I bought a new electric fuel pump in july and just now got around to installing it. It was supposed to be carb. friendly and only be rated to about 9 psi.  I installed it today and it pegged my fuel pressure guage.  Question is if I get a fuel pressure regulator do I need the one with the return line or will the regulator without a return line be sufficient?

You should be fine without the return line.

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I didn't know if it would build up too much pressure and blow the fuel lines off. I did not want to find this out in the middle of the lake. I will get a regulator then and try it this weekend.Thank You!

Nope. Just a mild BBC roller cam and lifters and bored 30 over. Just didn't know it if that was too much pressure to not have a return. I have a fiberglass bow tank and don't know how I would make the return line into the tank.

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What pump did you get?

A bypass regulator will help prevent pressure creep.  If you don't have way too much pump, a standard regulator will probably be fine.

You can make your own bypass by adding a -3 fitting, with a nitrous jet installed, off of the low pressure side between the regulator and carb.  Return back to the tank and not to the suction side of the pump.

It is best to have a pump that puts out around 25PSI and regulate down at the carb/s.  This is so the pump can overcome the G-forces of acceleration working against the inertial forces of the liquid fuel trying to remain at rest.  Theoretically, if the pump is regulated to 9PSI, you will see flooding at idle and a pressure drop under acceleration.

Good luck,

Joe

Thank you Joe. Its like the holley red or blue. I just bought a regular regulator with no return and see how it goes. Now I can run fuel line from bow to stern then to the engine instead of taking the shortest route now. I'll let y'all know how it works out. The regulator I bought says its adj. from 3 to 12 psi.

The regulator you got should be fine.   The red pump shouldn't need a regulator at all.  The blue pump, yes.  If a Holley carb, 7PSI.  This is for a bow tank?  Either way try to mount the pump as low as possible, although it doesn't sound like you have any supply issues.

Why are you running your "fuel line from bow to stern then to the engine?"   The shortest clean routing is best.

Cheers,

Joe

I just got my fuel pressure regulator today is guess what?.... No instructions. Not even marked what port is in and out. Does anyone know where the in is and what ports are out.

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Ok. That settles that. Sounds simple enough. Thanks again

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Its a pro comp  and the holley carb is a 3310. Do they make a metal fuel line for the regulator in the middle and lines out both sides for fuel bowls?

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It Chinese


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I use to buy there parts but always had problems


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Hopefully the boat gods will smile upon me too at least get a few good runs out of it

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How many carbs


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