Automotive fuel pressure regulator has a simple function; to deliver fuel to electronic fuel injection system or the carburetor. However, there is a wide range of fuel pressure regulators when it comes to fuel type, material, price and other options. Among other kinds, there are fuel pressure regulators for all types of motorsports and other street performance, including circle track racing.
What is a fuel pressure regulator?
In short, a fuel pressure regulator is a metering device. It functions to control the flow of fuel to a given method of fuel delivery such as fuel injection or a carburetor. The body of the regulator has various parts that are of great importance to the performance of the regulator. These parts include a spring or multiple springs, a seat, a diaphragm and a hardware to hold and adjust pressure. The type of parts can be a standard across the board, but the quality of the parts can be a determinant of whether a part is durable or isn’t durable.
A street stock with a little two-barrel carb has different needs compared to an outlaw drag car with three phases of nitrous. There more are different options for everything in between. It’s a fact that as your fuel system requirements get more complicated, horsepower moves higher, and fuel get more exotic. You’ll therefore require a better, more costly fuel pressure regulator.
Choosing the best fuel pressure regulator
Making a decision on a regulator will largely depend on your specific needs. A company like Aeromotive offers many different fuel pressure regulators, with different configurations and options. These choices will be based on the number of ports you need, whether you run a curb or EFI, what fuel you run and whether you want to run a returnless, or a return style fuel system. To start it all out, let’s take a look at the basic concepts of fuel delivery so that we can have a solid general understanding of how everything works.
In all fuel systems, there are some basic components; the fuel cell or tank, fuel pump, regulator, lines, fuel rails or carb and injectors. Fuel systems fall into two basic categories: return or dynamic and deadhead or static type. Static systems mainly used with carburetors deliver fuel “on demand.” The fuel pump (electric or mechanical) will deliver about 7 pounds of pressure to the carburetor’s needle and seat. Following consumption of the fuel by the engine, float drops and the needle valve opens. This results to pressure reduction which causes the bypass in an electric pump to close, or the diaphragm in a mechanical pump to start moving again, building the pressure back to seven psi. Aeromotive adjustable fuel pressure regulator is used to control pressure in this system.
The other option of maintaining consistent fuel levels in the carburetor is a return-type or a dynamic system. The benefits include increase in pump to horsepower ratings, longer pump life and quieter pump operation. In a dynamic system, fuel flows through the whole system at the pressure determined by a regulator-be it 60 psi for EFI or 7 psi for a carburetor.
The type of fuel you use in your care will directly affect the choice of your regulator. For example, Aeromotive diesel fuel pressure regulator is used in race cars that are run in diesel. If you use the electronic fuel injection system, Aeromotive A1000 fuel pressure regulator becomes the most suitable option for you.
Installation instructions for Aeromotive fuel pressure regulator
It’s important to note that Aeromotive system components are illegal for sale or application on emission controlled motor vehicles. A qualified automotive technician must mount the Aeromotive regulator in a suitable vehicle’s engine compartment. The supplied mounting bracket is always used as a template. The regulator and bracket is mounted to the vehicle using two # 10 screws, lock washers and nuts. Once the regulator is successfully installed, a suitable fuel pressure gauge is attached to the 1/8 NTP port.
To sum it all, Aeromotive pressure regulators are designed for medium to high horsepower applications. These regulators features Aeromotive’s superb pressure control, high-flow design, and legendary durability. With base pressure adjustable from about 40-75 PSI and fuel pressure rising on 1:1 ratio with boost, these regulators are excellent. At the track and on the street, this regulator has logged more laps, miles and passes than any other pressure regulator in the world.