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-   -   Fuel regulator suggestion (https://classracer.com/classforum/showthread.php?t=84976)

James Perrone 06-01-2023 10:58 AM
Re: Fuel regulator suggestion
 
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

j gardiner 06-01-2023 04:41 PM
Re: Fuel regulator suggestion
 
Quote:
Originally Posted by Henrys Toy (Post 681093)
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
I am at 30 seconds for 1 gallon of fuel after the regulator.

Mark Ugrich 06-01-2023 07:40 PM
Re: Fuel regulator suggestion
 
Quote:
Originally Posted by Henrys Toy (Post 681093)
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



I really don’t think there is such a thing as overkill for anyone of us that has to run an O.E.M carb. Most of the float bowls are designed for a production engine and are too small.I’ll be running a large weldon pump,5/8” fuel line and weldon regulators at both ends of the car.

SSDiv6 06-02-2023 10:37 AM
Re: Fuel regulator suggestion
 
If running a Quadrajet, the best is the Product Engineering PE 9000 fuel regulator system.

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

Duane Eiskant II 06-02-2023 12:39 PM
Re: Fuel regulator suggestion
 
Jeff -

I use the magnafuel pump and regulator, -12 from cell to pump and -10 from the pump to the carb. I have the bypass pressure turned up to 50psi and the regulator set at 7.2 with this set up ive never had any fuel delivery issues

Alan Nyhus 06-02-2023 04:50 PM
Re: Fuel regulator suggestion
 
On my 327 Stocker engine, I moved to the Quick Fuel 30-803QFT regulator....basically a physically bigger and improved version of the traditional Holley regulator. With this regulator and bypassing back to the tank (bypass line submerged in the fuel tank), the pressure was quite a bit more stable.

https://www.holley.com/products/fuel...arts/30-803QFT

You can see it in this pic during a dyno session:
https://i.imgur.com/mZwNBhLh.jpg

Hope this helps. :) -Al

Stickshift 06-02-2023 08:39 PM
Re: Fuel regulator suggestion
 
Mallory 4 port regulators are on sale right now. Under 80 bucks. It’s a bypass regulator. I stopped screwing with all that other stuff years ago.


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