Can you machine StopTech rotors to resurface them? If so, has anyone done this and who did you take your rotors to? I've got the 14" (355 mm) Aluminum hat rotors with a bunch of track days on them. They've got some small surface spider cracks. I'd like to get them resurfaced prior to the next track season.

Thanks for the help.

 

Why would you NOT be able to machine the rotor surface? Is there something unique about the rotors?

 

If he has drilled&slotted, I think he wants to know if it's still possible vs stock rotors....

 

u can done it wit wilwoods

 

measure the disk thickness first

 

^yep

 

Subscribing for answer. I have the 14inch drilled also...

 

Did it on my wilwoods, no problems and many track events after.

I would wait till they need it, warp, grooved etc etc you will get surface cracks again after the first track event. I did mine cause my track pads chewed up my rotors in the cold as hell 25 degree drive home from Streets of Willow. I change my pads at the track now.

 

Hope you haven't machined your bbk rotors yet.

The big brake rotors are a 2pc rotor design that is held together with a coned spring washer. This keeps tension between the aluminum hat and the iron rotor. With uneven forces from the machines that do the rotor turning, it can apply more pressure to certain spots of the rotor flattening out the washer leaving some places with a deeper cut than others, and possibly creating an uneven surface resulting in steering wheel shake and brake pedal pulsation.

If you have been running the rotors for track days, just keep running the rotors until the cracks become large enough to hook a fingernail onto. Then you know the cracks are too big, and the rotor should be replaced.