filmnews

iTrader: (2)

Why do a lot of people on this board say not to use a light crank pulley if you plan on going turbo or supercharged? I know a lot of people who use light weight crank pulley's with their boosted setup.

Ztalker

just don't use the underdrive pulley for turbo.

filmnews

iTrader: (2)

Is it ok with the Vortech SC?

Ztalker

i don't think so, not recommended by the manufacturer.

sentry65

iTrader: (11)

don't underdrive with the vortech. Lightweight is fine as long as it's the same diameter. Underdrive pulleys will lose power from the vortech and make less boost

davidv

iTrader: (2)

If you are installing forced-induction, why mess with inconsequential bolt-ons like a crank pulley?

sentry65

iTrader: (11)

every bit helps, the faster you can rev up, the faster you accellerate

Cux350z

iTrader: (162)

i could see using one for a turbo, since its exhaust driven. But, for vortech no. You dont want to underdrive the vortech.

could you then get a smaller pulley for the vortech, one that is 85% smaller would match the UR size. Then youd probably need a new belt. @3.33 stock, 85 is 2.83, does that seem right?

bad part is, ill find out eventually. Im going vortech, but couldnt seem to get my ur crank pulley off when i went to sell it. Gonna have a shop look at it.

Z1 Performance

iTrader: (564)

its fine for a turbo car

no reason you could not use the stock diameter lightweight crank pulley on the Vortech equipped car though