Write a guideElectric superchargers
by: motoman22( 81)
190 out of 198 people found this guide helpful.
Guide viewed: 8775 times Tags: electric | supercharger | boost | turbo | turbocharger
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Electric 'superchargers' will not provide boost on an automobile engine and will most likely rob a good running engine of high-RPM power by RESTRICTING airflow.
Consider for a moment what a supercharger must do to increase power. It must actually PUSH more air into the motor than it draws in naturally. Creating boost means moving a large volume of air (CFM) at increased pressure (PSI.) Most of these on eBay are nothing more than bilge exhaust fans designed for use on inboard boats. They might *seem* to move a lot of air but you honestly have no point of refrence, you don't know how much the motor sucks naturally. I assure you, it's substancially more than a plastic fan can provide.
Small true superchargers like the Eaton M-90 push only a small volume of air for a boost application. However, this small supercharger will push MORE boost than a commercial quality, gas-powered, backpack leaf blower and I'm sure we've all seen what they can do. Toss an electric vent fan like these into the comparison and you have effectively brought a rubberband to a gunfight.
How can an electric blower actually rob power? Simply put, the electric fan cannot push as much air as the motor demands at high RPM so the engine has to not only suck air but it also has to pull the fan faster than it's already moving.
Notice that few of the electric 'supercharger' auctions will provide the Boost @ CFM rating of the fan and that's for good reason. Simple math can determine the point at which they ROB power from YOUR engine if you simply know the size of your engine.
If electric fans could boost a car engine, manufacturers would be doing it. To increase power on a budget consider underdrive pulleys or a K&N air filter or an upgraded muffler/catalytic converter setup. Simply cleaning the junk out of your car and reducing weight will have more impact on your performance than a bilge fan.
what do yall think I found this on good ole ebay???