advice for 89 xj 4.0 cooling system upgrade? - JeepForum.com
 
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post #1 of 2 Old 12-23-2011, 11:14 AM Thread Starter
94sahara23
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1994 YJ Wrangler 
 
Join Date: Dec 2011
Location: Athens
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advice for 89 xj 4.0 cooling system upgrade?

Finally...I got the 89 XJ that has been in the family since it rolled off the lot brand new. I have never been a fan of it's closed cooling system. Can anyone give me an overview of a comprehensive cooling system upgrade so that I can convert to an open system?

Other than a cap'd radiator, what else will have to be added, thrown away, ignored, and/or modified? (Can't wait to burn that pressurized bottle that loves to crack!)

Any advice before I attempt this will be greatly appreciated!

Thanks,
94sahara23

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post #2 of 2 Old 12-23-2011, 08:06 PM
MidTnSahara
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2001 TJ Wrangler 
 
Join Date: Mar 2011
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you will need an overflow resevior, some 5/8 heater hose, and a 92 or newer thermostat housing to wire in instead of the sensor thats in the radiator of yours. Its pretty easy. I used an overflow from a 93 blazer and it fit well.

When I bought my jeep it had never been offroad. I quickly fixed that. On the test drive. The lady who owned it freaked out. Pretty Funny
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