05-10-2013, 12:02 AM
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#14
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Senior Member
Join Date: May 2010
Location: Ft. Worth
Posts: 1,006
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Re: Thermostat -= Yes or No
Quote:
Originally Posted by steve s
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.
Steve
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Some of us drill 3 
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Cowtown A's
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