I own a 2002 gsxr 1000 and after showing off by doing a rolling burnout by slipping my clutch at 8000 rpm my bike started to make a strange nocking noise but only at around 3500 rpm and goes away around 3700 rpm and comes back around 7000 rpm. It's fairly loud and I can't figure out what could possibly be causing the noise. I'm sure its not coming from the crank case and the strangest thing about it is that it won't make the noise unless the bike warms up past about 110 degrees. I would appreciate any comments for help. I am hoping to get a video on here so you can hear the sound too.