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Lightweight pulley Q's

I imagine that cost is a bit of a factor, but there are ways to make even a steel pulley lighter (weight relief) - why would Nissan opt to go

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Lightweight pulley Q's

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08-31-2009, 09:19 AM	#1 (permalink)
kannibul A True Z Fanatic Join Date: Jun 2009 Location: Jenks, OK Posts: 2,281 Drives: 370z Touring/Sport Rep Power: 267	Lightweight pulley Q's I imagine that cost is a bit of a factor, but there are ways to make even a steel pulley lighter (weight relief) - why would Nissan opt to go with a heavier crank pulley? Would there be any detrimental effects of using a lightweight pulley? Next, in relation to using an underdrive pulley vs stock size pulley - I realize the underdrive would have more of the benefit of an easier time turning the accessories on the engine due to there being a different ratio, but, how much power is "gained" simply from it being a lightweight pulley...vs a lightweight underdrive pulley?

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