Fuel regulator suggestion

[j gardiner]

I currently have a Holley black pump and the standard Holley regulator. I have a Quadrajet carburetor. The pump seems fine , but what would y’all suggest for an upgrade on the regulator?

[Ralph A Powell]

Just remember the more surface area the regulator has the smoother the regulator will bee.

[Mike Pearson]

I have a similar set up as you do. I have a Magnafuel 2 port regulator on my car right now. It works good. That being said I hear the the Product Engineering bypass regulator is supposed to be a big improvement for the Q jets, So if you plan to upgrade you might take a look at the Product Engineering regulator.

[j gardiner]

I have run my same setup for years with no issues, but now I have the same motor in a heavier car with fresh air induction opposed to a lighter car with a flat hood. I now seem to have a fuel supply issue. I am hoping to get some more flow with a larger-better-less restrictive regulator. The Holley is 3/8 in and out, not sure if I should go 1/2 in 3/8 out or 1/2 in and out.

[Jim Kaekel]

Jeff: We have Aeromotive on my Olds and my son's Camaro. His is a bypass and mine's a deadhead style. With a Q-jet, I run -10 from the cell to the regulator and -8 from the regulator to the carb. If I had to do it all over again, I would consider the Product Engineering unit for Q-Jet like Mike suggested.

[j gardiner]

Jim, I am glad you replied. We have the exact same combo. Did you ever run the standard Holley regulator and did you ever have any fuel issues with that setup?

[Henrys Toy]

Originally Posted by j gardiner

I currently have a Holley black pump and the standard Holley regulator. I have a Quadrajet carburetor. The pump seems fine , but what would y’all suggest for an upgrade on the regulator?

Good morning to all,
A few seasons back I switched to a Magna Fuel pump and the Bigger Holley Regulator, I think the part number is #704 and it has a green colored diaphragm which is alcohol resistant. I have 5/8" fuel line from tank to regulator and 1/2" from regulator to carb ( Q-Jet). Checking fuel flow at the carb fitting I can pump 2 gallons of fuel in 30 seconds set at 6 lbs. of pressure. I hope that helps, the bigger regulator has larger diameter orifices internally which should help for fuel flow.
This is probably over kill in my stocker but might help your combination.
Have a Good Day.

Respectfully,
Henry Kunz 1534 H/SA

[Ralph A Powell]

What is your pressure befor regulator? You need 7.5 lb of pressure per G’s of acceleration just move the fuel to the regulator!

[James Perrone]

I’ve been struggling with my car all year thinking it’s the QJet
Put 5 carbs on in 3 races finally I figured out
It can’t be every carburetor is bad I have a4 port aeromotive regulator
Tested fuel pump it’s fine
Never had a problem with the old Mallory regulator
Will try it next weekend Lebanon valley
Areomotive. Never again

[SSDiv6]

If running a Quadrajet, the best is the Product Engineering PE 9000 fuel regulator system.

https://product-engr.net/products/hi...ulator-systems