1967 w/5.0 motor mounts - Ford Mustang Forum
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post #1 of 3 (permalink) Old 07-28-2011 Thread Starter
Pacus90gt's Avatar
Joined: Nov 2010
Location: Boynton Beach
Posts: 15
1967 w/5.0 motor mounts

Hi everyone , i been working on my 1967 for a year so far...
Im doing a full restomod not to crazy but with a few good mods .
I have a holly red fuel pump with a regulator , once i mount the return line to the tank where on the front i conect the return line , to the regulator (wich brand and kind ,model etc) im a lil lost and everytime i start the car and its in idle i can hear the pump dragin because its building too much pressure , folow...... because no return line . . . ..
If anyone out there have a solution let me know . . . . . .
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post #2 of 3 (permalink) Old 07-28-2011
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Joined: May 2011
Location: spokane
Posts: 324
Holley red fuel pumps only put out 5-7 psi. You dont need a regulator with it. Most carb needles will hold 7 psi without being unseated by the pressure. Your Holley pump has and internal regulator piston and spring that diverts fuel back to the inlet side of the pump when 7 psi is reached. You do not need a regulator or return line. And they are usually noisy and will sound like they are bogging down when max pressure is reached.

My wife calls me a transplanted redneck. All I got to say is. Hey Yall watch this!!!
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post #3 of 3 (permalink) Old 07-28-2011
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Joined: Feb 2010
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Pacus90, that can't be your car in your Avatar pic, there are no hills that steep in Florida to get that kind of air!!!

I don't know why, but it seems hard to make a quiet fuel pressure regulator. My Dad has a 1950 Shoebox, and the regulator is louder than the McCullough supercharger! It is not in a good place though, right on the firewall. He intends to move it, but something always gets done first.

1965 Poppy Red Mustang Convertible: with stock 95 GT 5.0 EFI engine and various other modern upgrades
2014 Mustang GT: unmodified at this point
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