Whats a Pulley
Team Owner
Joined: May 2000
Posts: 25,343
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From: Frisco, TX
Near the front bottom of your engine (close to the radiator) is a pulley that spins the belt which turns various other accessories (e.g., power steering, air-conditioning, etc). The pulley is actually attached to the front of the crankshaft, which is internal in the motor and is spun as a result of the combustion. Some folks change their pulley to what is often called an "underdrive pulley," which might modestly reduce the amount of power the engine has to expend to turn the accessories. I think the theory of this is that in doing so, there is thereby more power for moving your car down the road.
Peace.
Peace.
Retired & lovin' it!
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From: Jackson NJ
Race Director
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From: Hudson WI
NCM Sinkhole Donor
Drifting
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From: Austin TX
SteveL2---
not to be a smart a$$, but pulleys are also on the alt, ac, and other things if you have a supercharger or something like that. underdrive pulleys actually refer to all the pulleys working together.
from a fellow texan...hook 'em
not to be a smart a$$, but pulleys are also on the alt, ac, and other things if you have a supercharger or something like that. underdrive pulleys actually refer to all the pulleys working together.
from a fellow texan...hook 'em
Team Owner
Joined: May 2000
Posts: 25,343
Likes: 222
From: Frisco, TX
I figured he was referring to the crank one because most folks mentioning getting a "pulley" are at least changing the one on the crank. Or, as you aptly point out, if they have a supercharger, then they can do the same thing on the blower, but since this is not the Forced Induction section I guessed that we weren't going there.
And, as far as that hook 'em thing goes....
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Verdad Gallardo
Instructor
Joined: Dec 2005
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From: Shelburne Vermont
Pulley on C6 manuals only
A Pulley is used only on manual C6's. A shift from First to Second, Third to Fourth, or Fifth to Sixth is usually refered as a Pulley. Further, when they refer to an undersize pulley, they are refering to a short throw shifter.
Last edited by SERENITY_NOW; Jan 19, 2007 at 09:41 PM.
Race Director
Joined: Aug 2005
Posts: 13,592
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From: Hudson WI
NCM Sinkhole Donor
OK, so my B&M shifter is really an under sized pulley. That explains everything now.
Last edited by timd38; Jan 20, 2007 at 02:51 PM.
