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Location:
Melbourne
Registered:
June 2004
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Re: extractors
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Wed, 22 December 2004 07:08
 
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| Henn wrote on Wed, 22 December 2004 17:10 |
Extraactors for turbo engines (Tuned/equal length turbo manifolds) do exist and can make a significant improvement over factory or log type manifolds.
Hen
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Wouldn't that be more a problem with messy, poor flow through crappy cast factory manifolds, rather than benefits from tuned length exhaust runners? From what I've read, it's most important to keep the pulses at the turbo housing evenly spaced, so that the pressure and flow through the turbine & housing is as even as possible. I think this is where most of the benefit is in twin-scroll exhaust housings, because it's easier to keep the exhaust pulses from different cylinders from "seeing" each other. i.e. an L4 motor would run cyl 1&4 through 1 scroll, 2&3 through the other.
I don't THINK exhaust scavenging is a priority with turbo engines anyway. I think you'd get as much/more benefit from keeping the xsorszt manifold as short as possible, to keep the heat in the gas, and the velocity as high as possible.
hhmmm.. . - ask Peter Luxon at APS. He'll know 
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| | Subject | Poster | Date |
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extractors
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Meat_rack | Sun, 19 December 2004 12:35 |
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Re: extractors
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st184 sillycar | Sun, 19 December 2004 22:30 |
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Re: extractors
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jesseT18 | Sun, 19 December 2004 23:35 |
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Re: extractors
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st184 sillycar | Mon, 20 December 2004 01:02 |
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Re: extractors
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CrUZsida | Mon, 20 December 2004 03:52 |
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Re: extractors
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db__ | Mon, 20 December 2004 04:53 |
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Re: extractors
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CrUZsida | Mon, 20 December 2004 04:56 |
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Re: extractors
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oldcorollas | Mon, 20 December 2004 05:43 |
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Re: extractors
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st184 sillycar | Mon, 20 December 2004 10:17 |
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Re: extractors
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riceburna73 | Tue, 21 December 2004 03:22 |
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Re: extractors
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st184 sillycar | Tue, 21 December 2004 07:21 |
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Re: extractors
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cheese_cracka | Tue, 21 December 2004 10:46 |
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Re: extractors
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CrUZsida | Tue, 21 December 2004 11:57 |
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Re: extractors
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cheese_cracka | Tue, 21 December 2004 12:01 |
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Re: extractors
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Meat_rack | Tue, 21 December 2004 12:06 |
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Re: extractors
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CrUZsida | Tue, 21 December 2004 12:32 |
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Re: extractors
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cheese_cracka | Tue, 21 December 2004 13:16 |
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Re: extractors
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oldcorollas | Tue, 21 December 2004 13:22 |
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Re: extractors
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Meat_rack | Tue, 21 December 2004 13:23 |
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Re: extractors
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Meat_rack | Tue, 21 December 2004 13:29 |
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Re: extractors
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oldcorollas | Wed, 22 December 2004 10:33 |
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Re: extractors
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Henn | Wed, 22 December 2004 06:10 |
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Re: extractors
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st184 sillycar | Wed, 22 December 2004 07:08 |
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Re: extractors
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White Rabbit | Tue, 28 December 2004 06:28 |
