01-12-2005, 07:47 PM
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Senior Club Cobra Member
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Join Date: Jun 1999
Location: Fallbrook, CA USA,
CA
Cobra Make, Engine: Porsche 928 S4
Posts: 739
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Not Ranked
Hi Folks,
First I know nothing about NOS systems. Or for that matter drag racing which is where one would apply this system.
But, I have small problem with the pump size thing.
The question was the size of pump with a 535 hp 460 engine with NOS. (Remember, I know nothing about NOS.)
OK. Here goes. Lets assume that the above engine is running on the rich side at .48 lbs per hour per horsepower.
Therefore: 535X.48=256.8 lbs of fuel per hour at peak output.
Therefore the gallons per hour required is: 256.8 lbs divided by 6.5(What gasoline weighs)=39.50 gallons per hour.
So, my question is this.
Why does one need a 110 gph pump?
Of course there is the question of: are the pumps guys telling the truth?
Or are your fuel system pressure drops so severe that you are not getting the output assumed.
I would really like the answers to the above. Help me out here.
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