During the development of the STILLEN GT R Targa rally car Team STILLEN worked very closely with the engineers at AP Racing to develop the first aftermarket Carbon Ceramic Brake Kit in the world. One of the key components of that kit was brake cooling. Carbon Ceramic Brakes have an ideal operating temperature range where they perform at their best. Carbon Ceramic Brakes work well when cold however their true performance shines through during repeated hard, high temperature braking. However, there is a temperature threshold which should not be exceeded. During the development of the kit the engineers at AP Racing asked what we would be doing for brake cooling. We were open to all input from AP and their instructions were to use external fans directing air to the rotors and calipers. They said regardless how hot the air is coming off the engine, it's a lot cooler than the heat coming off the rotors.
To test the performance of the STILLEN Active Brake Cooling Kit, we went to El Toro Air Force Base with temperature sensors on each rotor and caliper.
We performed the tests with the active cooling on one side of the car, and not the other. We performed a series of 140-0 runs as well as laps around our test track. We also put temperature sensor stickers on each caliper that act just like temperature paint for the rotor. As the temperature of the caliper increases it burns off parts of the sticker so we know how hot the caliper is running. After all of the data was collected and analyzed we determined that with this brake cooling kit we successfully reduced rotor
temperatures by over 200 degrees.
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