ghetto electric forced induction

BCC423 · Post by **BCC423** » Sun Feb 27, 2005 5:30 pm

ok, i took the 98 in^3 my engine is, and divided it by 1728 to get that the displacement of my engine is .0567129629629629629629....... ft^3, multiplied that my 7000(max thinkable rpm) and got about 397 ft^3/min. if i did all my math right the max cfm of my engine is 397, with that said....if i had a 480 cfm electric blower motor hooked to the intake it should give some boost... in theory.....just a thought, but correct me if im wrong(i think it works out on paper), thanks

BCC423 · Post by **BCC423** » Sun Feb 27, 2005 5:37 pm

i just came across a 1200 cfm one on ebay, i think ima call b.s. on that one

KnightWalace · Post by **KnightWalace** » Sun Feb 27, 2005 5:58 pm

i don't think electric blowers do anything but suck horsepower... i think your car would be slower with it...

MMamdouh · Post by **MMamdouh** » Sun Feb 27, 2005 6:10 pm

same thing i heard... that also include them electric super chargers.

MMamdouh

BCC423 · Post by **BCC423** » Sun Feb 27, 2005 7:17 pm

well, provided you blow more air than you need.....it should work riight

KnightWalace · Post by **KnightWalace** » Sun Feb 27, 2005 9:11 pm

well... to be honest... it actually will hinder air moving freely... and to be honest... i don't think you can push more air in... it's a blower.... turbo chargers condense the air.... just cuz this can displace air... doesn't mean it will help....

just get an SRI... or CAI if you want more power....

all your going to do is hinder air free flowing into the intake/ and suck power...

BosnianLanos · Post by **BosnianLanos** » Sun Feb 27, 2005 11:24 pm

Fans and "electric superchargers" are completley useless. The reason being is that a fan cannot compress air into a space. Once the space becomes filled with air, the extra air will push backwards through the blades and mess with the natural incoming air from the engine vacuum, thereby choking the engine.

Turbo and superchargers are a one way system, the impellers and compressors push air in but the air cannot escape backwards, because there is nowhere to go! This forces boost into the engine creating horsepower.

I think the concensus on this site is that those things are useless, so don't waste your money. Unless you have your own test chamber to test new ideas, go with proven power adders, ie. CAI, SRI, Headers, exhaust, Turbo, etc.

Post by **PrecisionBoost** » Wed Mar 02, 2005 3:11 pm

BCC423 wrote:well, provided you blow more air than you need.....it should work riight

You will find that the available static pressure from this type of fan will add nearly zero air to your vehicle.

People get confused.... fans only blow their "maximum" cfm if there is very little static pressure difference between the two sides of the blade.

Turbo compressors are basicly computer designed fan blades running at incredible RPM levels ( 50,000 to 200,000 RPM !!! )

Needless to say unless the fan looks exactly the same as a turbo compressor wheel you are just spinning your wheels.... the fan won't do a damned thing for you.

I should try and dig up my fan specifications for the ones I use here in my electronics lab just to prove my point.

If the fan could keep up with the engine input I doubt that it would add more than 0.01psi of boost which is basicly zero.

Think about it this way..... if you glued the fan in place so it doesn't rotate and stuck it in your intake would you not loose power due to the restriction caused by the decrease in cross sectional area and turbulance caused by the air striking the blades?? ( the answer is yes )

So unless you have a fan that runs at 100,000 RPM and looks just like a turbo compressor fan running on an 8hp electric motor you will see no gains of any sort.