I need some help with my blowthrough carb turbo setup. I have my stock gsl-se fuel pump wired to the engine fuse, so it comes on w/ the ignition.

The problem comes in with the fuel pressure. The carb needs very little fuel pressure, the gsl-se one puts out a lot. So, i have put in a mallory 4307M rising rate pressure regulator.

It doesnt seem that it is regulating anything, as it keeps flooding my engine when i try to start the car. Regardless of what pressure setting we put on it, it seems to put through the same pressure (lots).

Some things i'm thinking are the problem:

1) Bad Mallory unit
2) Clogged fuel return line, forcing all fuel through (unlikely, we blew the return line through, didnt seem to be any restrictions.)
3) too much resistance on the return line, need to run to a new location.

What do you guys think?

I thank you for your help in advance

~Geoff

 

maybe the regulator is mounted in the wrong place???

 

Check ur float level.

 

Got it figured out. the fuel send line was screwed in too far, was making it so the valve couldnt move.

 

I thought you're supposed to use the Mallory 4309?

 

4307m deals with 2-20 psi, 4309m deals with ike 35-100 or something like that. i need it to bring it down to the 2-20 range for my application.