Quote:
Originally Posted by FF
Many keel coolers require a bypass thermostat in the circuit.
This is installed between the cooler intake and discharge.
On a vehicle the radiator is sized to drop the coolant temp only about 20feg F.
A keel cooler , even here in FL will have the return water far colder than the engine needs.
About $150 -$200 or so, cast iron is fine as the coolant is antifreex , so wont cause rust.
A 180F unit will probably have the engine at 180 all the time.
The internal thermostat helps the engine warm up but will not compensate for too cold return water.
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This makes sense but I am having trouble actually imagining the plumbing. Would this be a normally open thermostat in the bypass?