Oil system myths

SGBARRACUDA said

Not sure about watts and amps. But a HV pump over a standard pump has taller gears and therefore has the capability pump more GPM. Now weather it has the capability to exceed supply or in the case of a engine the supply of oil has been a argument by people since forever.

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I’m a bit stumped over the cavitation issue, because I’ve never seen it with a water pump or an oil pump.

I know I’ve heard that cavitation with a water pump is often caused because the suction side of the pump can’t keep up with the output of the pump.

I *think* I’ve seen cavitation on a belt driven fuel pump...but...I was never sure about that, and in the end I felt like the vent was too small but the experts say that it was cavitation and not the vent.

I didn’t have time to sort it out so I opened up the vent AND increased the hose diameter on the suction side of the pump, and it went away.

Which one fixed it? I have no idea.