontal one. And there are also a few slits in which the clutch fan cover sits, that will not fit with the new radiator so instead of using the fan cover from the new radiator I just cut off the bottom of the old cover.

The only strange part is that there is a little orifice in which a valve with some wires attached just above the lower radiator hose, on the driver's side, on the closed system. i just disconnected the terminals and didn't bother putting it on the new one (since there wasn't a spot for it). Any idea what it is for? I was guessing it was a heat sensitive switch to activate the fan but I'm not sure...any ideas?
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Old 10-09-2012, 10:08 PM
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Location: Red Lion, PA
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Year: 1991
Model: Cherokee(XJ)
Engine: 4.0
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this should be under oem tech, not jeep builds
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Old 10-09-2012, 10:18 PM
  #3  
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Location: San Clemente
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Year: 1989
Model: Cherokee
Engine: Inline 4.0
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sorry I'm still learning the website. is there a way i can transfer this post thread or can you send me the link to the right place to post it?
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Old 10-09-2012, 10:50 PM
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that im not sure but you will get much more feedback in the other section
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