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Old 09-28-2011, 05:56 PM   #61
Pilotdave
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Join Date: Oct 2010
Location: Grafton, MA
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Default Re: UPDATE....Ok so a brand new radiator and it still runs hot

Quote:
Originally Posted by TinCup View Post
Using a laser temp gauge I was curious as to temps on each cylinder looking for a hot spot. I aimed it at the bottom hose just where it connects to the water pipe. It read about 150 degrees. When I pointed it directly at the inlet neck on the side of the motor it read almost 185 degrees. I would have expected it to be closer to the 150 at the bottom of the radiator.
I suspect that it makes sense for you to get 185* at water inlet on block vs 150* at bottom of radiator, given that you were getting around 185* at outlet from block. It seems reasonable that the block would be (+/-) at one temp with the radiator cooling the water from the block temp to about 150*. I have no expert knowledge of this - just a guy trying to think about your problem. HTH
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