Quote:
Originally Posted by Tcoat
The minuscule advantage that a light weight pulley offers is lost the second the car is put in gear. Any gear. As soon as the engine has to rotate a flywheel, clutch disc, transmission gears, drive shaft, differential, axles, wheels and all the shafts, joints and other moving parts involved the fact that you saved a pound in rotating mass in a pulley isn't even noise much less measurable.
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No matter what anyone feels in neutral in the driveway, the physics are inescapable. The need for damping is paramount, no matter what anyones matketing dept says about the factory pulley's function. I have seen first hand how things go sideways when vibrations get out of hand on high horsepower, industrial rotating equipment. It's ugly
Controlling higher order harmonics means more to me than blue anodizing. Fluidampr, all day long. Track car gets UOA after every change (every 3rd event) and there is almost no bearing wear metal after 2years and somewhere north of 7,000 miles on track. (24k miles total on car).