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Drilling the thermostat?? Drilling the thermostat??
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Old 02-06-2008, 04:35 PM
Bob In Ct's Avatar
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Holes in thermostats are not there to replace the bypass, but rather to let any air trapped in the top of the water jacket escape. Coolant that leaves via the thermostat heads back to the radiator and is replaced by cold coolant. Water entering the engine via the bypass is warmer and allows the block to attain a more consistent temperature.

Just my $0.02

Bob
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