Remapping ECU

[Anker]

Cross drilling is for heat dissipation. Allows air to circulate through the inside of the rotor.

Anker

[Gelbster]

Originally Posted by Anker

Cross drilling is for heat dissipation. Allows air to circulate through the inside of the rotor.

Anker

Depends how big he makes the holes ! :-)

[bwdz]

Originally Posted by Anker

Cross drilling is for heat dissipation. Allows air to circulate through the inside of the rotor.

Anker

Don't buy into that myth, it does not. Read up on it or go the track with your infrared thermometer. It is just for weight reduction because they had to make the rotor larger and thicker.

[JFP in PA]

Originally Posted by bwdz

Don't buy into that myth, it does not. Read up on it or go the track with your infrared thermometer. It is just for weight reduction because they had to make the rotor larger and thicker.

Both are incorrect; the rotors are cross drilled to allow gases to escape from between the pad and rotors. In dry conditions, the primary gas generation is from the bonding agents that hold the pad together. In the wet, steam is added from the heat. In either case, gas generation between the pad face and the rotor tends to push the pad off the rotor, with a significant loss of breaking effort. Give the gas somewhere to go, and the problem goes away.