Preparation for the STILLEN supercharger

LiquidZ

I fail to see this. The turbo requires no work from the engine to spin.

I'm just going to stop here before a supercharger vs turbo debate explodes.

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G37Sam

So if you turn the engine off does the turbo still spin?

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LiquidZ

For a short period of time, yes. The turbo impeller/turbine
wheel maintain some rotational velocity once the exhaust gases stop flowing. Obviously, once internal friction forces take over, the rotational velocity of the impeller/turbine decreases to zero.

Yes, turbos do add backpressure which can be seen to limit power output, but my point was the turbo requires no mechanical work from the actual engine to spin and produce power. The turbo simply works off of waste exhaust gas, and not the engine itself.

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G37Sam

LOOOL I like what you did there, very smart.

You know I wasn't referring to the interial energy stored in the turbo due it being a rotating mass.

I was just saying, to get the turbine spinning, the pistons have to put extra effort to push the exhaust gasses through it. That extra effort would be "robbed" from the engine's total bhp. Where else would the energy come from?

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phantom21

SSSHHHHh!!! lets not talk about exploding.

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2009 PG 6spd Sport || 30% side tint, 15% rear || All Redline fluids || Berk HFC's intalled~PITA Bolt || Stillen G3's || Berk CBE || BC Racing Coilovers with 10K/12K Swift springs & RA valving|| SPL rear camber arms || 20mm/15mm spacers