Toyota labels the front brake discs on the Supra as left and right, in a way that the spiral vents are curving "into" the direction of rotation, as shown at the bottom of this page:
http://www.mkiv.com/specifications/ncf/ncf93/ncf168.jpg
According to AP brakes, such discs should be installed with the cooling vanes running back from the inside to the outside diameters in the direction of rotation, as shown here:
http://www.apracing.com/car/brakedisc/identification.htm
Reg Riemer, MKIV Supra road racer and 4th placer finisher of the 2000 One Lap of America, agrees. Reg says from his experience road racing his Supra, that the front rotor warping problem went away when he reversed his rotors.
Wilwood brakes agrees with AP and Reg:
http://www.magnumforceracing.com/store4/wilwood_disc_brake_rotors.htm
So does Baer:
http://www.baer.com/rotors/
http://www.baer.com/faq.shtm
So does Bavarian Autosport:
http://www.bavauto.com/inst/UltimateRotorsM3.pdf
In fact, not a single site I've been able to find on the net agrees with Toyota on the front rotor labeling.
I guess this means I should reverse my front rotors? Heh..
Thanks,
Andi
[ August 19, 2001: Message edited by: Andi ]
http://www.mkiv.com/specifications/ncf/ncf93/ncf168.jpg
According to AP brakes, such discs should be installed with the cooling vanes running back from the inside to the outside diameters in the direction of rotation, as shown here:
http://www.apracing.com/car/brakedisc/identification.htm
Reg Riemer, MKIV Supra road racer and 4th placer finisher of the 2000 One Lap of America, agrees. Reg says from his experience road racing his Supra, that the front rotor warping problem went away when he reversed his rotors.
Wilwood brakes agrees with AP and Reg:
http://www.magnumforceracing.com/store4/wilwood_disc_brake_rotors.htm
So does Baer:
http://www.baer.com/rotors/
http://www.baer.com/faq.shtm
So does Bavarian Autosport:
http://www.bavauto.com/inst/UltimateRotorsM3.pdf
In fact, not a single site I've been able to find on the net agrees with Toyota on the front rotor labeling.
I guess this means I should reverse my front rotors? Heh..
Thanks,
Andi
[ August 19, 2001: Message edited by: Andi ]