differences between crank pulleys?

[Cheks_Talon_TSi]

excuse my ignorance but what is the differences between a Undrive Crank Pulley and a Unhortodox Crank Pulley?

Last week my O.E. crank pulley split in two parts and I found an Unhortodox Pulley almost in brand new conditions on the dsmtrader and I bought it. I already install it with original size belts. But as far as I read here today, the undrive pulleys need smaller belts or what? ... by the why, what is better: unhortodox or undrive crank pulley? will it increase my HP that pulley?

Sergio G.

 

[midnght]

Some people do some don't. I think most people will tell you to go back to the stock pulley. I don't know about the belt thing, but I know our engines are is some need or a harmonic balancing. If you are talkng about hp I would say, not enough to possibly hurt your engine.

It is your car and run it the way you want. I am just passing on what most told me when my crank pulley took a shit on me. I just got it replaced with a OEM one. Cost less and did the job.