Merging the American Le Mans Series and the Rolex Sports Car Series together, the TUDOR United SportsCar Championship will be the platform where Mazda’s new diesel-powered prototype will display its prowess. After teasing the community with an initial photo last year, they had finally release a full specification of their new endurance machine.
Unveiled at the “Road Before the 24” test at Daytona International Speedway earlier this month, two of such machine will be fielded by Mazda with four drivers behind the wheels. After delivering nine race wins and the 2013 Grand-Am GX Manufacturers Championship for Mazda, Sylvain Tremblay and Tom Long will share the #70 car while the combination of Joel Miller and Tristan Nunez will be in the #07 car.
The prototype is powered by a 2.2-liter diesel engine and with the help of a turbocharger from Garrett Motorsports, it has 450-horsepower and 580 lb-ft of torque. All the power is sent to the rear tires via Xtrac’s six-speed sequential unit with paddle shifters. With a carbon fiber monocoque chassis, the prototype only weighs 900 kgs (without driver and fuel), and it could hit a top speed of approximately 300km/h.
Mazda said that the SKYACTIV-D Clean Diesel race engine is a true production-based engine as it is 51-percent stock by parts count, and 63-percent stock by weight.
2014 Mazda Prototype Specifications
Engine Displacement: 2,191 cc (133.7 cu. in.)
Bore x Stroke: 86.0 mm x 94.3 mm (3.39 in x 3.71 in)
Engine Weight: 143 kg (315 pounds)
Horsepower: 336 kilowatt (450 horsepower)
Torque: 580 pound-feet
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 kilograms (1984 pounds) – 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)
