08-19-2018, 11:09 PM | #1 |
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Bleeding brakes
I am running stock pads with Motul RBF600 fluid - two track days so far and pedal feel has been pretty good, even if a bit more stopping power would be nice. I did get some occasional vibration during the last event which I think was due to rotor deposits.
Question is... who here thinks its necessary to bleed after each event? I did so after my first event (might explain why they are holding up so well?) but I’m not sure if I truly need to do it before every event. Lots of different opinions.. what’s your take? |
08-20-2018, 12:50 PM | #2 | |
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For me, I boiled my stock fluid on my second track day (pedal felt spongy and was going uncomfortably close to the floor). Once I upgraded to Castrol SRF, I haven't had to change it since. I'm also running track pads. |
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08-20-2018, 08:50 PM | #3 |
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Exactly what he said, if it has not boiled depending on the quality it can last a long time (I try to change it every year if not boiled, average 10 track days per season)
My friend has the same vibration problem in is 2017 M2 after 3 track days and from my searching its pad deposit, solution is replacing the pads and you should be fin afterwards. Don't forget the front caliper have two bleeders on them !
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08-20-2018, 09:32 PM | #4 | |
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My advice would be to bleed your brakes every time before you track as part of your pre-track prep. that is not to say that if you daily your car, after a hot track event, you should also bleed your brake. Change your fluid every 2-4 events. I don't like Motul. Try ATE fluid, they are awesome for me at least in the Subaru. |
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08-21-2018, 09:03 AM | #5 |
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Thanks for the feedback. I can't be sure if I boiled my fluid... I didn't get pedal fade, it was more the vibration towards the end of the second event that held me back.
Either way, both track days were extremely hot, so I will play it safe and bleed given this next one is my last meet for the season. W/ track pads and a full flush before next season starts, hopefully I can go 2-3 events before bleeding again |
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08-21-2018, 01:15 PM | #6 | |
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Although you can go 2-3 events, I strongly recommend that you take the time to bleed them every event. Its a small time investment vs the risk you are taking. you will find that there will always be a little bit of air formed from moisture and heat built up from your tracking activities and daily driving. Good luck. |
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08-23-2018, 01:17 PM | #7 | |
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08-23-2018, 01:34 PM | #8 |
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ECStuning sells a power bleeder. Best money I have spent on a tool like that.
Yeah, no need to take the car anywhere. Get yourself a good car jack and 4 stands and you are good. |
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08-25-2018, 04:45 PM | #9 | |
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08-30-2018, 08:26 AM | #10 |
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I haven’t tracked the M2 yet, but on my TT RS track car (20-25 track days a year) I use Castrol SRF with Pagid Yellow RS29 brake pads. I usually bleed the brakes every 4-6 events or right after I feel the pedal go soft on track. SRF has allowed for longer bleed intervals. I plan on the same regimen for the M2 when I start tracking it.
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09-05-2018, 03:11 AM | #12 |
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I use RBF600, I tend to bleed the system every 3 events, my events are full weekends so 2 days 4 sessions per day and 20 mins per session. That interval works for me.
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