| Fuel
Systems
An EFI fuel
system runs at 30-45 psi. Turbocharged and supercharged engines may run as high as 100+
psi. Maintaining this pressure is very important. Maintaining adequate fuel volume
is also very important. Fuel volume is determined by horsepower. The more horsepower your
engine makes the more fuel your pump will need to supply. Inadequate fuel volume and pressure can result in engine damage.
Many fuel pumps on the market
may claim to be EFI fuel pumps, but I have seen numerous problems with a lot of them.
EFI fuel pumps have built in check valves to maintain fuel pressure with the pump
off. The reason for maintaining pressure is for short cranking times and rapid starts.
Running a pump without this check valve will cause excessively long crank times.
This can also cause a
form of vapor lock. On a warm engine, with the engine shut off, if fuel pressure drops,
this will allow the fuel to boil in the rail. Causing a form of vapor lock. This causes
long cranking times when trying to start your engine and reduced power once engine is
running.
One of the reasons that the fuel returns to the fuel tank is for
cooling. As the fuel circulates through the fuel rail it cools the rail and injectors.
Think of your fuel tank as the radiator. This is one way that the temperature in the rail
is kept down.
The fuel pump, filter and
fuel line we use and a factory Ford fuel rail will work well to around 400 horsepower. If
you plan on going above this level, you will need billet fuel rails, larger fuel lines
(1/2"), higher volume fuel pump and higher flow fuel filter. RMP can help you get the right fuel
components for your needs. Just give us a call.
Fuel System Kits Available !
|
