# Turbocompounding.

**URL:** <https://forums.speedlife.net/t/turbocompounding/8805>\
**Category:** NYSpeed Automotive\
**Created:** [March 2, 2006, 2:42pm UTC](https://forums.speedlife.net/t/turbocompounding/8805 "2006-03-02T14:42:44Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\
**Post date:** [March 3, 2006, 8:40am UTC](https://forums.speedlife.net/t/turbocompounding/8805/21 "2006-03-03T08:40:12Z")

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> [@newman](#):
>
> snip

i thought you killed the HG? meh, i did in mine. lol

so you are saying that the engine is just going to slow the turbine down (if it didnt have the VC)…

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 3, 2006, 8:46am UTC](https://forums.speedlife.net/t/turbocompounding/8805/22 "2006-03-03T08:46:24Z")

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> [@Zer0DazE](#):
>
> i thought you killed the HG? meh, i did in mine. lol
> 
> so you are saying that the engine is just going to slow the turbine down (if it didnt have the VC)…

no, the slower spinning turbine will just increase exhaust backpressure a bit.

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**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\
**Post date:** [March 3, 2006, 8:59am UTC](https://forums.speedlife.net/t/turbocompounding/8805/23 "2006-03-03T08:59:45Z")

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dig it

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [March 3, 2006, 9:51am UTC](https://forums.speedlife.net/t/turbocompounding/8805/24 "2006-03-03T09:51:43Z")

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> [@www.holset.com](#):
>
> What are its advantages? In extracting work from waste energy, the overall thermal efficiency of the engine is increased (46% instead of 42%). In simple terms more is extracted from the fuel consumed. This creates a more powerful engine and provides better efficiency.

I never would have thought it would have helped that much. :tup:

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 3, 2006, 10:17am UTC](https://forums.speedlife.net/t/turbocompounding/8805/25 "2006-03-03T10:17:36Z")

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> [@BikerFry](#):
>
> I never would have thought it would have helped that much. :tup:

4% is kind of weak… but that is thermal efficiency, not mechanical.

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**Author:** ![TrueBlue](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/trueblue/32/7245_2.png) [@TrueBlue](https://forums.speedlife.net/u/TrueBlue)\
**Post date:** [March 3, 2006, 10:26am UTC](https://forums.speedlife.net/t/turbocompounding/8805/26 "2006-03-03T10:26:53Z")

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> [@newman](#):
>
> that’s how i stumbled upon it, i was looking at old 3500 HP wright airplane motors. I was surprised that i had never heard of it, seeing as the technology was decades old.

R3350?

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