Originally posted by BrianB:
If you look into the thermostat housing,there is a bypass opening about the depth of the stock thermostat below the thermosat seat. The stock thermostat has a plate at the bottom that closes the bypass when it is fully open.Using a gutted stat,without a plug,hot coolant just continues to circulate through the engine,causing it to overheat.Just putting a new stat in may do the trick,and is better if the weather is cold to assure that coolant temps reach 180(at speed) for the fuel mixture to lean properly.
B
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