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Old 05-10-2013, 12:02 AM   #15
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Join Date: May 2010
Location: Ft. Worth
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Default Re: Thermostat -= Yes or No

Originally Posted by steve s View Post
Make sure that it has a 1/8 inch bypass hole drilled in the flange, so there is enough flow to allow the stat to sense the coolant temp and to prevent localized hot spotting in the head during warmup.

Some of us drill two bypass holes, just to be sure. Slows warmup somewhat but if you've ever seen explosive vaporization, you won't mind.

Some of us drill 3
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