BMW P66
The BMW P66 Series is a prototype four-stroke 4.0-litre naturally aspirated V8 racing engine, developed and produced by BMW Motorsport in partnership with AC Schnitzer (reassembly, arrangement, preparation, maintenance, trackside support and tune-up) for Deutsche Tourenwagen Masters. BMW P66 Series was unveiled on 18 July 2011 alongside BMW M3 DTM (E92) machine at BMW Welt in Munich, Germany. The BMW P66 Series engine lifespan was only lasted seven years and later permanently retired in 2019 and later restored in 2022 in order to supply engines for BMW M Hybrid V8 LMDh machine.
| BMW P66 (2012-2016) BMW P66/1 (2017-2018) BMW P66/3 (2022-present) | |
|---|---|
| Overview | |
| Manufacturer | BMW Motorsport |
| Production | 2012-2018 and 2022-present |
| Layout | |
| Configuration | V8 naturally aspirated (2012-2018) later twin-turbocharged (2022-present), 90° cylinder angle |
| Displacement | 4.0 L (244 cu in) |
| Cylinder bore | 93 mm (3.66 in) |
| Piston stroke | 73.6 mm (2.90 in) |
| Cylinder block material | Aluminum alloy |
| Cylinder head material | Aluminum alloy |
| Valvetrain | 32-valve (four-valves per cylinder), DOHC |
| Combustion | |
| Turbocharger | Twin |
| Fuel system | Electronic indirect multi-point fuel injection (2012-2018) later 350 bar (5,076 psi) gasoline direct injection (2022-present) |
| Management | Bosch Motronic MS 5.1 |
| Fuel type | Aral Ultimate 102 RON unleaded racing gasoline |
| Oil system | Dry sump. Castrol EDGE Supercar 10W-60 fully synthetic lubricant (2012-2014) later Shell Helix Ultra 0W-40 fully synthetic lubricant (2015-2018) |
| Cooling system | Single water pump |
| Output | |
| Power output | 480 hp (358 kW) (2012-2016) later over 500 hp (373 kW) (2017-2018) @ 7,500 rpm |
| Torque output | Approx. 500 N⋅m (369 ft⋅lbf) |
| Dimensions | |
| Dry weight | 326 lb (148 kg) excluding headers, clutch, ECU, spark box or filters |
| Chronology | |
| Predecessor | BMW M50B25 (I-6) |
| Successor | BMW P48 Turbo (I-4t) |
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