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Do Cabin Air Filters Help Winter Breathing Problems?

When some people think about cabin air filters, they conjure up images of summertime, air conditioning and musty smells. The reality is that cabin air filters work the majority of their magic when temperatures drop and cause winter breathing problems. Every...

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Nissan TPMS Service Essentials - Start With Having The Right Tools

Nissan TPMS systems began appearing in 2003 as a standard feature or option on most models. And, for the past decade, the behavior of all Nissan TPMS systems has been very consistent on all models. There is only one trick to service Nissan TPMS systems,...

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Mazda Timing Belt And Chain Replacement

In this article, we’re going to be looking at the ­timing components on the Mazda line of vehicles. We’ll be focusing on timing belts since they are considered a service item and will present the greater amount of opportunity for replacement. Then,...

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The Ins And Outs Of Sanders

Sanders are required tools in today’s collision repair shop. Body techs and painters rely upon them every day to achieve that perfect finish on your customers’ vehicles. Whether you’re prepping a panel for paint or removing imperfections before...

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Are You Regularly Maintaining Your Equipment?

Technicians who are idling because the welder won’t feed wire, the hydraulic ram won’t pull chains, the booth heater won’t heat or the air compressor won’t compress enough air is a costly mistake, as labor time is the most expensive thing in any...

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Celebrate 'Back To The Future' Day By Watching The Time Machine Get A 2015 Detail

    For many today is just another Wednesday, but for a lot of people it is more than just your average Wednesday, it is "Back to the Future" Day. It is a day that everyone who watched the cult classic trilogy Back to the Future recognizes...

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Send Us Your Winter Beater Story. It Could Be In Our Magazine!

A winter beater is not a junker, bomber or jalopy. It is the calling card of a real master technician. A winter beater is as much about frugality as it is a demonstration of your mechanical skills, and starting it on a -10 degree day has the same satisfaction...

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Coolant Transfusion: Proper Selection Prevents System Degradation

Coolant is easily analogized to blood, both being liquids that are essential to the functioning of an entire complex system. The analogy extends even ­further though because, like blood, coolant has different types, and it’s not a stretch these...

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Timing Chain Replacement Diagnosis And Repair

Timing Chain Replacement is More Than Just the Chain Timing chains, with their thinner width, reduce overall engine length and are more durable than timing belts, requiring no scheduled maintenance. Timing chains do make more noise, have higher weight...

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Home Brakes High Performance Brakes: Carbon Ceramic Rotors

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While it may seem like these systems are untouchable like some super models, this expensive option on some high performance vehicles could be the brake of the future if they manage to bring the costs down.

Ceramic composite rotors are extremely durable. In fact, manufacturers claim that they’ll never need replacement — at least with "normal" driving. They’re also resistant to the kind of distortions and wear that leads to pedal pulsation — merely an annoyance in the “real world,” but a noticeable performance issue on the track.
Manufacturing
The brake discs are formed from a specially treated carbon-fiber compound that is silicated in a high-vacuum process at higher temperatures then any stop could produce. Not only are the resulting discs much harder than standard discs, they are more resistant to heat. The process used to produce the discs for CCB is complex and time-consuming  and costly when compared to cast iron.

The carbon fibers are blended with a resin of carbon and silicon. The mixture is pressed into a mold to create the basic disc shape, including its internal cooling vents. Using heat up to 3,000º F, the resin is converted to silicon carbide, a material nearly as hard as diamond. This is the “ceramic” in “carbon ceramic.” If you tried to machine these rotors, you would need diamond tipped bits in your brake lathe.

The low thermal expansion of the brake discs prevents deformation under heavy braking. Furthermore, the ceramic brake discs are totally resistant to corrosion and offer more favorable noise-damping properties.
 
Advantages
Because of their exceptional performance in extreme conditions, ceramic composite brakes were developed for use in high-level motorsports competition. Porsche was the first automaker to apply them for road use, with Porsche Ceramic Composite Brakes included as standard equipment in the Porsche GT2 and Carrera GT and as an option in most other models.

Ceramic composite brake discs provide a 50-percent weight savings compared to conventional metal discs. This reduces unsprung weight, enhances shock absorber response and vehicle handling, and also improves fuel efficiency and contributes to reduced emissions.

Ceramic composite brake discs have an extremely hard surface that provides consistent frictional values throughout the deceleration process, even in braking from extremely high speeds and at high operating temperatures, such as those generated from repeated braking. But the system also provides benefits in low-speed situations.  In the event of an emergency stop, the technology does not require heavy pedal forces or outside technological boosting assistance to achieve maximum and immediate stopping force.

With cross-drilled discs and pads that are resistant to water absorption, the ceramic composite brakes provide superior response in wet conditions as well as dry. Because of their hard surface and immunity to salt corrosion, Porsche Ceramic Composite Brakes have an extremely long operating life.
Service Life
Porsche Ceramic Composite Brakes have been on the market for almost 10 years. There have been no recalls or lawsuits. There have been some complaints on low speed noise, but Porsche’s advice is to warm them up.

The only real complaints with the ceramic disc have come from weekend racers who have experienced cracked discs due to extreme abuse. Porsche’s advice to these drives is to check for cracks before they head out to the track. With the replacement costs of four disc and pads costing more than $20,000, many are switching to cast iron rotors and semi-metallic pads.  
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Andrew Markel

Andrew Markel

Andrew Markel is the editor of Brake & Front End magazine. He has been with Babcox Media for 15 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers. He can be reached at [email protected]
Andrew Markel

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