View Poll Results: What spools a turbo faster: Light flywheel or Heavy flywheel
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What spools a turbo faster: Light flywheel or Heavy flywheel
03-31-2006, 09:15 AM
#1
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Join Date: Apr 2004
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What spools a turbo faster: Light flywheel or Heavy flywheel
Me and a couple friends have been having this argument for a couple weeks and I thought I'd see what you guys say. I would have asked this on H-T but I want to be proven RIGHT.
03-31-2006, 10:49 AM
#3
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Join Date: Feb 2004
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Re: What spools a turbo faster: Light flywheel or Heavy flywheel
Wouldn't the lighter make it boost faster but come time to shift it's gonna fall out of boost if you don't shift fast enough unlike the heavier flywheel will keep the momentum of the engine going and not drop down thus still keeping it in boost? I dunno I'm just some dumb injen :1
03-31-2006, 11:29 AM
#4
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Re: What spools a turbo faster: Light flywheel or Heavy flywheel
Lighter will rev up more quickly. Revs = exhaust gas. Exhaust gas = spool. You could theoretically spool a turbo on lower amounts of exhaust gas, though over a longer time. So with a heavy flywheel you will may get it to spool at a lower RPM.
Don't matter though, a heavy flywheel is absorbing more energy in the system than a lighter flywheel (dutring acceleration), so the lighter will always result in higher WHP during engine acceleration.
As for the issue with boost falling during shifts, if you upshift so slowly that the rev's drop far enough that when you dump the clutch they pick up again you have some major problems with your driving style.
Don't matter though, a heavy flywheel is absorbing more energy in the system than a lighter flywheel (dutring acceleration), so the lighter will always result in higher WHP during engine acceleration.
As for the issue with boost falling during shifts, if you upshift so slowly that the rev's drop far enough that when you dump the clutch they pick up again you have some major problems with your driving style.
03-31-2006, 11:59 AM
#5
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Join Date: Jan 2005
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Re: What spools a turbo faster: Light flywheel or Heavy flywheel
Originally Posted by krustindumm
As for the issue with boost falling during shifts, if you upshift so slowly that the rev's drop far enough that when you dump the clutch they pick up again you have some major problems with your driving style.
but I would think a lighter flywheel will result in higher power and better acceleration, regardless of boost. it's kind of like asking which is better, a cold air intake or an header back exhaust :1 both will make it better
03-31-2006, 12:38 PM
#6
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Re: What spools a turbo faster: Light flywheel or Heavy flywheel
Originally Posted by Tatakai
but I would think a lighter flywheel will result in higher power and better acceleration, regardless of boost. it's kind of like asking which is better, a cold air intake or an header back exhaust :1 both will make it better
03-31-2006, 12:45 PM
#7
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Join Date: Mar 2004
Posts: 2,039
Re: What spools a turbo faster: Light flywheel or Heavy flywheel
How are you figuring which is first I would think the heavier flywheel would create more boost at lower rpms but the lighter one may hit boost quicker over the same period of time at a higher rpm...I don't know I'm not a fan of light fly wheels for some reason
