Fuel pressure help

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06-28-2008, 04:03 PM

smythge

4th Gear Member

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Join Date: Oct 2006

Location: WI

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Fuel pressure help

I am currently running a carbureted system with NOS super powershot system. I need some help with my fuel pressure. I am running a holley black fuel pump 150 gph with 2 seperate regultors 1 for the carb and one for the NOS. I am runnin an 8an fuel line from the tank.on the"in"port of thecarburetor regulator Ihave a teethat splits off to a 6an line running to the NOS fuel regulator. I have one side of the NOS regulator plugged the other side is running a 4an line to NOS fuel solenoid. The regulator is holley and no matter how I adjust it goes over 10psi. My questions are: does reducing the line increase the pressure?Is the regulator faulty? Attached isare a couple pics of the setup

06-28-2008, 04:07 PM

aode08

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Join Date: Oct 2005

Location: Ohio USA

Posts: 4,616

RE: Fuel pressure help

get a regulator regulated adjustable from (ex 2psi - 20 psi etc), sounds like the regulator YEP[8D]

06-28-2008, 04:10 PM

smythge

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Join Date: Oct 2006

Location: WI

Posts: 1,173

RE: Fuel pressure help

The regulator is adjustable, just doesn't seem to be adjusting

06-28-2008, 04:13 PM

aode08

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Join Date: Oct 2005

Location: Ohio USA

Posts: 4,616

RE: Fuel pressure help

its faulty, i had a pump pushing more than yours and could adjust it down to 2 psi

06-28-2008, 05:58 PM

dfw810

1st Gear Member

Join Date: Jan 2007

Posts: 53

RE: Fuel pressure help

I'd say it's faulty. You should be able to turn it down more.

06-28-2008, 06:07 PM

aode08

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Join Date: Oct 2005

Location: Ohio USA

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RE: Fuel pressure help

think of it as the valve on your garden hose

06-28-2008, 09:09 PM

mjr46

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Join Date: Jun 2007

Location: West Virginia

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RE: Fuel pressure help

Quote:

ORIGINAL: smythge

I am currently running a carbureted system with NOS super powershot system. I need some help with my fuel pressure. I am running a holley black fuel pump 150 gph with 2 seperate regultors 1 for the carb and one for the NOS. I am runnin an 8an fuel line from the tank.on the"in"port of thecarburetor regulator Ihave a teethat splits off to a 6an line running to the NOS fuel regulator. I have one side of the NOS regulator plugged the other side is running a 4an line to NOS fuel solenoid. The regulator is holley and no matter how I adjust it goes over 10psi. My questions are: does reducing the line increase the pressure?Is the regulator faulty? Attached isare a couple pics of the setup

2 regulators??? you do know that the holley regulators have two outlet ports right?? the second regulator is unnecessary ...ALL YOU NEED TO DO IS RUN THE the 2nd outlet port to the fuel selonoid and when running NO2 just bump the pressure to overall system up to 6.5 psi depending on shot running..I too am running the superpower shot system and I run 6.25 psi with the 100 shot nd no probs yet doing it the way I mentioned and I can monitor fuel pressure and bottle pressure on every run out my windshield

btw your motor looks good!!