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-   General Q & A (https://www.offshoreonly.com/forums/general-q-20/)
-   -   Guys with BOOST, what mech fuel pump?? (https://www.offshoreonly.com/forums/general-q/260424-guys-boost-what-mech-fuel-pump.html)

ezstriper 08-19-2011 06:12 AM
couple of things, make sure carbs are for BLOW thru, not just blower carbs..not the same !! put a switch on the dash to be able to turn off fuel pump as a override(trust me) also make sure you run a boost gauge and a fuel pressure(electric) in the dash...you will need to do a return to the tank...can use a diesel fuel tank sending unit that has the fitting already there...I have done all these...

ThisIsLivin 08-19-2011 09:06 AM
Originally Posted by Fenderjack (Post 3482441)
Talked to PC, they said there is no difference between running the carb in the box or the hat.. As it seems, I am not going to spend 5$$$ on a mechanical pump, as most of them are good to about 8psi, I will be well above that. So looks like it will be a electric pump.. Not thrilled about it, but if it is the only thing that will work, then what the hell...


John jr
The Stewart mechanical pump will handle up to 1875hp in a blow through arrangement. I've seen them used in EFI applications with pressure up to 75psi and 450gph.

Fenderjack 08-19-2011 03:31 PM
Originally Posted by MILD THUNDER (Post 3482448)
You can always tie a warning buzzer or alarm to come on in the event you lose pump pressure.
Yes have already taking this into consideration.. Thanks :drink:

Originally Posted by ezstriper (Post 3483104)
couple of things, make sure carbs are for BLOW thru, not just blower carbs..not the same !! put a switch on the dash to be able to turn off fuel pump as a override(trust me) also make sure you run a boost gauge and a fuel pressure(electric) in the dash...you will need to do a return to the tank...can use a diesel fuel tank sending unit that has the fitting already there...I have done all these...
Boat will have a FP gauge, AFR, boost gauge.. I have a few gm bucket hats, with return ports in, so that should not be a issue at all, for the return.. Yes very well aware about the diff in blow/draw through carbs..

Originally Posted by ThisIsLivin (Post 3483233)
The Stewart mechanical pump will handle up to 1875hp in a blow through arrangement. I've seen them used in EFI applications with pressure up to 75psi and 450gph.
Going to check into that pump also.. Thanks for posting up..

Thanks guys


John jr


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