the GAYEST mod of all times
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Joined: Mar 2007
Posts: 2,576
From: wouldnt u like to know
the GAYEST mod of all times
Monte Of The Month -- March 2007
Joined: Apr 2006
Posts: 5,264
From: Woodstock, Ontario, Canada
RE: the GAYEST mod of all times
yah it sux all the companies out there selling stuff that does absolutely nothing...how do you think the people that buy your product feel...i dont understand how people can do that
Joined: Nov 2006
Posts: 520
From: iowa city, ia
RE: the GAYEST mod of all times
as far as working, i see they say nothing about how much boost is produced, i'll admit i was curious about something like this fora motorcycle in the past (very young n stupid) and did some testing. i found that the maximum pressure that i could get out of a fan, even at no flow was about 1/3" of water, i belive this equates to about .01 bar. and then that would drop as flow increased, so in a perfect world i figured you could gain up to 1% more power. however, the extra load on the alternator should cancel that out. looks like about a $345 stupidity tax.
Joined: Oct 2006
Posts: 3,986
From: North Fond du Lac, WI
RE: the GAYEST mod of all times
Technically that MIGHT, and that is a very loose might work at the low end, but as the rpms ramp up I think it would be a hinderance.
The only way to know for sure is to measure the air intake total at an rpm range and know what the "turbo" (we'll call it a fan from now on) puts out.
The intake is easy.Lets say 2000 rpms.
We take 2000 rotations per minute, multiply by the displacement of an engine and divide by 2 as it one rotation is used toinduct air/fuel mix and compress and the 2nd is the combusion and exhaust process.
So 2000 X 3.4 Liters / 2 = 3,400 Liters of Air per minute.
At 5500 rpm (the top end) 5500 X 3.4 / 2 = 9350 Liters of Air per minute.
After looking into it, they "claim" 250 Cubic Feet Per Minute. I don't remember what the displacement is for a 3400 so I'm going to go with a 3800 which I know translates to 231 cubic inches.
Per Google - 1 cubic inches = 0.000578703704 cubic feet
So: 5500 rpm X 231 Cubic Inches X 0.000578703704 conversion / 2 = 367.62 CFM
This means on a 3800 engine it is choking it as the fan only puts out 250 and the engine needs 367.62 breathing freely.
Running a quick calculation, it will only help up to 3725 RPM after that it is slowing you down.
It would have helped my old GEO.....
The only way to know for sure is to measure the air intake total at an rpm range and know what the "turbo" (we'll call it a fan from now on) puts out.
The intake is easy.Lets say 2000 rpms.
We take 2000 rotations per minute, multiply by the displacement of an engine and divide by 2 as it one rotation is used toinduct air/fuel mix and compress and the 2nd is the combusion and exhaust process.
So 2000 X 3.4 Liters / 2 = 3,400 Liters of Air per minute.
At 5500 rpm (the top end) 5500 X 3.4 / 2 = 9350 Liters of Air per minute.
After looking into it, they "claim" 250 Cubic Feet Per Minute. I don't remember what the displacement is for a 3400 so I'm going to go with a 3800 which I know translates to 231 cubic inches.
Per Google - 1 cubic inches = 0.000578703704 cubic feet
So: 5500 rpm X 231 Cubic Inches X 0.000578703704 conversion / 2 = 367.62 CFM
This means on a 3800 engine it is choking it as the fan only puts out 250 and the engine needs 367.62 breathing freely.
Running a quick calculation, it will only help up to 3725 RPM after that it is slowing you down.
It would have helped my old GEO.....
RE: the GAYEST mod of all times
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