Quote:
Originally Posted by bptuner
Is there a replacement hat that is lighter for stock rotors? You could match up to the DBA rings.
Ive heard DBA's overheat quickly.
|
NO there is not. The design on the GIRODISC is such that the actually rotor hat is made out of lighter materials and is BIGGER than the hat on the stock ZL1 rotor. THAT way they maximized the weight savings. The overall diameter of the rotor though is still 390MM or 15.35 inches. What that means of course is the actual WIDTH of the rotor pad contact surface is slightly NARROWER. A FRONT girodisc rotor takes the same pad width as a SS 1LE setup.
The STOCK design relied heavily on the MASS of the rotor to help dissipate the heat during the braking process. The GIRODISC rotor has MORE cooling vanes and since it is almost 5 pounds lighter it DOES NOT require the same amount of energy to slow down or bring the rotor to a stop.
STOCK ZL1 rotors are NON-DIRECTIONAL and GIRODISC rotors ARE directional with a different part number for the driver and passenger side rotors.