Ebay cross drilled & slotted rotors
02-09-07, 03:17 PM
#26
had brembo drilled and slotted rotors with performance friction semi metallic pads on the blue rx7 from 1995 to 2000. a few auto-x and about 8 track days. the drilled holes started cracking around 1999. great braking system.
after the hawk blues went on more and longer cracks showed up.
after turning them on a lathe, within specs, i came in after first session on the track. cracks were more pronounced. every hole had at least a minute crack. every one. had to get new stock rotors and bearings on there asap.
in racing circles the generally agreed policy is don't drill. just slot to clean the pads and allow pad gasses to pass.
yes porsche still drills rotors. that doesn't mean it's the best way to go though. there are benefits, and flaws to drilling. i think porsche and ferrari do it for the wow that looks cool factor too.
ford still sells shitty cars too. that hasn't changed my mind not to buy their car either
after the hawk blues went on more and longer cracks showed up.
after turning them on a lathe, within specs, i came in after first session on the track. cracks were more pronounced. every hole had at least a minute crack. every one. had to get new stock rotors and bearings on there asap.
in racing circles the generally agreed policy is don't drill. just slot to clean the pads and allow pad gasses to pass.
yes porsche still drills rotors. that doesn't mean it's the best way to go though. there are benefits, and flaws to drilling. i think porsche and ferrari do it for the wow that looks cool factor too.
ford still sells shitty cars too. that hasn't changed my mind not to buy their car either
02-09-07, 08:24 PM
#28
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Originally Posted by matts85rx7
Ok, simple enough,
Porsche- uses drilled brakes on its GT3 911, a track car that has been BARELY modified for street use, the Cayman S, one of the best stopping vehicles period, most porsches use these.
Ferrari- EVERY vehicle uses them, even the TRACK enzo.
BMW- Well, the M5 uses them, as does the M3 GTR V8, a TRACK CAR.
The list only grows longer.
Porsche big reds brakes, MEANT FOR TRACK USE ONLY, with track only pads, you guessed it, drilled. I will go with their race proven heritage any day.
Porsche- uses drilled brakes on its GT3 911, a track car that has been BARELY modified for street use, the Cayman S, one of the best stopping vehicles period, most porsches use these.
Ferrari- EVERY vehicle uses them, even the TRACK enzo.
BMW- Well, the M5 uses them, as does the M3 GTR V8, a TRACK CAR.
The list only grows longer.
Porsche big reds brakes, MEANT FOR TRACK USE ONLY, with track only pads, you guessed it, drilled. I will go with their race proven heritage any day.
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