T-stat upgrade - what, where, and how to - Page 2 - Cherokee SRT8 Forum

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WK1 General Performance Discussion If you are planning on modifying your Jeep Grand Cherokee SRT8 with a performance enhancing modification, this is the section to post about it.

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  #11  
Old 11-30-2007, 07:42 AM
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Excellent tech, nice to see you got rid of that LX and came over to the Jeep side and post some nice tech, we need more guys like you.

J
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  #12  
Old 11-30-2007, 10:05 AM
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Quote:
Originally Posted by Matt McKenzie View Post
Thanks bmartin. My Motorad 170 T-stat is sitting at home with my new radiator cap. Now I will get it done this weekend! As you said, I asked the guy for the part number at Autozone...he asked me my vehicle and I gave them the part number again. He started treating me like an idiot so I got his manager, got him in trouble...and then the manager found my part by the part number! Why are they like this???????
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  #13  
Old 11-30-2007, 10:16 AM
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You are right about that one as well bmartin!
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Old 11-30-2007, 10:16 AM
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Great job BMartin
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  #15  
Old 11-30-2007, 11:25 AM
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Excellent display for the less experienced diy.
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  #16  
Old 11-30-2007, 11:33 AM
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DO NOT force the 63.5mm MotoRad/Valucraft T-stats in, you need to file or bench grind off the excess material to get it down to the stock 63.0mm size. If you don't you will tear the gasket and it will eventually leak.
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  #17  
Old 11-30-2007, 12:45 PM
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Quote:
Originally Posted by GotStroke? View Post
DO NOT force the 63.5mm MotoRad/Valucraft T-stats in, you need to file or bench grind off the excess material to get it down to the stock 63.0mm size. If you don't you will tear the gasket and it will eventually leak.
While I certainly understand what you are saying, I have to respectfully disagree. The t-stat is a tight fit as mentioned in the post. However, forcing it is not required. Just "shoe-horn" it in, and everything will be fine.

I ran my 06 Mag this way (as have many others) for 2 years without a problem.

Regards.
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Old 11-30-2007, 12:53 PM
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As a follow-up, 0.5mm difference is very little. In fact, 1mm is roughly the thickness of a dime. So imagine 1/4 the thickness of a dime added to the outside edge of the thermostat. It is just not very much, and it is readily accommodated by the rubber gasket without any threat of damage.

Of course, some will claim this is a problem, so grind away if you must.
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Old 11-30-2007, 01:01 PM
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Good job with the pics and instructions. I have yet to do this on my 08 and with your pics I think I can do it the right way.
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  #20  
Old 11-30-2007, 01:13 PM
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Quote:
Originally Posted by bmartin9122 View Post
While I certainly understand what you are saying, I have to respectfully disagree. The t-stat is a tight fit as mentioned in the post. However, forcing it is not required. Just "shoe-horn" it in, and everything will be fine.

I ran my 06 Mag this way (as have many others) for 2 years without a problem.

Regards.
It's not a "tight fit" it's .5mm too large.


I've been there done that as well and it doesn't work longterm--or at least it didn't for me. Just because you can doesn't mean you should. It only takes a few minutes/seconds to do it the right way, it's simply not worth the risk of being stranded on the side of the road watching coolant pour out of the housing/gasket.
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