Electric Supercharger
01-23-2005, 01:00 PM
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Car: 1983 Firebird
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Electric Supercharger
I saw this thing on ebay that is basicly an electric fan that is installed on the intake and was wondering if this would actualy give you any horsepower. Now I know that it wouldn't even come close to a $2000 supercharger but it claims to give double digit horsepower and torque increase with 2.1 psi for $140. The principle of it seems like it could work like a ram air system but I'm just not sure that an electric fan can spin fast enough to make even a small difference. I think it is just a scam but thought i'd ask anyways. Anyone tried something like this? Here is the link:
http://cgi.ebay.com/ebaymotors/ws/eB...949742187&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...949742187&rd=1
01-23-2005, 01:06 PM
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I don't doubt it wouldn't produce boost, I just don't think it could flow enough air to be worth $140. I wouldn't be surprised if you got around 20hp though.
01-23-2005, 01:24 PM
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Originally posted by Cruz'N Bruz'R
I don't doubt it wouldn't produce boost, I just don't think it could flow enough air to be worth $140. I wouldn't be surprised if you got around 20hp though.
I don't doubt it wouldn't produce boost, I just don't think it could flow enough air to be worth $140. I wouldn't be surprised if you got around 20hp though.
01-23-2005, 01:54 PM
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If you got it close enough to the throttle body, and it actually created + pressure, sure you would see a gain
01-23-2005, 02:26 PM
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01-23-2005, 07:17 PM
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Can you say scam? That is hilarious though. Look and those "high voltage" wires coming out of it! 
That thing claims it can flow 500 cfm...oh my! Wait...my carb is 750 cfm though...so basically I'd pay $140 to restrict my intake. Sounds like a plan! Look at that beefy motor! Most electric cooling fan motors would dwarf that. And if those would work for superchargers, everyone would be doing it!
My sarcasm is directed at the people selling (and buying) that crap, not to the poster.
That thing claims it can flow 500 cfm...oh my! Wait...my carb is 750 cfm though...so basically I'd pay $140 to restrict my intake. Sounds like a plan! Look at that beefy motor! Most electric cooling fan motors would dwarf that. And if those would work for superchargers, everyone would be doing it!My sarcasm is directed at the people selling (and buying) that crap, not to the poster.
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01-23-2005, 08:12 PM
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the so called electric 'supercharger' is actually a cheap boat part which people market for cars. It works for a little bit, even though it throw hot air into the engine. Once the engine gets close to full throttle the engine requires more air then the 'superhcarger' can put out so the engine loses power towards the top end while gaining a little at low end.
Best scam on ebay.
Best scam on ebay.
01-23-2005, 11:30 PM
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stupidest thing ever.........any oxygen thief that buys that should self terminate
01-23-2005, 11:30 PM
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That thing is going to cause a loss of HP due to airway restriction. Im sure people are buying them though. The tuners will be calling it "internal supercharging" or some such nonsense.
01-24-2005, 12:32 AM
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Just read the guys feedback. I would decline the offer.
02-08-2005, 01:18 AM
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Trust me, stay away from it, back in the days when i was with avalanche motorsports it was a hot item for the import guys, problem is there were alot of problems from guys that got em having pieces break off and go into the motor, i have pulled apart top ends on quite a few **** burners to get chunks of plastic out of em from those things. Not fun
02-09-2005, 03:28 PM
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There was another post i just read about this the ebay ones are junk, however there is a guy who spent years trying to perfect an electric supercharger and he finally came up with a tri motor electric supercharger that did produce some hp gain. But if your looking into the ebay electric blower you might as well hook a leave blower to it you will probably get the same results...jack sh8t
02-10-2005, 09:14 AM
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Due to the dynamics of the fluid ( air ) and the magnitude and velocity of the air, this Fan supercharger could never spin fast enough to produce boost that could be used. Instead it will be a restriction if it is inline with normal intake flow because of the reduced volume for air to flow through.
Summary: Just a waste of time and money
Summary: Just a waste of time and money
02-10-2005, 04:16 PM
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02-11-2005, 05:33 PM
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Yeah, this has been covered already take a look at this, here's some hard facts: https://www.thirdgen.org/techbb2/sho...hreadid=229088
Last edited by tilstad; 02-11-2005 at 05:35 PM.
02-11-2005, 07:02 PM
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Originally posted by Dan8289gta
There was another post i just read about this the ebay ones are junk, however there is a guy who spent years trying to perfect an electric supercharger and he finally came up with a tri motor electric supercharger that did produce some hp gain. But if your looking into the ebay electric blower you might as well hook a leave blower to it you will probably get the same results...jack sh8t
There was another post i just read about this the ebay ones are junk, however there is a guy who spent years trying to perfect an electric supercharger and he finally came up with a tri motor electric supercharger that did produce some hp gain. But if your looking into the ebay electric blower you might as well hook a leave blower to it you will probably get the same results...jack sh8t
His were also $4,000, only worked small displacement motors and would require a second battery. Nothing of the sort will work on a v8. They'd also drain the batteries far too much when at WOT so you had to wait a bit to let the batteries charge. So boost wasn't always just a pedal to the metal away.
They were pretty cool thought, he had dyno graphs showing over 170 + more hp on a some volkswagon engine. Once again, it was only for the four banger crowd and still cost as much as a centrifugal charger.
T: What size engine will this work on?
TK: Testing has shown the smaller the engine, the higher the sustainable boost. If a 3.5-liter engine is running 24v, boost will peak at 10 psi at 2000 rpm and then drop off to 3 psi at 6500 rpm. A 1750cc engine would make 10 psi at 4000 rpm while dropping off to 3 psi at 13,000 rpm. The boost drop is linear, so that 1750cc engine would make 7-8 psi at redline, and launch at 15 psi using 24 volts. If a blow-off valve is used to bleed off excess pressure, a steady sustainable boost is possible until the capacity of the supercharger is reached. This means that a prepared 1.6-liter four-cylinder can run a sustained 15 psi at 36 volts to 6000 rpm.
TK: Testing has shown the smaller the engine, the higher the sustainable boost. If a 3.5-liter engine is running 24v, boost will peak at 10 psi at 2000 rpm and then drop off to 3 psi at 6500 rpm. A 1750cc engine would make 10 psi at 4000 rpm while dropping off to 3 psi at 13,000 rpm. The boost drop is linear, so that 1750cc engine would make 7-8 psi at redline, and launch at 15 psi using 24 volts. If a blow-off valve is used to bleed off excess pressure, a steady sustainable boost is possible until the capacity of the supercharger is reached. This means that a prepared 1.6-liter four-cylinder can run a sustained 15 psi at 36 volts to 6000 rpm.
Last edited by pasky; 02-11-2005 at 07:08 PM.
02-19-2005, 03:16 AM
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i wonder if you can reverse the flow on thoese fans to create a vaccum. my hoover vac just died and i am looking for a replacement
dont waste your time and money on that junk.
dont waste your time and money on that junk.
02-19-2005, 04:01 AM
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Cool little write up i saw on another fourm http://forums.s-series.org/viewtopic.php?t=28443
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