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Old 05-09-2019, 07:46 PM
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Al Schober Al Schober is offline
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My experience is different from Joe's.
I added the heat exchanger, found out I needed a new coolant pump for the glycol (old Oberdorfer was leaking, installed the Moyer pump) and ran for several years with only one instance of overheating - forgot to open the raw water hull valve! This is with no thermostat installed. I had a bypass valve installed, but don't recall the degree of throttling - might have been closed. Anyway, running temps never got above 120F.
Should also add that I moved the temp gauge to the outlet of the manifold. The location at the fwd end of the head seemed to be reading head temperature rather that water temperature.
Did some research on head temperatures and found that the only folks monitoring head temp are the ultralight aircraft folk, air cooled. Their limits on head temp are on the order of 400-450F.
Kinda sorry to muddy the waters with temp sensor location, but I think it's important. I wanted to know the water temperature.

Last edited by Al Schober; 05-09-2019 at 07:50 PM.
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