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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-20-2005, 02:14 PM   #31
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I'm not a gearhead by any means..... but something to "suck" the exhaust from the car probably isn't possible, or a good idea.

The rate that the exhaust leaves the car is pretty damn fast.... and assuming you could get an electric motor to spin "faster" then that, it would create less back pressure, and it would create a pull.... I don't think there are any gains to be made by this method.

But wouldn't 'almost' the same thing be done by just opening your exhaust up a bit more...? I know it wouldn't create the sucking you were looking for, but it removes the back pressure.

But in the end, until someone does it.... we'll never know the true #*.....
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Old 02-20-2005, 02:55 PM   #32
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Quote:
Originally Posted by Merlin 91/97
The rate that the exhaust leaves the car is pretty damn fast.... and assuming you could get an electric motor to spin "faster" then that, it would create less back pressure, and it would create a pull.... I don't think there are any gains to be made by this method.

But wouldn't 'almost' the same thing be done by just opening your exhaust up a bit more...? I know it wouldn't create the sucking you were looking for, but it removes the back pressure.
See DrJay'* post... the idea of an engine needing "backpressure" is a myth from what I understand.... I know this point has been ridden into the ground, but I think exhaust tuning is more dependent on making your pipe small enough to achieve the proper velocity of exhaust gas. By opening up your exhaust you're slowing down the exhaust flow, which is bad (unless you've offset the larger exhaust with performance mods). Even if you just make your exhaust piping shorter, you're not increasing the speed of the gases. My idea is to simply speed up the exhaust flow by creating suction.

I know there'* no use debating the effectiveness of this stuff until it'* actually tried out, like you said. I just wanted to make sure I'm communicating my original idea and the principles behind it. If I have the means someday, I'll see what I can do with this concept.
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Old 02-20-2005, 03:24 PM   #33
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im gonna add that this will probly make ur gas mileage worse...
but im sure u were thinking about power when u thought this up...
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Old 02-20-2005, 04:57 PM   #34
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you are thinking along the lines of the "backpressure" though. With enough suction, you create a vacuum. With that vacuum trapped in the cylinder(though it would be very little), could create the effect of "supercharging" an engine by creating additional need for air to be pulled into the cylinder, more air + fuel = more power generally.... Maybe I'm off but it would be something to be tested to see if it works.... sorrt of like side-gapping spark plugs..

Additionally, not only do you get an increase in exhaust flow rates, the vacuum created by the cylinders would, I think, increase flow on the intake side. Reverse supercharging....
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Old 02-21-2005, 01:43 PM   #35
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this turbine would have to be a variable speed motor so it would speed up and slow down with RPM'* b/c if it didnt things would get all messed up...i still dont think this idea would work though
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