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Discussion Starter #1
did a search and found that some shops will refuse to performance this type of work due to its risk of damaging the rotors. can someone confirm this?
i am considering to buy these rotors, prob. irotors or crossdrilled brembos. just want to have a good understanding of whats the deal with resurfacing them. any help would be great. thanks.
 

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Discussion Starter #3
anyone here has a porsche, amg, or one of those cars that has oem cross drilled rotors? what do your dealers do?
 

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I have some aftermarket cross drilled/slotted rotors and the only place that will even touch the brakes now is the local dealership just to let you know.
 

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it's usually a training and equipment issue. They usually stick them on a lathe and trim off the top layer, about .020-.050", depending on how badly it needs it. If you have holes or slots, you'll be messing with the edges of these, and it's hard to get the edges like they came. They can develop cracks and the slots will nearly diminish when resurfaced.

So it's hard unless you find a brake specialist. Ask guys at a local autocross where they get theirs done.


Kane
 

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hmm... my understanding was that CD rotors could be resurfaced whereas slotted ones cannot be.

for cd's some holes are drilled with the "funneling" (i forgot the technical term for it) and some are just straight drilled. for the straight drilled no problem. for those with the "funnels" you'll need a tool to re-create the funnel or live with a shortned funnel section.
 

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I believe the term you are looking for is "Chamfered". .. where the hard edge of the hole or what ever is radiused & rounded off, or beveled to ease the transition.....

i would think a lite milling of the rotor would not eliminate the slots or the chamfering on the drillholes too much at forst but after two or three turns it should have that effect to a degree...


so those of us with Cross Drilled & Slotted rotors are PHUKED?????

interesting & what a bummer...

edg
 

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I have the bradi cross drilled slotted and vented and had them turned after about 8000k miles because they developed a small vibration. I had my buddy at the local Lexus dealership do them. No problem whatsoever. It's not that they are hard you just can't take a huge cut at a time which some places will tend to do and they'll fuck it up. You just have to be patient and they can't be very bad. The best bet is to do them all the time that way they will last the longest.
 
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