i converted from a sbc to a ls1 6.0, and along with it I lost my mechanical fuel pump. I have a barry grant electrical pump installed now, but because my fuel tank is located in the bilge with no where else to put it (aluminum sprint boat), i have nothing but problems with the electric pump.
if it gulps any air when the tank gets low, the only way i can get it to prime is to run the pump and crack open the outlet side of the pump, which inevitably sprays fuel inside the boat, only a foot or 2 away from my hot engine. i never had an issue with mechanical pumps and have owned this boat for 10 years w/ at least 5 different engine combinations.
on to the real question, i have an idea to fabricate a belt driven "box" with a lopped off camshaft from a sbc and run my old mechanical pump off the fuel pump eccentric. anybody ever done something similar to this? i have spent far too much money on this project already, and have more fabrication and machining experience than money at this point.
i have seen mercruiser type water pumps that had a mechanical pump drive on them, but they seem to go for over $300. any thoughts or ideas on this?