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Cool Power Thermal Management for Mazda RX7

Are You Wasting Horsepower?

Thermal management technology has evolved into an art. Enthusiasts everywhere are realizing that potential horsepower and reliability gains are significant and worth far more than their cost. All auto manufacturers agree that proper shielding of radiant heat is extremely important, and they go to great lengths to reduce heat radiation from exhaust and turbo systems onto the surrounding components, using multi-layer heat shields, reflective barriers and even ducting of air.

While any Mazda RX-7 FD can benefit from this technology, single turbo setups seem to benefit the most. Instead of just wasting horsepower, with the rotary it's easy to waste engines. Since most aftermarket turbo kits don't include heat shielding, and most installers don't spend the extra time to add it, this allows exposed radiant heat to blast the lower intake. On 3rd Gen setups this usually affects the front runner, superheating the charge just as it enters the port. Not only does this raise the charge temperature into the danger zone, but it causes sensors to report that the engine is running too rich. Computerized "tuners" then wrongly lean the overall mixture to compensate, which then results in the cooler rear rotors becoming dangerously lean. And since the air temperature sensor is located upstream where the temperature is cooler, it can be difficult to determine that radiant heat is causing this mixture imbalance, costing both horsepower and reliability. 90% of Mazda RX-7 FD single turbo engines we open have rear rotor failures, which further confirms this condition.

Pettit Racing is producing new Cool Power Thermal Management Systems designed to work with most RX7 single turbo setups. These kits are easy to install and the benefits are priceless. We also have a kit for the factory twin turbo setup as well.

The Pettit Racing Cool Power Kit uses the latest proprietary technology for thermal protection. Our Thermal Barrier Panel ("TBP") is made from non-woven thermal insulation and is designed specifically for use in areas where minimum space is available, and our Thermal Barrier Wrap ("TBW") is made of woven thermal insulation. Both materials resist temperatures up to 2000° Farenheit (over 1000° Celsius). These materials are safe and do not expose the driver to any harmful substances; they contain no asbestos, are non-flammable, will not corrode, and resist mildew and deterioration.

The Cool Power Kit for single turbo 3rd Gen RX7's is priced at $349 and includes:

  • A custom Thermal Barrier Cover which fits around the turbo hot section. It is reinforced with Inconel (a nickel-chromium-based superalloy) wire and assembled with stainless steel staples, and has proven to be a very durable and long-lasting part.
  • A Cool Power Turbo Heat Shield which fits between the lower intake and the turbo system and is layered with thermal barrier panel. This simple design retains an air space between the lower intake and shield, further reducing heat transfer.
  • A 15-foot roll of TBW (Thermal Barrier Wrap) for the down pipe, with enough spare material to wrap the front section of the mid pipe.
  • 2 TBP's (Thermal Barrier Panels) which are pre-cut for the floorboard area just above the hottest section of the exhaust system, and designed to reduce heat transfer into the passenger foot well, which produces a significant improvement in occupant comfort level.
  • 2 feet of hi-temp metal tape, which is used to seal the TBP edges.
  • 3 stainless steel hose clamps to secure the Thermal Barrier Wrap.

The Cool Power Kit for twin turbo 3rd Gen RX7's is priced at $149 and includes:

  • A 15-foot roll of Thermal Barrier Wrap for the down pipe, with enough spare material to wrap the front section of the mid pipe.
  • 2 TBP's (Thermal Barrier Panels) which are pre-cut for the floorboard area just above the hottest section of the exhaust system, and designed to reduce heat transfer into the passenger foot well, which produces a significant improvement in occupant comfort level.
  • 2 feet of hi-temp metal tape, which is used to seal the TBP edges.
  • 3 Stainless hose clamps to secure the Thermal Barrier Wrap.