ELECTRIC FUEL PUMP
Since there is no fuel pump eccentric on the E303 cam, an electric fuel pump is the only option. I blocked off the passage on the engine block with a plate for the mechanical fuel pump, and installed a Carter rotary vane pump. This thing is noisy, but it works. The good thing about it is that I can hear the pump when it turns on before the engine is started, but once the engine is running, the exhaust blocks out this noise. This car is loud and could not be quiet if it wanted to.
The picture to the right shows the pump mounted on the underside of the vehicle. To try to get the pump to be higher than the fuel tank and away from exhaust heat, I mounted it high on the wall of the spare tire well (hatch area) on the passenger side.
Edelbrock carbs like 5.5 psi of fuel pressure. Installing a fuel regulator and gauge is a great idea. Do not trust the gauge after it gets warm though. After running for a length of time, the gauge reads low pressure, but there is no hesitation or fuel starvation. There are fuel filters between the tank and pump, and before the regulator. A fuel return line to the tank is not necessary, since fuel can backflow through the pump and back to the tank when the pump is off. The rest of the time, full pump pressure is deadheaded against the regulator and regulated pressure flows to the carburetor.
The picture to the right shows the pump mounted on the underside of the vehicle. To try to get the pump to be higher than the fuel tank and away from exhaust heat, I mounted it high on the wall of the spare tire well (hatch area) on the passenger side.
Edelbrock carbs like 5.5 psi of fuel pressure. Installing a fuel regulator and gauge is a great idea. Do not trust the gauge after it gets warm though. After running for a length of time, the gauge reads low pressure, but there is no hesitation or fuel starvation. There are fuel filters between the tank and pump, and before the regulator. A fuel return line to the tank is not necessary, since fuel can backflow through the pump and back to the tank when the pump is off. The rest of the time, full pump pressure is deadheaded against the regulator and regulated pressure flows to the carburetor.
In the middle of the picture, there are three nuts / bolts in the shape of a triangle. This shows how the fuel pump is mounted looking from the inside of the car. The view is looking from behind the car through the hatch into the spare tire well.
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When the ashtray lid is flipped open, it reveals this panel with push buttons and indicator lights. This gives me peace of mind so that I can tell what systems are electrically powered while driving and sort of acts like a cheap security system, since someone would have to figure out how to start this thing.
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