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Postby iOnic » Mon Feb 13, 2012 6:29 pm

^ curious about how well that would work with pressure being equal at both sides of the turbine.
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Postby DVSMOTORSPORT » Mon Feb 13, 2012 6:41 pm

If pressure was equal at both sides it wont flow. The muffler will be sectioned so the gasses will flow straight into the turbo then out the other side into the actual muffled section (if it even has any)
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Postby samlloyd » Mon Feb 13, 2012 7:38 pm

Even though the gasses are flowing just as much back there, are the turbos affected by a colder exhaust going through them (as in less efficient) than a hot one as it would be right by the head?
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Postby celica_xr9145 » Mon Feb 13, 2012 7:40 pm

Haha, they are great, I have a picture somewhere where someone used a Pringles pot as an intake manifold :lol:
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Postby Bling » Mon Feb 13, 2012 7:44 pm

I know there will be a lot more too it, but if the exhaust is colder, wouldn't that be a good thing for intake temps? Or not much of an issue on truebros?
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Postby sergei » Mon Feb 13, 2012 7:45 pm

samlloyd wrote:Even though the gasses are flowing just as much back there, are the turbos affected by a colder exhaust going through them (as in less efficient) than a hot one as it would be right by the head?


Yes it will. The density increases the volume decreases. This shifts the whole efficiency out of the window.

The turbine and compressor are designed for specific density/volume/flow, and "geared" to be most efficient at specific parameters. The simplest example is pitch of a blade on a propeller. A hyperbole example is comparison between boat propeller and air plane propeller.
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Postby iOnic » Mon Feb 13, 2012 8:00 pm

DVSMOTORSPORT wrote:If pressure was equal at both sides it wont flow. The muffler will be sectioned so the gasses will flow straight into the turbo then out the other side into the actual muffled section (if it even has any)


figured there might be some trickery inside to make sure things went where they were wanted but didn't want to assume - this is the fail thread afterall...
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Postby Crucible » Mon Feb 13, 2012 8:18 pm

DVSMOTORSPORT wrote:Image


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Postby matt dunn » Mon Feb 13, 2012 8:37 pm

BZG|Bling wrote:I know there will be a lot more too it, but if the exhaust is colder, wouldn't that be a good thing for intake temps? Or not much of an issue on truebros?


Say 1 litre of air goes into the engine, it comes out hot and takes up 5litres of space, so you have 5L of air turning the turbo blades.
As the exhaust gasses cool they shrink, so at the back you now only have 3 litres of air to turn the blades.

You could counteract it buy using different blade and housings etc etc though.

(And the number above are probably nowhere near accurate but give you the idea)
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