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Cool carbon + ss lines. First impressions
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03-16-2009, 05:31 AM | #1 |
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Cool carbon + ss lines. First impressions....and follow up.
Based on the positive feed back I read here and there, I changed the pads (front and rear) the lines (Sportech) and the oil (Motul RBF) to my 335 (e92).
Well after bedding them, a couple of days and 120 miles on, I can say that so far I regret the OEM. Pads do squeal at low speed and in the city driving this is annoying. The overall bite and pedal feeling is somehow worse than OEM. Maybe they will improve going forward (I do hope so). I did not use any anti-squeal paste because my man at the service says they will melt and leak under hot brake conditions. Any direct experience if this is true? any alternative suggestion for the squeal? Last edited by wilkoal; 03-30-2009 at 09:46 AM.. |
03-16-2009, 09:45 AM | #2 |
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Subscribed. I was thinking of doing these same upgrades... and want more feedback.
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03-16-2009, 10:20 AM | #3 | |
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03-16-2009, 10:36 AM | #4 | |
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I did bed them using religiousely this recommended method http://zeckhausen.com/bedding_in_brakes.htm As to to anti squeal foam and cream they might work at the beginning but after a while they do melt under high temperature. (btw never them in racing teams paddocks!) |
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03-16-2009, 10:51 AM | #5 | |
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Noisefree works great. I haven't noticed anything melting off other than my brake boots.
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03-16-2009, 12:33 PM | #6 | |
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The anti-squeal product I listed doesn’t melt or doing anything but the dust boots do melt. Orb Last edited by Orb; 03-17-2009 at 03:18 PM.. |
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03-27-2009, 10:16 PM | #7 |
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Attached are the instructions for installation and bedding for Cool Carbon brake pads. If you follow the installation instruction you have no problem with noise for the life of the pad. The bedding instructions are specific as noted. It takes 10-15 stop to do the first and subsequent bed in (2-3 times). I would suggest you take it up to 70 MPH at the very minimum (I personally used a higher speed of 80 MPH). These are race pads requiring a race pad bed in. Following the Zeckhausen instruction means then never even came close to bedding the brakes in.
To the OP, you got some bad advice and never followed the instructions. Orb Last edited by Orb; 11-25-2011 at 12:09 PM.. |
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03-28-2009, 12:42 PM | #8 |
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The thing I'm trying to understand is... why are you using this pad on the street?
Isn't this a track pad? I chose to run EBC yellowstuff on my Rotoras, but I made the decision to go with a pad that I can use on the street and also on the track. Of course, I lost the initial bite of the OEM pads, because my pads are going to have a higher temp range. I believe the same goes for these.
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03-28-2009, 01:25 PM | #9 | |
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The difference between the OEM pad and Cool Carbon for feel is they have linear bite unlike the artificial non linear bite of the OEM pads. On the track the OEM pads have the high initial bite which leads to ABS then the bite falls like a rock immediately which is inconsistent from corner to corner. The Cool Carbon are very easy to modulate and rock solid for consistency. The release under trail braking is their strongest attribute which ideal for this heavy car. The friction levels for Cool Carbon are about 0.37 and the OEM pads are 0.32 when dead cold. The yellow stuff is okay for the street but not even come close to DS 2500 or Cool Carbon when cold. The dust is a lot lower than the OEM for day to day driving. The formulation of the material was only released last year so it using some of the newer technologies when compared to other pads that are now 5-10 years old in formulation. Cool Carbon only makes pads for Porsche and BMW cars. The pads are much more popular with the Porsche crowd that track at the moment. You might see some BBK application in the future as well but that is uncertain. Orb Last edited by Orb; 03-29-2009 at 01:02 AM.. |
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03-29-2009, 10:25 AM | #11 | |
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Interesting. It would be nice if they made them for the Rotoras so I could try them out. The yellows are pretty good but the cold stop is significantly worse than OEM. Once the yellows heat up, they are pretty damn good.
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03-30-2009, 09:47 AM | #12 | |
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(Update) I now have had the above upgrade for a while and I can reasonably state that overall performance has improved although some minor squeal shows here and there at low speed. Pedal feel is is significantly firmer than oem, most likely due to SS lines. I have not got yet the chance to test fading-resistance down hill or in track. Will let you know. |
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03-30-2009, 03:16 PM | #13 | ||
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03-31-2009, 03:54 PM | #14 | |
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Anti-squeal compound
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2) We have had very good success (even on track days) with the new Permatex Ceramic Extreme brake parts lubricant. It's the purple stuff. It's stays put to something over 1800°F, which is long after the pads have completely faded away. All the other stuff we tried just gets cooked and flakes off. http://www.permatex.com/resource_aut...o_05092007.htm Good luck, Chris |
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