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And the Crank pully is lighter in weight and smaller which powers the accessories slightly less and both of these factors increase powere with the underdrive crank pulley?
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So the accessory pulleys are just essentially lighter in weight which corresponds to an increase in power?
And the Crank pully is lighter in weight and smaller which powers the accessories slightly less and both of these factors increase powere with the underdrive crank pulley?
And the Crank pully is lighter in weight and smaller which powers the accessories slightly less and both of these factors increase powere with the underdrive crank pulley?

Coz
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The choices are: Underdrive/Stock, I picked Underdrive
The next one is a ??
Power Steering/Alternator
Does that mean it is not really a set? Just one belt?
Or are there 2 different ways to underdrive? My pulley sits top dead center, on the alternator belt, but it is not the alternator pulley.
Do I pick Alternator?
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OK, so which set do I buy?
The choices are: Underdrive/Stock, I picked Underdrive
The next one is a ??
Power Steering/Alternator
Does that mean it is not really a set? Just one belt?
Or are there 2 different ways to underdrive? My pulley sits top dead center, on the alternator belt, but it is not the alternator pulley.
Do I pick Alternator?
The choices are: Underdrive/Stock, I picked Underdrive
The next one is a ??
Power Steering/Alternator
Does that mean it is not really a set? Just one belt?
Or are there 2 different ways to underdrive? My pulley sits top dead center, on the alternator belt, but it is not the alternator pulley.
Do I pick Alternator?

Coz
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Which as a result, can cause loss of HP & gasket oil leak. Anybody on this????
Last edited by andre12031948; Dec 7, 2010 at 05:56 PM.
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Not the Unorthodox Racing pulleys, you must be thinking of the cheap eBay ones. We've sold a ton of UR pulleys to replace those, and we sold people crank seals at the same time. UR pulleys also have a sleeve around the crank seal to avoid any type of leaking issues.
I went back to the stock pulleys after installing the vortech SC on my 5AT 04 Z. I did this because the blower supposedly will make more psi with the stock pulley. It hasn't been tuned since the switch but the car feels like it lags through the rpms. It used to shoot to redline quickly. Unfortunately, the dealership damaged my UR pulley crank pulley during removal.
Would you please provide me quote on just the crank pulley to 63011?
Would you please provide me quote on just the crank pulley to 63011?
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I went back to the stock pulleys after installing the vortech SC on my 5AT 04 Z. I did this because the blower supposedly will make more psi with the stock pulley. It hasn't been tuned since the switch but the car feels like it lags through the rpms. It used to shoot to redline quickly. Unfortunately, the dealership damaged my UR pulley crank pulley during removal.
Would you please provide me quote on just the crank pulley to 63011?
Would you please provide me quote on just the crank pulley to 63011?
Coz


