I been seeing a few posts on these and i read them all. i already have the pro drive gear in my car, i been running it for about 2 years now since the stock type R oil pump gear broke. im useing the stock crank pully and the stock flywheel on my car and i rev it to 8500 when i race. my question is how are are these pullies being reved to when they break? i remember reading about the one breaking just driving the car. im stressing out here.