08-14-2009, 07:13 PM
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#1 (permalink)
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Banned
Join Date: Aug 2009
Location: CA
Posts: 495
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Quote:
Originally Posted by Mike
I now run slotted dba rotors. If there was a true benefit to cross drilled, would the corvette cross drilled rotors truly be non directional? One side of the car goes the right way and the other the wrong way , as they only have front and back rotors, not left and right. Holes just look cool.
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You will not find a single production-car with cross-drilled rotors with both the left and right side holes going the "right way." Mercedes, Ferrari, Lamborghini, etc. (besides...most brakes on high-end cars are sourced from the same manufacturers), all use the same exact rotor for the right and left side. It does not make any sense economically to manufacture two different rotors.
That said...cross-drilled rotors provide no added benefit over standard rotors. If anything, they give you less surface-area for the pad to contact as well as less mass to dissipate heat, as mentioned above. There is a perception of higher performance with drilled rotors vs. conventional, but that's all it is. Properly slots provide more benefits over holes.
Although this is admittedly a weak argument, take a look at any race-car's brake setup or the high-end BBKs for cars (not just the pretty ones for people who want to look cool). I can promise you that you won't find drilled rotors.
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