fuel pressure help

[castelro]

I am coverting from efi to carburetor. I have a 35 psi electric fuel pump in the gas tank. I know carb's can only take about 7-8 psi max. If i pipe a holley pressure regulator in my supply line that regulates to 7-8 psi, will this ruin my fuel pump due to the fact that it will still be trying to pump 35 psi but won't be able to b/c I'm only letting 7-8 psi through??

any info would be great.

[SaabJohan]

Pumping with a lower pressure isn't a problem, it's when you want higher pressures the problems start to come.

[MagicRat]

Originally Posted by castelro

I am coverting from efi to carburetor. I have a 35 psi electric fuel pump in the gas tank. I know carb's can only take about 7-8 psi max. If i pipe a holley pressure regulator in my supply line that regulates to 7-8 psi, will this ruin my fuel pump due to the fact that it will still be trying to pump 35 psi but won't be able to b/c I'm only letting 7-8 psi through??

any info would be great.

Most EFI pumps are designed to work with a pressure regulator. Without it, they will build 40 or more PSI. Thier regulators shunt excess fuel back to the tank in a return line.
Try a system like that.
The alternative is to unplug the original pump and just leave it in the tank. Use a carburetor type fuel pump, either in line electric or a mechanical one on the engine block. This will suck fuel through the disconnected pump in the tank quite happily. I have done this arrangement several times, with great success.