Originally posted by Paul Kienitz:
You can't claim a lightened pulley changed your quarter mile time if the comparison also includes a smaller pulley diameter.

Come on, think about the physics for a minute. That's like claiming your performance in pushing a half-ton sled across a frozen lake was improved by wearing a lighter hat.



you wering the lighter hat will not effect the movement of the sled however if you removed a small amout of weitght from the sled it will effect it just like the UDP and yes the Esslinger pully is lighter and a smaller diameter

guess the quarter mile improvements that Sleeper and I had were a fluke as were my dyno gains too


and paul if you would be coming to the national meet I would be more than happy to take my car down the strip for a run or two with my UDP on and then in the pits swap back on the stock pulley and see what it does, maybe just maybe it would make you believe that is what it does... however I bet you would say it was a change in temps or something or some freak change in track conditions.

2003 Subaru WRX some mods Even if you don't have the answer, you certainly have to admire the problem. aka ZetecRacing