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forwheeler forwheeler is offline
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Join Date: Oct 2007
Location: Idaho
Posts: 193
Originally Posted by WERK I View Post
Sounds like a Perpetual Motion Machine to me.
This would assume that the turbo will spin almost indefinitely when the engine is not running, which of course is not the case.

This is just my thinking at this time but I am not an engineer.

Assuming the turbo shaft is not put or kept in motion by the intake, most if not all the motion is made by the exhaust side. The compressor side is then a drag on the spinning motion and reducing that will make it spin sooner, faster, longer etc. When the throttle plate is wide open there is low pressure/resistance to the impeller. When the plate has a smaller opening during slow cruise then there is more pressure/resistance to the impeller.

I think the BOV being open during smaller plate openings will help keep the impeller spinning. I may be wrong but it just makes sense to me right now.
Old 03-26-2010, 08:04 AM
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