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Street Race Truck More... The Toolbox

Electric Fuel Pump vs Mechanical Fuel Pump

7/26/2016
Mechanical Fuel Pump

For some the convenience and cost of a mechanical fuel pump might outweigh the idea of using an electric pump. Mechanical pumps are quiet, require minimal effort to install, and of course there is no wiring to worry about. For most carbureted fuel systems (street/strip) any off-the-shelf performance mechanical pump will handle an engine rated under 450hp just fine. Boosted applications or engines running nitrous with higher horsepower ratings will usually need the strength or increased flow of an electric pump. But for weekend and daily drivers looking for something reliable, quick and easy to install,a mechanical pump will usually work just fine.

Electric Fuel Pump

Upgrading to an electric pump is needed when higher fuel pressures are required, like boosted applications, nitrous, and fuel injection. In some applications, there may even be clearance issues where a mechanical pump cannot be used. Electric pumps offer a larger variety of flow rates and pressure outputs in comparison to mechanical pumps. The most common electric pumps require a 12 volt circuit with the use of a relay which gives you multiple shut off options. Most external electric pumps are gravity fed and are simply designed to push fuel, so it’s important that they are mounted properly below and close to the gas tank.

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