Quote:
quote:Originally posted by ptgtcb
With drilled rotors you are also losing braking surface area and most race cars increase the size of the rotor to compensate for the loss of surface area. You are not going to gain anything by installing stock size cross drilled rotors on your street car and for the track(road track/autoX) I would guarantee they will warp and/or crack. For drag maybe since you are reducing weight but that is very minimal and you will lose stopping distance. If you want to increase your braking capabilities then save your money and buy a brake conversion that includes larger diameter/width rotors and calipers with larger or multiple pistons to increase brake force. The S.S. brake lines do work better since they do not expand and allow a more force to be applied to the brakes and I would do this before going to the drilled rotors. The cross drilled/slotted rotors will also wear your pads much more quickly and increase the brake dust problem everyone complains about. I have to admit that our cruisers could use better brakes!
Just my 2c worth. 
|
I think that you are missing the point of Cross Drilled and Fire Slotted (also called Gas Slotted) rotors. The purpose of cutting the holes and slots are to INCREASE the contact between the pad and the rotor. When you brake, gas is released from the brake pads when they heat up. This gas creates that is released keeps the pad from contacting the surface of the rotor and it appears that your brakes are "fading" when they are actually "gliding" on the gases. The cross drilling and slotting remove the gases from between the pads and rotors to provide a better direct contact between the rotor and the pad.
It is very similar to an ice skate. The friction (heat) from the blade over the ice causes the ice under the blade to melt. Skaters are actually gliding on a thin sheet of water, similar to the gas in the braking scenario.