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Old 05-16-2021, 07:41 PM   #1
NLZN21
 
Drives: 2009 370z
Join Date: Jun 2019
Location: KY
Posts: 27
Track weekend braking issues

Thurs night I installed pre-bedded xp10/8's to new rotors (did the material transfer process, much quicker with the prebed pads) and with a fresh swap to RBF 600.
Event started Saturday, scca regional time trial @ NCM. For some added info I'm a solid intermediate track driver and avid autox'r. Car is a 19 Ltg 1LE, stock on 265 re71s.
I noticed towards the end of the day Saturday that I was getting increased pedal travel, decreased braking performance and decreased pedal resistance. I did a quick 4 corner caliper bleed Sunday am before the first session, rear was clean, front was darker and I did get a bubble or two out of the fronts. Topped off with some fresh rbf600 and went back out.
Needless to say it didn't get much better, might have gotten a bit worse. With the car on, I can apply pressure to the pedal and eventually it will get almost to the floor. I'm assuming I may have boiled up some fluid?
Thoughts on the 10s getting overly hot? Should I swap to running xp12s square vs 10/8? That brake fluid is DARK, check the pic.

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