There have been some small running changes that should help prevent rotors exploding like that...but unfortunately when you're pushing things to the limit sometimes things just let go.
The replacement rotors that we sell will be fine for your motor. Either a 12.3 or a 13.0 mm will be good!
Originally Posted by
trailranger
I was preparing the car for a lipo pack by removing the bulkheads and milling off the nubs for sub-c cells and noticed my motor was scratchy when I turned it.
So took the motor, popped the endbell off and boy I had a mess. That sintered rotor looked like beach sand.
I didn't realize it was possible to have a semi-functional motor when the rotor is in a million pieces. The air flow issue may have caused heat in the GTB buy my reduction to gearing to 12:1 may have killed the rotor. I didn't free rev the motor but it doesn't mean it hadn't been either. The motor was one of those slightly used ones on ebay. Are the newer rotors better(not different)? Because this was one of the early 3.5 motors.