Engine Running Hot

Discussions related to engines, transmissions, rear axles, suspension & steering.
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Engine Running Hot

Post by merletanner » Sun Jul 07, 2019 7:11 pm

Has anyone had experience in running a 356 cu engine without a thermostat to lower the running temperature? I have a 1947 Packard and it consistently runs around 200 F with a 180 F thermostat. The block temp measured with a IR guns is around 212 F.

Dave Czirr
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Location: New Jersey

Re: Engine Running Hot

Post by Dave Czirr » Mon Jul 08, 2019 4:47 am

Removing the thermostat is NOT the solution for a car that's overheating. If anything, it may run hotter as the water will pass thru the radiator faster, not allowing enough dwell time for it to cool. As long as you have a IR gun, how about some readings (with the thermostat in place) from the radiator, left to middle to right, top to center to bottom? This will help determine if the cause of the overheating is the radiator itself, or elsewhere.

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