question electric chargers

Louis · 02-09-2010, 07:21 PM

I have 87' with low miles and want to put an electric charger in of my own design. I have seen the one for about $300, but I can get a fan with 2,500 cfm for $80. An extra 20 hp would be just fine with me. Will this increase be bad for the engine? It is worth alot to me with low miles that it has. Will I mess up the air-fuel mixture? or anything else?

Smokestoomuch · 02-09-2010, 07:41 PM

I don't think its worth your trouble.

div0 · 02-09-2010, 10:06 PM

Maintain 2,500 cfm with what differential pressure across the fan? And with what current draw from the motor? Those are important numbers to look at.

At 12V it takes hundreds of amps to generate the power required to move this quantity of air with even a small positive differential pressure.

328FTW · 02-10-2010, 12:46 AM

I don't see it working at all, fans create large CFMs NOT pressure any extra CFM being generated that the engine isn't going to use will not go into pressure buildup it will just not exist since the fan can't hold pressure unless it's drawing some big numbers for amperage and spinning pretty damn fast.

If you look at those e-gay superchargers they do nothing even though they have high flow in fact they reduce horsepower if you look at a dyno graph.

Gairloch · 02-10-2010, 01:00 AM

Another issue is that those electric blowers don't usually allow pass through which means at high RPM they become choke points.

toyotaspeed90 · 02-11-2010, 05:26 PM

really? this hasn't been gone over enough?

Louis.... do some searches.... there's a difference between CFM and PSI created.

Louis · 02-11-2010, 09:42 PM

I know that a fan can spin fast even if the air is not moving through it, or if the intake won't allow air to go through. The fan motor might overheat, or maybe not, but I am looking for a small gain in horsepower, I don't have the money to buy a good supercharger. Even if I only gained 5 or 10 hp, that;s all I can afford now. What else can I do? exhaust is from what I have read in this forum makes very little change. It seems like one can either do nothing or very big changes for more power. Am I missing something? Isthat statement correct?

Jackstand Queen · 04-02-2010, 12:41 PM

Perform an NA to SC conversion. Start gathering parts, the process will take a while. Even if you have all the money you need on hand right now. An electric intake fan is going 1/4 of the way . . . so go all the way with an SC conversion.

Gairloch · 04-02-2010, 12:46 PM

One quarter of the way is massively generous.

ToyotaTechGeek · 04-03-2010, 04:02 PM

Quote:

Originally Posted by Gairloch

One quarter of the way is massively generous.

+1
colossal

Kerry Phillips · 04-03-2010, 04:51 PM

Dude, that is absolutely rediculous. It takes horsepower to Force Induction an engine, either from the crankshaft ie. supercharger or from exhaust heat and pressure ie. turbocharger.

Now if U really really want to do some serious jury rigging.
Go buy a high (gas) powered leaf blower and use that to pressurize/ force induction an engine. Go to youtube and look it up.

Now about the electrical charger/fan... Don;t waste your time & money on such non-sense. I have a feeling U would have (expensive) electrical gremlins long before any performance increase!
Kerry

ToyotaTechGeek · 04-04-2010, 09:04 AM

i actually 'know' someone who bought one of these. i also know the people who own/operate the dyno onto which the person placed his vehicle to test the electric fan 'supercharger'. the car lost whp (compared to his baseline sans fan). end of story.

02-09-2010, 07:21 PM	#1 (permalink)
Louis No Skills Join Date: Dec 2009 Posts: 15 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	question electric chargers I have 87' with low miles and want to put an electric charger in of my own design. I have seen the one for about $300, but I can get a fan with 2,500 cfm for $80. An extra 20 hp would be just fine with me. Will this increase be bad for the engine? It is worth alot to me with low miles that it has. Will I mess up the air-fuel mixture? or anything else?

04-03-2010, 04:51 PM	#11 (permalink)
Kerry Phillips Cage Fighter Join Date: May 2006 Location: Chattanooga, TN area Posts: 299 Thanks: 0 Thanked 21 Times in 21 Posts iTrader Rating: (0/0% )	Electric charger Dude, that is absolutely rediculous. It takes horsepower to Force Induction an engine, either from the crankshaft ie. supercharger or from exhaust heat and pressure ie. turbocharger. Now if U really really want to do some serious jury rigging. Go buy a high (gas) powered leaf blower and use that to pressurize/ force induction an engine. Go to youtube and look it up. Now about the electrical charger/fan... Don;t waste your time & money on such non-sense. I have a feeling U would have (expensive) electrical gremlins long before any performance increase! Kerry

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02-09-2010, 07:41 PM	#2 (permalink)
Smokestoomuch Cage Fighter Join Date: May 2006 Location: Palm Springs, California (SoCal) Posts: 188 Thanks: 16 Thanked 0 Times in 0 Posts My Google Map iTrader Rating: (4/100% )	I don't think its worth your trouble.

02-09-2010, 10:06 PM	#3 (permalink)
div0 No Skills Join Date: Jul 2008 Location: San Jose, CA Posts: 31 Thanks: 0 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	Maintain 2,500 cfm with what differential pressure across the fan? And with what current draw from the motor? Those are important numbers to look at. At 12V it takes hundreds of amps to generate the power required to move this quantity of air with even a small positive differential pressure.

02-10-2010, 12:46 AM	#4 (permalink)
328FTW Crazy Nasty Honey Badger Join Date: Aug 2008 Location: New Zealand Posts: 5,235 Thanks: 24 Thanked 266 Times in 239 Posts My Google Map iTrader Rating: (1/100% )	I don't see it working at all, fans create large CFMs NOT pressure any extra CFM being generated that the engine isn't going to use will not go into pressure buildup it will just not exist since the fan can't hold pressure unless it's drawing some big numbers for amperage and spinning pretty damn fast. If you look at those e-gay superchargers they do nothing even though they have high flow in fact they reduce horsepower if you look at a dyno graph.

02-10-2010, 01:00 AM	#5 (permalink)
Gairloch Dreaming of apexes Join Date: Aug 2005 Location: Minneapolis, MN Posts: 5,313 Thanks: 139 Thanked 296 Times in 264 Posts Blog Entries: 4 My Google Map iTrader Rating: (7/100% )	Another issue is that those electric blowers don't usually allow pass through which means at high RPM they become choke points.

02-11-2010, 05:26 PM	#6 (permalink)
toyotaspeed90 No Skills Join Date: Jun 2006 Location: Bellingham, WA Posts: 2,407 Thanks: 0 Thanked 149 Times in 144 Posts My Google Map iTrader Rating: (0/0% )	really? this hasn't been gone over enough? Louis.... do some searches.... there's a difference between CFM and PSI created.

02-11-2010, 09:42 PM	#7 (permalink)
Louis No Skills Join Date: Dec 2009 Posts: 15 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I know that a fan can spin fast even if the air is not moving through it, or if the intake won't allow air to go through. The fan motor might overheat, or maybe not, but I am looking for a small gain in horsepower, I don't have the money to buy a good supercharger. Even if I only gained 5 or 10 hp, that;s all I can afford now. What else can I do? exhaust is from what I have read in this forum makes very little change. It seems like one can either do nothing or very big changes for more power. Am I missing something? Isthat statement correct?

04-02-2010, 12:41 PM	#8 (permalink)
Jackstand Queen Cage Fighter Join Date: May 2008 Posts: 840 Thanks: 75 Thanked 64 Times in 60 Posts iTrader Rating: (1/100% )	Perform an NA to SC conversion. Start gathering parts, the process will take a while. Even if you have all the money you need on hand right now. An electric intake fan is going 1/4 of the way . . . so go all the way with an SC conversion.

04-02-2010, 12:46 PM	#9 (permalink)
Gairloch Dreaming of apexes Join Date: Aug 2005 Location: Minneapolis, MN Posts: 5,313 Thanks: 139 Thanked 296 Times in 264 Posts Blog Entries: 4 My Google Map iTrader Rating: (7/100% )	One quarter of the way is massively generous.

04-04-2010, 09:04 AM	#12 (permalink)
ToyotaTechGeek resident GEEK! Join Date: Mar 2005 Location: ...boosting mid-corner Posts: 995 Thanks: 14 Thanked 31 Times in 31 Posts My Google Map iTrader Rating: (2/100% )	i actually 'know' someone who bought one of these. i also know the people who own/operate the dyno onto which the person placed his vehicle to test the electric fan 'supercharger'. the car lost whp (compared to his baseline sans fan). end of story.