Fuel regulator suggestion

j gardiner · 05-30-2023, 06:11 PM

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 · 05-31-2023, 08:45 AM

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

Mike Pearson · 05-31-2023, 09:10 AM

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 · 05-31-2023, 11:24 AM

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 · 05-31-2023, 01:30 PM

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 · 05-31-2023, 02:00 PM

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?

GTX JOHN · 05-31-2023, 02:35 PM

I run a Holley regulator on most of my stockers.
Cheap and easy to service when needed. Never
had fuel deliver issues. Better than I can say for my full
Aeromotive setup on the Superstocker! It drops from 6.5
to 3 in the last few hundred feet no matter what I change on it!

Jeff Stout · 05-31-2023, 07:24 PM

I believe I have a brand new automotive 2 port regulator. Can check on saturday

Henrys Toy · 06-01-2023, 08:18 AM

Quote:

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 · 06-01-2023, 08:47 AM

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!

05-30-2023, 06:11 PM	#1
j gardiner Member Join Date: Jul 2006 Location: waldorf Posts: 220 Likes: 14 Liked 53 Times in 28 Posts	Fuel regulator suggestion 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?

05-31-2023, 08:45 AM	#2
Ralph A Powell Member Join Date: Oct 2017 Location: Bay City Texas Posts: 387 Likes: 2 Liked 225 Times in 136 Posts	Re: Fuel regulator suggestion Just remember the more surface area the regulator has the smoother the regulator will bee.

05-31-2023, 09:10 AM	#3
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,443 Likes: 613 Liked 1,916 Times in 574 Posts	Re: Fuel regulator suggestion 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. __________________ Mike Pearson 2485 SS

05-31-2023, 11:24 AM	#4
j gardiner Member Join Date: Jul 2006 Location: waldorf Posts: 220 Likes: 14 Liked 53 Times in 28 Posts	Re: Fuel regulator suggestion 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.

05-31-2023, 01:30 PM	#5
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,226 Likes: 133 Liked 529 Times in 107 Posts	Re: Fuel regulator suggestion 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. __________________ Jim Kaekel 3836 STK

05-31-2023, 02:00 PM	#6
j gardiner Member Join Date: Jul 2006 Location: waldorf Posts: 220 Likes: 14 Liked 53 Times in 28 Posts	Re: Fuel regulator suggestion 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?

05-31-2023, 02:35 PM	#7
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: Fuel regulator suggestion I run a Holley regulator on most of my stockers. Cheap and easy to service when needed. Never had fuel deliver issues. Better than I can say for my full Aeromotive setup on the Superstocker! It drops from 6.5 to 3 in the last few hundred feet no matter what I change on it! __________________ John Irving 741 Stock 741 Super Stock

05-31-2023, 07:24 PM	#8
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,486 Likes: 66 Liked 704 Times in 281 Posts	Re: Fuel regulator suggestion I believe I have a brand new automotive 2 port regulator. Can check on saturday

06-01-2023, 08:47 AM	#10
Ralph A Powell Member Join Date: Oct 2017 Location: Bay City Texas Posts: 387 Likes: 2 Liked 225 Times in 136 Posts	Re: Fuel regulator suggestion 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!