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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 championship-winning 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.
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| Engine Displacement |
2,191 cc (133.7 in3) |
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| Bore x Stroke |
86.0 mm x 94.3 mm (3.39 in x 3.71 in) |
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| Engine Weight |
143 kg (315 lbs) |
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| Horsepower |
336 kW (450 bhp) |
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| Torque |
786 Nm (580 lb-ft) |
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| Max. Engine Speed |
5,200 rpm |
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| Engine Block |
Production Mazda SKYACTIV (Aluminum) |
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| Camshaft |
Dual Overhead |
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| Valves |
Four Valves Per Cylinder |
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| Cylinder Head |
Production Mazda SKYACTIV (Aluminum) |
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| Valve Train Components |
Production Mazda SKYACTIV |
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| Pistons |
Mahle (Steel) |
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| Connecting Rods |
Carillo Forged Alloy (Steel) |
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| Crankshaft |
Pankl Alloy (Steel) |
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| ECU |
Bosch Motorsport MS 15.2 |
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| Intake Manifold |
SpeedSource Race Engineering |
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| Exhaust Manifold |
SpeedSource Race Engineering |
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| Turbo and Wastegate |
Garrett Motorsports, air-to-air Intercooler, Tial wastegate |
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| Fuel Injectors and Pump |
Bosch Motorsport |
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| Fuel Rail |
Bosch Motorsport |
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| Oiling System |
SpeedSource Race Engineering |
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| Cooling System |
SpeedSource Race Engineering |
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| Transmission |
Xtrac 6-speed sequential with paddle shifters |
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| Chassis |
Carbon-fiber monocoque coupe |
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| Weight |
900 kgs (1984 lbs) - Without driver or fuel |
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| Length |
4,634 mm (182.4 in) |
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| Width |
1,990 mm (78.3 in) |
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| Wheelbase |
2,890 mm (113.8 in) |
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| Top speed |
Approximately 300 kph (186 mph) -- in Daytona aero trim |
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| Brakes |
AP carbon drilled discs |
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| Suspension |
Independent double A-arms |
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| Tires |
Continental Extreme Contact |
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| Front: 320/650/R18 |
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| Wheels |
Motegi EVO 14 Technomesh, Forged Aluminum |
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| Fuel |
Dynamic Fuels Renewable Diesel |
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| Fuel Capacity |
70 liters (18.5 gallons) |
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