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Old 11-23-2009, 03:48 PM   #12 (permalink)
supershifter2
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Join Date: Nov 2009
Location: Lost Angeles , Ca.
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Quote:
Originally Posted by beechkid View Post
Assuming the system is functioning properly, there are issues with the friction materials, specifically, the linings are apec's at a braking co-efficient rating less than the oem spec- not an unusual occuranc today- brake shoes should have a BCE of .37 and disc should be .49 or better.

My thoughts...........

Ceramics: They are good but do not develop any more friction than good quality OEM linings

Performance Friction & Hawk: Good braking, increased friction but very dirty compared to OEM with the exception of VelveTouch- a line that Hawk just bought from Wellman Industries. VelveTouch lining has been used for many decades and was the original lining used in all Shelby Mustangs in the 60’s (I personally have used the Velvetouch lining since 1960’s until brake lining production ceased in 1986). Wellman has been the builder of braking linings for all of the Formula 1 race teams for more than 30 years.

CarboTech Engineering lining, which I have used for about 15+ years and been very happy on multiple full size (V8) cars and trucks. This particular lining has a high friction co-efficient, excellent pedal feel, wear and produces less dust than OEM linings.

Rotors, I have previously run Brembo OEM replacement rotors that are cryogenically treated at Diversified Cryogenics (or ART on the east coast does the cryo tx as well), making them almost as hard as stainless steel. Unfortunately, Brembo, Powerslot, Raybestos, Bendix, Hawk etc. are all purchasing their rotors from the same foundary in China (with the exception of the $300 each composite high end units for Ferrari, Porsche, etc). They purchase the highest grade rotors made, laser mic them for quality, scrap the ones that are out of spec and cryogenically treat the good ones which are now as strong as stainless. They will also slot and cross drill the rotors for you. Their service, price and quality is excellent as well.

For street use, slotted/drilled rotors are just “cheese-graters” for the brake pads IMHO, because unless you are involved in true racing conditions, the brake linings do not produce the gases which slotted/drilled rotors are designed to relive. In some cases, brake testing indicated reduce brake efficiency in street-based operations using slotted/drilled rotors when equal comparisons were made. The staff can speak to you as well regarding those options, but I am very satisfied with the performance & wear of these products.

I also highly recommend using 5.1 DOT (non-silicone) brake fluid. It possesses all the great performance qualities of 5.0 DOT (silicone) but without the negatives. The only issue is for those with custom paint jobs- 5.0 DOT (silicone) fluid will not harm the paint like “conventional” brake fluid will/can.
i use PORTERFIELD R-4S pads for the street. exelent street pad
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