RacePump operates on a principle similar to a master cylinder, but with an ingenious floating O-ring valve function that continually adjusts to the amount of fuel needed by the engine. This is how RacePump can be used on any engine from 200-2500HP. RacePump's variable stroke piston actually pumps less or more fuel as needed. Because of this variable flow, it doesn't need a bypass type regulator or return line like traditional constant pressure pumps do. RacePumps higher efficiency and variable flow means that it doesn't have to work as hard as other pumps and doesn't add heat to the fuel like a conventional diaphragm pump. RacePump also consumes less horsepower. The pump for carbureted engines only requires 25lbs of pushrod pressure compared to 125lbs(!) pressure of a diaphragm pump. In thebelow animations, you can see how RacePump is simpler, more efficient and has fewer parts to wear out.

You probably don't need the pressure and volume that RacePump can supply, but the extra capacity ensures that your engine will not stumble at the end of a straight because of fuel starvation. Regulators function smoother and more consistent with the added pressure and flow. With a smoother supply of fuel, a circle track car will feel more predictable and pick up smoother out of the corners. The design also makes it easier to run fuel lines and the pump and fittings are less vulnerable in a crash. And on top of all that, the Race Pump just looks cool!