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Loose Nut on the Wheel
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Discussion Starter #1
Hey guys, I trying to figure out how to setup my NOS system for next year and figured that I would bounce a question that came up.

I looking at putting a Super Powershot system on my BBC and would rather run a single fuel system. My thought was to run 130 gph Holley/Edelbrock mechanical fuel pump, run it through a Fram HPG1 fuel filter, then up to a T fitting. On each side of the T, run a separate fuel regulator ( one for the carb, one for the fuel solenoid ). Can anyone see any problems with this setup?

Other info:
850 Holley carb
454 BBC turning 6500
600hp on motor
Spraying 100-150 shot
 

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189 Posts
There is nothing wrong with doing it that way. As long as you have a good fuel pump sounds like you do. I'm setting up my boat with a big shot 225hp system i will be using a single fuel pump that flows a 130 GPH 15 psi to BG 4 port regulator to feed the Carb and the fuel solenoid regulated pressure set to 6 to 7 PSI for both carb and nitrous.
 

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mo balls than $cents$
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11,734 Posts
Hey guys, I trying to figure out how to setup my NOS system for next year and figured that I would bounce a question that came up.

I looking at putting a Super Powershot system on my BBC and would rather run a single fuel system. My thought was to run 130 gph Holley/Edelbrock mechanical fuel pump, run it through a Fram HPG1 fuel filter, then up to a T fitting. On each side of the T, run a separate fuel regulator ( one for the carb, one for the fuel solenoid ). Can anyone see any problems with this setup?

Other info:
850 Holley carb
454 BBC turning 6500
600hp on motor
Spraying 100-150 shot

the pump should handle it but you need to get a return style regulator to do it safely the way you're trying to. get a aeromotive 13202 regulator and run the carb and nitrous offa it. deadhead style regulators don't give the headpressure volume nitrous needs. you may start out at 6psi when you hit the nitrous cause pressure has creeped up, then it'll go down to 4psi:)sphss with the bypass style regulator you won't have that kinda pressure creep that can melt a motor down:)st
 

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Loose Nut on the Wheel
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426 Posts
Discussion Starter #4
the pump should handle it but you need to get a return style regulator to do it safely the way you're trying to. get a aeromotive 13202 regulator and run the carb and nitrous offa it. deadhead style regulators don't give the headpressure volume nitrous needs. you may start out at 6psi when you hit the nitrous cause pressure has creeped up, then it'll go down to 4psi:)sphss with the bypass style regulator you won't have that kinda pressure creep that can melt a motor down:)st
Ok, so run a standard reg on the carb side and a bypass on the nitrous side?

Is there any problem with run a bypass reg on a mechanical pump? (just never heard of it)
 

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outboard or inboard steering??? if it has inboard steering and when you get to a power level that it wants to kick the tail up well lets say all new steering problem.

sorry not a hijack just giving you a heads up as you up the hp with nos hydros can be a handfull without enough rudder @speed when suddenly the tail gets loose.
 

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Loose Nut on the Wheel
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426 Posts
Discussion Starter #6
Inboard steering, and I agree. We have already blown the tail with a 11 1/4 x 17 cleaver. It went strait but had to put a half turn of left rudder in it.

We have extended the rudder 1 1/2 inches to give it more control surface in the water. If that doesn't work, I will put a daycruiser rudder under it.
 

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put a outboard clamshell steering system on it over the winter if it were me. if you get put in the left lane you may end up in your fellow boat racers lane in a hurry. if you let off to correct and oversteer then things can get harry fast.
clever props are made to blow the tail,i would run a flat style prop until i got the clamshell system.

also as im sure you know every power level has it's own new set of problem's to overcome and this is one of those been there done that kind of things.not knocking you or your ride just want you to be safe as possible as you step up the hp.
 

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Loose Nut on the Wheel
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426 Posts
Discussion Starter #8
Havasubyou - It's all good! I would rather you say something about your experience than have to learn about it the hard way. That way I know what I am getting myself into when I really f-up. :D

I would love to be able to convert to rear-steer, but it is not in the budget this winter. We will be testing the boat extensively before the first race in June. If it won't behave, the flat-bottom prop will go back under it.

Now, back to the subject on hand:

Is there any problems with running a by-pass reg with a mechanical fuel pump?
 
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