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Respect The Tech: When Art Does Not Reflect Real Life

We are an industry very focused on our own image. But, sometimes we need to step back to get a global perspective on the issue. Shutterstock.com is a website where photographers can sell stock photographs online for magazines, advertisements and billboards....

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Consistently Selling Maintenance Boosts Customer Satisfaction, ­Retention

While seasons change, your maintenance strategy should be consistent year-round. For this edition of ­Maintenance Chronicle, we take a snapshot of the maintenance sales of an 11-bay shop in ­upstate New York during a two-week ­period. What did...

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Documenting Inspections: Are You Leaving Maintenance Dollars On The Table?

How do you translate scribbles on a ­repair order into sales? There is no magic trick involved — the key is to document the vehicle ­inspection process. The more you know about your customers’ vehicles, and the more you are able to document...

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Audi: Transmission Does Not Shift Due To Cabin Air Filter

Model: 2001 Audi A6 Avant Quattro, 2.8L Complaint The customer states the transmission does not shift. Cause Confirmed the customer’s complaint and found the transmission did not shift. Inspected the automatic transmission fluid level and condition...

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Kia Driveability Diagnostics: Chasing Intermittent Gremlins

This month, we find ourselves looking at a 2004 Kia ­Sorrento that the owner says is losing power and stalling with no established pattern. It will run well for days or even weeks at a time without a problem, only to then act up without warning,...

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Mercedes-Benz: Noise in Front of Vehicle/Dash Area

Affected Models: Model 203.052/054/092/056/087 Model 209.356/365/372/375/376/377/456/ 465/472/475/476/477 If you receive customer reports of noise from the center of the dash area in the above-listed vehicles, this may be caused by a portion of...

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Equipment and Tool Institute Launches an Important Market Research Study on New Car Buying Preferences of Consumers

In an effort to assist its members in having the latest market information and bringing new and improved equipment and tools to the marketplace, The Equipment and Tool Institute (ETI) has launched a series of Market Research Projects. The current...

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Redline Detection Names 2015 Redline Rock Star Performance Award Winner

Redline Detection has announced the winner of its 2015 Redline Rock Star Performance Award. Rob McNees of Truck Centers, Inc. (TCI) was selected by the Redline Technical Advisory Board as the winner and received more than $4,000 in cash and prizes from...

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Rivet Bonding Comes Full Blast

By Mitch Becker for BodyShop Business   By now, most of you have heard the news that Ford has mainstreamed rivet bonding with the introduction of the 2015 F-150. This has forced many shops to look into some new equipment, such as self piercing...

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Diagnosing Catalytic Converter Failure Symptoms

Although construction can vary according to engine application, the common three-way catalytic converter contains a reduction and oxidation stage. To create maximum surface area, each stage is generally a ­ceramic or stainless steel honeycomb substrate...

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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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7 Reasons Direct-Injection High-Pressure Fuel Pumps Fail

Don’t be scared by direct fuel injection diagnostics. In theory, these systems operate on the same principles as port fuel injection, but direct injection can inject more precise amounts of fuel into the combustion chamber so the engine can run leaner...

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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 is an ASE Certified Technician and former service writer, and he brings this practical knowledge to the Brake & Front End team as editor.

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Audi: Transmission Does Not Shift Due To Cabin Air Filter

Model: 2001 Audi A6 Avant Quattro, 2.8L Complaint The customer states the transmission does not shift. Cause Confirmed the customer’s complaint and found the transmission did not shift. Inspected...More

Kia Driveability Diagnostics: Chasing Intermittent Gremlins

This month, we find ourselves looking at a 2004 Kia ­Sorrento that the owner says is losing power and stalling with no established pattern. It will run well for days or even weeks at a time without...More

Equipment and Tool Institute Launches an Important Market Research Study on New Car Buying Preferences of Consumers

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Redline Detection Names 2015 Redline Rock Star Performance Award Winner

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Diagnosing Catalytic Converter Failure Symptoms

Although construction can vary according to engine application, the common three-way catalytic converter contains a reduction and oxidation stage. To create maximum surface area, each stage is generally...More

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...More