Ready to explode another myth about the GMC motorhome th at really worries people

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New member
Feb 8, 1998
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I thought the water pumps are centrifugal pumps, therefore, regardless of
the direction the impeller spins, coolant still moves in the same direction
- - from the center outward. If this is the case and Leigh Harrison is
claiming reverse flow for his serpentine belt system, then he's spinnin a
myth of his own! I've still got my old core at home and I'll take
another look tonight.

Patrick

> If the pump runs backwards the radiator will run at greatly reduced
> efficiency ie;reversed flow thru the thermostat, reverse
> water flow thru the
> radiator etc.