Mazda has long believed in promoting from within, including filling those rare ‘factory team’ driver slots. Mazda Motorsports will field a pair of factory-backed SKYACTIV Technology-powered prototypes in the 2014 TUDOR United SportsCar Championship. Behind the wheel will be the four drivers who delivered nine race wins and the 2013 Grand-Am GX Manufacturers Championship for Mazda. Sylvain Tremblay and Tom Long will share the #70 car while Joel Miller and Tristan Nunez will co-pilot the #07. The team took their first public laps at the annual pre-season “Roar Before the 24” test at Daytona International Speedway recently. This test is for the season opening Rolex 24 Hour race on January 25-26.
As part of its challenger frame of mind, Mazda is the only car company racing in the TUDOR Championship with a diesel engine. 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 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.
2014 Mazda Prototype Specifications
Engine Displacement: 2,191 cc (133.7 in3)
Bore x Stroke: 86.0 mm x 94.3 mm (3.39 in x 3.71 in)
Engine Weight: 143 kg (315 lbs)
Horsepower: 336 kW (450 bhp)
Torque: 786 Nm (580 lb-ft)
Max. Engine Speed: 5,200 rpm
Engine Block: Production Mazda SKYACTIV (Aluminum)
Camshaft: Dual Overhead
Valves: Four Valves Per Cylinder
Cylinder Head: Production Mazda SKYACTIV (Aluminum)
Valve Train Components: Production Mazda SKYACTIV
Pistons: Mahle (Steel)
Connecting Rods: Carillo Forged Alloy (Steel)
Crankshaft: Pankl Alloy (Steel)
ECU: Bosch Motorsport MS 15.2
Intake Manifold: SpeedSource Race Engineering
Exhaust Manifold: SpeedSource Race Engineering
Turbo and Wastegate: Garrett Motorsports, air-to-air Intercooler, Tial wastegate
Fuel Injectors and Pump: Bosch Motorsport
Fuel Rail: Bosch Motorsport
Oiling System: SpeedSource Race Engineering
Cooling System: SpeedSource Race Engineering
Transmission: Xtrac 6-speed sequential with paddle shifters
Chassis: Carbon-fiber monocoque coupe
Weight: 900 kgs (1984 lbs) – Without driver or fuel
Length: 4,634 mm (182.4 in)
Width: 1,990 mm (78.3 in)
Wheelbase: 2,890 mm (113.8 in)
Top speed: Approximately 300 kph (186 mph) — in Daytona aero trim
Brakes: AP carbon drilled discs
Suspension: Independent double A-arms
Tires: Continental Extreme Contact
Front: 320/650/R18
Rear: 325/710/R18
Wheels: Motegi EVO 14 Technomesh, Forged Aluminum
Fuel: Dynamic Fuels Renewable Diesel
Fuel Capacity: 73 liters (19.3 gallons)
