front brake rotors 964 turbo
11-07-2007, 11:00 AM
#33
Rennlist Member
the claim is that when the rotors were put on, the bolts were overtorqued (something like 125 ft pounds vs. a recommended 90-something) and this caused the rotors to go out of round.
the shop (www.schulba.com) is a german brake specialist. two reputable porsche wrenches (German Tech in Largo, FL and Heyer Performance in Mountain View, CA) could not identify the root cause of the warping.
on the one hand, I'm glad that there's a shop with brake experience who is insisting on tackling the problem and doing it right. on the other hand, it feels like a money black hole if they're wrong and that the first response on Rennlist is that they're probably wrong.
the shop (www.schulba.com) is a german brake specialist. two reputable porsche wrenches (German Tech in Largo, FL and Heyer Performance in Mountain View, CA) could not identify the root cause of the warping.
on the one hand, I'm glad that there's a shop with brake experience who is insisting on tackling the problem and doing it right. on the other hand, it feels like a money black hole if they're wrong and that the first response on Rennlist is that they're probably wrong.
When buying OEM parts some people try to pull a fast one and infer the parts are OE and although made by the same company who makes the parts for Porsche might not be to the same specifications.
Just like Speedline and BBS manufacture wheels for Porsche sold with Porsche part numbers. You can also buy similar looking wheels made by these companies and they might not meet the same criteria as the Porsche wheels.
11-07-2007, 12:13 PM
#34
Burning Brakes
Join Date: Jun 2001
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the claim is that when the rotors were put on, the bolts were overtorqued (something like 125 ft pounds vs. a recommended 90-something) and this caused the rotors to go out of round.
the shop (www.schulba.com) is a german brake specialist. two reputable porsche wrenches (German Tech in Largo, FL and Heyer Performance in Mountain View, CA) could not identify the root cause of the warping.
on the one hand, I'm glad that there's a shop with brake experience who is insisting on tackling the problem and doing it right. on the other hand, it feels like a money black hole if they're wrong and that the first response on Rennlist is that they're probably wrong.
the shop (www.schulba.com) is a german brake specialist. two reputable porsche wrenches (German Tech in Largo, FL and Heyer Performance in Mountain View, CA) could not identify the root cause of the warping.
on the one hand, I'm glad that there's a shop with brake experience who is insisting on tackling the problem and doing it right. on the other hand, it feels like a money black hole if they're wrong and that the first response on Rennlist is that they're probably wrong.
Seriously, that front hub must be at least 5 inches deep and it's damn strong, how the heck would you be able to warp the disc by pulling the wheel nuts too hard, even if you really wanted too?!
If they know that the warping was caused by the wheel nuts where too tight, why then say you should use genuine Porsche pads, they allready found the problem?!
My experience is that shops sometimes feels they need to deliver a quick answer, they found the wheel nuts to be tighter than normal, so that's got to be the problem....
I had my share of warped discs, each and every time I could relate it to heat or excessive wear on the disc (cracked all the way through). Since our cars are heavy and have lots of hp we (or at least I can't) run pads like Blue Pagid and Carbopad since they generate to much heat.
But, this is on the track, on the street I can't see how you would be able to warp a healthy disc with any pad unless you "slam dunk" break from 150mph over and over.
