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12-11-2011, 12:59 PM | #1 |
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Grooved Brembo Rotors, where do I get them re-surfaced?
I managed to burn through my front pads at the track this weekend and subsequently trashed the inside of both front rotors. Where do I get these re-surfaced? I used to take normal rotors to a dealership or auto parts but I don't know if they can accommodate this huge rotor or if I trust them with it.
I'm in Houston, TX if anyone knows of a place locally. Thanks
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12-11-2011, 04:24 PM | #2 |
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Not sure if its going to be worth it. I think the issue you're going to run into is the rotor run out after you machine them will be beyond spec. I know Stoptech allows for 2mm of wear before replacing the discs. I'm sure Brembo's spec is similar.
Anyways...I don't think you should machine 2pc drilled/slotted rotors although some people say they have.
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12-11-2011, 04:45 PM | #3 |
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.
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12-11-2011, 04:48 PM | #4 |
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Are those pads actually down to and into the metal?
Unless the grooving is much worse than the photos show, the rotors look usable so long as they're not too thin. New pads will conform to the grooves. It's not optimal, but it'll do. |
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12-11-2011, 04:55 PM | #5 | |
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I'll post as pic of that one in a few. Would a hard pad like a Pagid Yellow clean these up or would it just chew up the expensive pad sooner?
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12-11-2011, 05:18 PM | #6 |
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Pulled the other (drivers side) caliper off - It turns out that the grooves in the first rotor picture are actually lines of pad material. It takes some work but I was able to scrape some them off with a plastic razor and then the rotor was pretty smooth, at least in my little test spot. This side also still had a very small amount of pad material left so it wasn't metal to metal.
The other rotor (bottom pic) has a pretty rough feel in some areas but it's not too bad.
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12-11-2011, 05:24 PM | #7 |
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Wow! How much pad material did you have prior to the track day? Around half? Quarter? And which pads were you running with the Brembos?
That direct metal-on-metal must have been NOISY at the end of the fourth run! Glad you're ok and didn't have an incident in a braking zone. According to some of the guys on here, some BBKs require a new set of rotors (or "friction rings") with every three or so sets of pads, so you might have been coming due for new rotors anyway. |
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12-11-2011, 05:53 PM | #8 |
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Measure the thickness of the rotors, and check against the min limit. You may be fine.
Even if you have a BBK, you really need to run a proper track pad. There is no such thing as a dual-use pad (as you've just discovered). Be safe |
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12-11-2011, 06:10 PM | #9 | |
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12-11-2011, 06:17 PM | #10 | ||
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It really wasn't that loud - I just felt the pedal go limp and pulled into the pits. Quote:
I'll probably buy another set of DS2500's for the street and some Pagid RS19 or RS29's for the track. Should I run track pads in the rear or just the front? My rear pads have a ton of compound left. Any thoughts on Pagid vs PFC or any other popular pads for the Brembo kit? I've been reading up on them but there are a million conflicting opinions. The big thing that I need to figure out is if I need to buy new rings or not.
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12-11-2011, 06:20 PM | #11 |
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I'm at 33.64mm on the metal to metal rotor and 33.68mm on the other. Min is 32mm
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12-11-2011, 07:10 PM | #12 |
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sorry bud, hope it works out for you!
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12-11-2011, 07:49 PM | #13 | |
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It's hard to recommend a pad to someone because people like different things about different pads (initial bite, modulation, release, etc) - it sounds like you've already come across this with the research you've done so far. However, personally, I've had great success with PFC 05 and 01 compounds on my e92 (PFC BBK) and e46 (AP BBK) M3s. I also like Carbotech XP14 but that compound wears a little more quickly than PFC compounds. |
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12-11-2011, 09:14 PM | #15 | |
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I hope you weren't charging down the front straight on TWS when your pedal went limp...not fun.
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12-12-2011, 07:23 AM | #16 | ||
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I'm looking into all of this more today. It's my understanding though that a track pad driven under temp will act as a lathe and clean the rotor enough to bed-in correctly. Then when the track pads cool they will clean the rotor again in preparation for the street pads.
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j/k
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12-12-2011, 10:47 AM | #17 | |
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I think hawk makes a really hard blue pad or something but that will just take off the pad deposits. I don't think it will smooth out your rotors. IIRC....those things weren't cheap.
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12-12-2011, 11:56 AM | #18 | |
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I've used Pagid RS19's on M3 stock brakes all the way around and on the front of my Mustang GT Brembo and they stop just fine on the street. The M3 stock brakes squealed like a school bus with RS19's, but the Brembo's have been quiet. |
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12-12-2011, 02:52 PM | #19 | |
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I just ordered a full set of Pagid Yellow RS29's from Craig. My plan now is to let these clean up the rotors some, bed them in and get back on the track. What is the best tool for compressing the pistons? I've always used a c-clamp but I've never done this on a brembo with a custom candy apple finish. Also do I need any other parts or products to install these pads?
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12-12-2011, 03:03 PM | #20 | |
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http://www.girodisc.com/Caliper-pist...er_p_5970.html They work great and save a lot of time & agro. |
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12-12-2011, 04:22 PM | #21 | |
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If you undo the master cylinder cap and have strong fingers...you should be able to compress the pistons by hand. If not, a prybar with a rag works. BTW, you might want to invest in some titanium backing plates. They help to prevent your calipers from turning brown...if you want to protect the pretty paint.
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12-12-2011, 04:25 PM | #22 |
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Thanks for the tip I'll look into that!
I can also probably muscle the pistons back in - I just like to buy the right tool when I can but at over 200 bucks, I dunno...
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