86 fuel pump.

[dtmilsap]

What amout of pressure does a 86 fuel pump produce?

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[xctasy]

Well over 55 psi. Its regulated down by the FPR to 39 to 42 psi. It does so by returning bypass fuel to reduce flow rate by reducing the dead head amount to each of the 8 injectors.

One of the key parts is that the fuel pump is self priming and multi staged with the Fuel Pressure Regulator trying to only reduce pressure, not flow. So Ford balanced the whole needs of the system by putting a pretty strong pressure, high flowing pump in the tank, with a return line to act like a head tank in a bathroom W/C. Instead of a ball float, it scoops a percentage of fluid out of the header tank, and instead of the atomoshperc and gague pressure of 14.7 + 8 psi, it is 14.7 + 40 psi

..5.5 times as much as a carb, and much more unregulated. This allows bank or sequentual injectors to really atomise the fuel in the intake runner on the back of the valve and this gives the brilliant fuel injected warm up.

[dtmilsap]

Well over 55 psi. Its regulated down by the FPR to 39 to 42 psi.

Then I could use it for holley sniper. Holley requires 58.5 to 60 psi.


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