Who makes directional drilled rotors for a C6 with the J55 HD brake option?

 

I just upgraded my C6 Base with the J55 option... Most parts places will list the J55 HD brake option as Z51, since the Z51 option includes the J55 HD brakes.. I bought the Powerstop Z26 Street Warrior system from Rock Auto. It is listed as:

POWER STOP K440026 (High Performance) Z26 Street Warrior; Includes Drilled & Slotted Rotors, Carbon-Fiber Ceramic Pads & Hardware Info
Front and Rear; With Z51 package.

It turned out great.... got the zinc coated rotors because they retain their new appearance. I highly recommend this system.

 

Same for me except I went with the Z23 version. I love the pads. They are much quieter and keep my wheels much cleaner than the OEM pads.

 

Thanks for your recommendation. I'll check them out.

 

looks like the rotors are correct direction for both sides of the car,


But lost on why the rotors are both drilled and slotted as well/

Hence street and autocross temps, drilled rotors will be the best to prevent pad off gassing, but for high speed road course use, where the working temps will be higher, you don't use drilled rotors, since the will spider crack at the drilled locations (why you use slotted rotors isntead),



So if Power stop does not Know this, Or anyone else that is selling drilled/slotted rotor combo's, would not be buying from that in the first place.

Hence pick your lane for what temps that the brakes are going to be run at,
offer rotor type for that (just drilled, or just slotted)
and make sure that pads that are coming in the kit, have the needed heat range to work at those temps.

[img]http://drive4corners.com/wp-content/usergallery/hashtag/hawk-brake-pad-chart.jpg[/img)
Hence bring this up,since can not find a single spec for heat range.bite of Power stop pads, and your really want to know the specs, before you either melt or catch a set of pads on fire pushing them aggressively in the first place.

 

Very interesting. Thank you very much for your input. My driving is all street driving so I'll probably stay with drilled only rotors, like the originals from the factory.
I'm looking at Baer Claw rotors and pads. I've been told they are an upgrade from original equipment and are drilled only. Any comment on Baer products?

 

If you have the J55 brake system, then oem HD semi metalic pads can take some major autocross heat, before they has problems.
Also, the J55 hd oem pads are very aggressive (only get about 30K out of the pads), so great initial bite, get pedal feed back, and again great higher working temps that are fine for not only autocross, but during mountain passes where your going to use the brakes a lot more as well.

Simply put, if you have a Z51 option car, that car was factory built for autocross use from the start, including the braking system and pads as well.

With most after market brake pads, you get to pick may 2 of the above, but not all three.

For street, maybe the carbo tech 1521's that will give you at least good intial bite and pedal feed back, but they do not have the higher working heat range of the J55 HD semi metalic oem pads isntead.

https://www.corvetteforum.com/forums...-j55-pads.html


Note, original oem base JL9 pads where semi metallic (but not aggressive material), change to ceramic in later years, but did not offer the higher working temp range, did not give the better initial bite, and lets just say pedal feed back sucked over the HD pads. Hence something like a JL9 replacement pad, the duralast cermamic pads are about the same, but not hard to either melt or set those pads on fire with just heaver use of the brakes in say the mountains to begin with.

Here is a set of Duralast ceramic pads that are melting to the rotor on a GS, from just normal street use of the system getting over 600*.


Myself, don't mind the dusting, don't mind that your only going to get half the life out of the HD pads,and since the calipers for the JL9 and J55 use the same size pads, best upgrade to braking on even a base JL9 braking system car, is to just install the oem HD pads on it to get the higher working temps,the better initial bite,and the better pedal feed back as well (not matter if the brakes are bone cold, or braking system temps are up to 1000* from hard use as well).

Also, keep in mind, that you don't want to put race pads on a street car, since their initial bite does not happen until the pads come up to temp range to begin with ( higher than the normal temp range of the braking system will be for normal street use), and the ones designed to work at higher race temps over 1100*, screamers until you do get them up to there working temps of where the rotors are glowing most of the time instead.

 

Thanks again for the info.

 

Why is this a problem? How does it affect normal braking?

Tom

 

Because the light spider cracking, become this in a mater of time,