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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.

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View Poll Results: What to do?
Just bed in new pads. 1 12.50%
Resurface rotors. 2 25.00%
Replace rotors. 5 62.50%
Other. 0 0%
Voters: 8. You may not vote on this poll

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Old 05-09-2018, 03:44 AM   #1
mkodama
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To resurface rotors or not?

I overheated my pads at a trackday, have a pulsating pedal that hasn’t gone away with street driving or trying to bed the brakes again, and I have new track pads to go on. Brake system is currently stock performance package brembos and replacement rotors are $400 each so hesitant to just replace the rotors.

Do I just put on the new pads and bed them? Do I spend the time and money to have the rotors resurfaced? Other ideas?
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Old 05-09-2018, 04:29 AM   #2
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new rotors


google 'cementite'. it doesn't go away with turning the rotors.
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Old 05-09-2018, 09:08 AM   #3
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If it is confirmed whether these PP Brembos are standard STi sized, something like this would be a good replacement.

https://www.oakos.com/CEN-125-47019.htm
or
https://www.oakos.com/CEN-121-47019.htm

Centric blanks in 5x100 STi dimensions for ~100 or 180 a set. They also carry rears.

Edit: this thread indicates that standard STi rotors should be compatible
http://www.ft86club.com/forums/showthread.php?t=122138
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Old 05-09-2018, 11:40 AM   #4
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Quote:
Originally Posted by mkodama View Post
I overheated my pads at a trackday, have a pulsating pedal that hasn’t gone away with street driving or trying to bed the brakes again, and I have new track pads to go on. Brake system is currently stock performance package brembos and replacement rotors are $400 each so hesitant to just replace the rotors.
I had pulsating pedal with my rotors after a track day (stock brakes) - had them turned and now have 7 track days (one was very wet however - so count it as 6) on them since with no issues...

Before I had them turned, I thought maybe it was just uneven transfer. I tried re-bedding them : no help. Bought garnet sand paper and spent a bunch of time sanding the rotors to remove any deposits : no help. Had them turned : pulsation was gone.

This was stock brakes on my '13 and Carbotech XP10 pads. Before this experience I pretty much thought pulsation was always uneven transfer and very unlikely a warped rotor. Now - as mentioned above - might have been cementite but very superficial, or slight warping... YMMV.
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Old 05-09-2018, 12:09 PM   #5
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BBK Time!!!


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Old 05-09-2018, 12:54 PM   #6
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It's a lot less expensive to try machining first.
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