Reply to "crank damper"

George PAdmin.

quote:

Originally posted by Robbie:

... why the overdrive water pump pulley ...

The Pantera cooling system has two flaws, (1) insufficient coolant flow (especially at low rpm) and (2) air collection in the radiator. The overdrive pulley spins the coolant pump faster, increases coolant flow, goes a long way towards alleviating the first problem.

The Pantera cooling system presents the coolant pump with way more head than what it was designed to cope with. The pump operates way outside of its design parameters. I suspect there is little to no coolant flow at idle. The pulley spins the pump fast enough at idle to get the coolant pump higher into its "pump speed verses flow curve", to a point where coolant actually begins to flow. Folks report 5°F to 10°F drops in temperature.

8/4/181:52 PM

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