MAZDA SKYACTIV 2014 PROTOTYPE: Racing fans attending the 2014 Chicago Auto Show are pleased to be able to get up close to one of the Mazda Skyactiv racing machines. As part of its challenger frame of mind, Mazda is the only car company racing in this year’s TUDOR United SportsCar Championship with a diesel engine. Mazda Motorsports will be fielding a pair of factory-backed SKYACTIV TECHNOLOGY-powered prototypes. The Skyactiv-D Clean Diesel race engine is a true production-based engine and a carry-over from the development work done with the Mazda6 Grand-Am GX-class racing cars. The engine is 51 percent stock by parts count and 63 percent stock by weight. Mazda chose this path as it is the most honest way to demonstrate the performance, quality, durability and reliability of Mazda powerplants. The engine runs on Dynamic Fuels renewable diesel fuel, comes mated to an Xtrac six-speed sequential with paddle shifters, and has a carbon-fiber monocoque chassis. Rolling on 18-inch wheels and Continental Extreme Contact tires, the prototype tops out at 186 mph in Daytona aero trim. Bringing this Mazda to a quick and safe stop are AP carbon drilled disc brakes.
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