fuel pump Q

[TT/Ameasap]

Is there a way to find out if you have an upgraded fuel pump?
Would you just turn the fuel pressure up and watch gauge?
I dont know if i really have one or not!

Thanks,
Bo

 

[Black Car]

Only way for sure is to drop the fuel tank and look at the pump.
I know that isn't wanted you wanted to hear.

A way to see if you have enough pump for now is to have a gauge mounted where you can watch it while you make a run under boost. If the pressure maintance the differental then you should be "OK".

Gary

 

[Ormand]

Yeah, what he said.

Like Black Car said, you can tape your fuel pressure gage to the windshield, and run it up through third gear. If the pressure matches the initial setting, plus boost, you've got enough. Also, you can pull the Schrader valve, and hook up a hose there. Then measure the "free" fuel flow by turning on the pump, and running the flow to a catch can while you time it. An upgraded pump should flow about one gallon per minute, maybe more if its a Walbro 340. A stock pump will flow just over a half gallon per minute. (0.6 gpm, or 36 gal/hr, I believe)