Preferred rotors for track use, slotted or cross-drilled?
#2
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All things being equal, slotted rotors last longer. Holes in rotors promote stress cracks at the holes and once the cracks join 3 or more holes, or, go to the rim, you replace the rotors. Slotted rotors don't crack. OTOH rotors with holes cool better than slotted ones so if you have a marginal cooling situation brake wise, rotors with holes will work better. Racers usually prefer slotted rotors.
#5
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I agree with Bob and Jack, and I have slotted rotors. Drilled rotors do not last long on my car.
Chrisp: You are trying to balance heat sink versus quickness of cooling. It is difficult without taking data or knowing the heat requirement (track, car, and driver dependant) weather a heavier rotor is better.
Chrisp: You are trying to balance heat sink versus quickness of cooling. It is difficult without taking data or knowing the heat requirement (track, car, and driver dependant) weather a heavier rotor is better.
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#10
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Hey;
Said it many times before. Umm... what everyone else said. Wouldn't have holey rotors for anything, unless that's all I could get. Not much chance of me needing tham for any car I'll ever own.
I'd do more ducting before looking at drilled.
I buy Zimmerman OE rotors and slot them myself. They work VERY well.
- 84 944 w/ 86 Turbo brakes.
Said it many times before. Umm... what everyone else said. Wouldn't have holey rotors for anything, unless that's all I could get. Not much chance of me needing tham for any car I'll ever own.
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I buy Zimmerman OE rotors and slot them myself. They work VERY well.
- 84 944 w/ 86 Turbo brakes.