At least for short term performance. Still skeptical about the thing
taking long term heat.

http://www.rx7club.com/showthread.php?t=752927&highlight=aluminum+rotor

They made 830ish on a turbo 2 rotor with the aluminum rotors. Videos on
youtube.

Rob Woods

Yes the trick is making them hollow to cut the weight and having cooling passages.

Paul Lamar

 Hi Paul,
  Just wanted to remind You about sending me rotor (with gear etc.) drawing or 3D model so we can start with that Ti rotor saga.

 Thank You
 Ted

OK Ted it may be a few days as I am installing a funace in my house.
Rob Woods may already have a deg.

Paul Lamar