Fuel Pump Psi ???
08-21-2003, 06:00 PM
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Fuel Pump Psi ???
Does anyone know of high psi (60+) fuel pumps??? I don't care what type of car, year, make or model, just high psi.
Also, can you use a lower psi pump with just a high psi fuel pump regulator??? i.e. 40 psi pump with 60 psi regulator???
Also, can you use a lower psi pump with just a high psi fuel pump regulator??? i.e. 40 psi pump with 60 psi regulator???
08-22-2003, 03:44 PM
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Try a Weldon 2025. It is bullet proof and will flow enough for 1200 hp. That's about 3 of my cars
Alan C.
Alan C.
08-22-2003, 04:00 PM
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Cost is also an issue. I am doing a project with it so looking to keep it under 100$.
Is it possible to have say a 50psi pump and use a high pressure regulator to get it to 75-100psi???
Is it possible to have say a 50psi pump and use a high pressure regulator to get it to 75-100psi???
08-24-2003, 06:35 AM
#7
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The thing with fuel-pumps is that there's a crisscross function of pressure vs. flow. Pressure is really the max-pressure rating as determined by the FPR. So for a sample pump, it may have max-pressure and max flow-rates as follows:
100psi = 50gpm
75psi = 75gpm
50psi = 100gpm
This is also one of the reasons why increasing fuel-pressure in order to avoid having to replace injectors is a fallacy at a certain point. Because the higher you increase pressure, the lower volume you'll get delivered from the pump.
So with your project, you have to add in the flow-volume requirements as well.
100psi = 50gpm
75psi = 75gpm
50psi = 100gpm
This is also one of the reasons why increasing fuel-pressure in order to avoid having to replace injectors is a fallacy at a certain point. Because the higher you increase pressure, the lower volume you'll get delivered from the pump.
So with your project, you have to add in the flow-volume requirements as well.
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08-24-2003, 02:30 PM
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Actually low volume is fine. 
All I need is high pressure. Anyone guessed the project yet???
hint: I just need a high pressure, very fine mist.
All I need is high pressure. Anyone guessed the project yet???
hint: I just need a high pressure, very fine mist.
08-25-2003, 06:00 AM
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The Bosch .044 fuel pumps are rated ar 650 H/P. They were designed to withstand the rigors of racing. It's been a few yrs. since I bought the 2 for the 951. I believe they run between $350.00-$500.00. Contact Jon Milledge @781-834-3932. I needed 2 due to fact that turbos run rich and fuel pressure was dropping on the dyno w/1 pump, above 5000. Especially for those cold mornings.
08-25-2003, 11:17 AM
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Yep, water injection. Possibly dual stage. So I need high psi, but low volume is ok.
Seen a couple on ebay that look good.
Seen a couple on ebay that look good.