Quote:


It would be best if the pump was no higher than the tank. Having said that, if you must mount the pump higher, you'll have better luck with a gerotor style pump because the internal clearances are tighter so it will "suck" (prime) better (at least until the pump has substantial internal wear). However, the same tight clearances that make gerotor pumps prime better also makes them more susceptible to debris. Use a large 40 micron filter before a gerotor pump.




Robb,
This is what I was thinking. The oil pump in in the BBM engines are gerotor type, and they pull oil up from the pan which is of course lower.

I want to look at all options, before making a change. The tank is 12" tall, 7.5" is level to the pump inlet. So I guess for now if I keep the tank/cell filled above that I will not have to reprime the pump!?!?
Thanks for your input,
Mark



Correct. If you keep the level of the fuel in the cell higher than the inlet of the pump, it should prime.

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