Originally Posted by loopedout

Hey Steve got an odd thing happening to a guy at my local track. Running a 3.5r sintered rotor on 6 cell 4200's with a GTB, anyway last Sat about two min's into the main, car just stops, well the rotor blew basically. The rotor was in about 20 pieces. So today, he buys a brand new rotor, runs a pack through it, no prob, second pack, two laps bang, same thing, rotor just blew apart. I'll attach a pic later. He bought a new 3.5 motor and ran the rest of the night with no issues. So he was wondering what is causing this exploding rotor syndrome?