Originally Posted by InfiniteVTec
Okay okay... wow i better not drive fast if these items (a.c. and p/s) need to be operated at a certain speed. According to your logic, faster speeds, turbo, superchargers would destroy everything that the crankshaft spins.
These systems are driven by the crankshaft speed. Also the Alternator is NOT underdrived by these pulleys on several models.
They're not harmonically balanced, that will only reduce longevity in the long run. I don't think people mod their engines for racing and expect it to last for ever. 5whp isn't a lot but it's been proven on the dynojet and for the price it's nice.
actually under driving your P/S and Alternator does put alot of stress on the components. Your logic behind the turbo and superchargers is retarded. A: a turbo isnt spun by the crankshaft...B: the speed at which a supercharger spins is directly proportional to the diameter of the pulley. Changing pulley size therefore dictates the amount of pressure created by the supercharger. That is what it is for. Now your alternator and P/S pump are made to run within a certain RPM range dictated by the diameter of the crank pulley and the diameter of the pulley on said device. When you underdrive you effectively spin the p/s pump and or alternator faster than they were ever intended to be spun, and for lengthy periods of time.
Please stop giving shitty advice out because you think you know what the fuck you are talking about. You wanna underdrive your shit...thats fine its your car. Do not however try to shoot down what other people have to offer based on real life experience and knowledge because you think you got 5whp out of an overdrive pulley.
now if you want to get lighter weight pulleys but keep the same effective diameter than by all means. Less rotational mass is always a good thing.
:closed: