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+--- Thread: Replacement Brake Rotors (/showthread.php?tid=1840)
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- JoeP - 08-25-2009
Has anyone tried the following brand of brake rotors?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220461196441
They appear pretty mundane, except that they powder coat the non-contact surfaces of the rotor. Thanks.
- Porshagod - 08-25-2009
You can also try these, that should work almost as good and at substantial $$$ savings.
http://www.vertexauto.com/ShowItem/1053%20X-Drilled%20Brake%20Rotor%20Front%20Left%20911%20C2%2C%20C4.aspx
- sebastiangeller - 10-10-2009
thanks for that
- bobt993 - 10-10-2009
Joe, If your going to track the car stick with OEM or go to two piece units that are properly machined. For street use you have more options.
- JoeP - 10-10-2009
Thanks. I did go with OEM this time. This aftermarket brand looked attractive because they are slotted (which should crack more slowly), and the non-wear surfaces were powder-coated (so they would never get that little bit of rust like OEM). I also (a) moved up to Hawk pads, © removed the backing plates, and and © installed bigger deflectors on the A-arms to direct more air toward the rotors. I'm ready for Thunderbolt.
- bobt993 - 10-11-2009
Joe,
Be careful removing the backing plates or at least leave shielding around that little sensor going into the wheel carrier. I believe your car has ABS and if so, it is very easy to damage that sensor from rotor dust (molten metal). The ABS sensor is expensive too! (what isn't on a Porsche).
- ninjabones - 10-12-2009
I agree with Bob with regard to leaving the backing plates in place, especially if you drive the car on the street and/or in the rain on the track. Some people remove the plates for percieved increase in air-flow and subsequent cooling. If you don't have an overheating problem, I would leave them in place (even if you have an overheating issue, I would probably address via a different mechanism first).
The real question is, do you have an overheating problem and how were you able to diagnose it (are you cooking the fluid, are you feeling pad fade, under what circumstances, have you measured rotor temps with a pyrometer, are you overbraking, etc)? Each of these issues can be addressed without necessarily removing the backing plates, such as: titanium shims behind pads (shield calipers from heat transfer, at the expense of higher retained temps in brake pads), running different fluid like SRF, changing friction material to a higher temp compound like RS14s, running ducts to the rotors, etc).
I run ATE blue/gold fluid, pagid RS14 or RS19 pads on stock 993 NB calipers, stock porsche cross-drilled rotors, 3" ducts to the front rotors and have left my backing plates in place. I have yet to have any overheating issues.
- JoeP - 10-12-2009
Glen, I see no symptoms on track. The brakes are great. I'm simply trying to reduce cracking of the rotors. My thought is that things should improve if I can keep the rotors cooler.
- bobt993 - 10-13-2009
Joe, removing the backing plates may help a little, air ducts to the front nose would be better. The ABS sensors are about 110 bucks each, so you may end up not saving anything.
- Darren - 10-14-2009
You need to source some solid or slotted rotors from a reputable manufacturer. I hate the holes also...