BMW P65 engine

BMW P65 engine
Overview
Manufacturer	BMW M GmbH
Production	2008–2016
Layout
Configuration	Naturally aspirated 90° V8
Displacement	4.0 L; 244.0 cu in (3,999 cc) 4.4 L; 266.1 cu in (4,361 cc)
Cylinder bore	92 mm (3.62 in)
Piston stroke	75.2 mm (2.96 in) 82 mm (3.2 in)
Cylinder block material	Aluminium
Cylinder head material	Aluminium
Valvetrain	DOHC 4 valves x cyl.
Compression ratio	12.0:1
Combustion
Fuel system	Multi-port fuel injection
Management	BMW Motorsport
Fuel type	Gasoline
Oil system	Dry sump
Cooling system	Water-cooled
Output
Power output	485–500 bhp (362–373 kW; 492–507 PS)
Torque output	500 N⋅m (369 lb⋅ft)

The P65 is a purpose-built naturally aspirated DOHC V8 engine, designed, developed and produced by BMW, for sports car racing, between 2009 and 2016. It is based on the BMW S65 engine, used in the BMW M3 (E92) road car.

The P65B40 is an evolution of the BMW P60B40. It uses a 180 degree or “flat plane” crankshaft.

Applications:

• 2008 BMW M3 ALMS
• 2009 BMW M3 GT2 racing car

The P65B44 engine is an evolution of the engine found in the BMW M3 GTS. It uses a 90 degree or “cross-plane” crankshaft.

Applications:

• 2010-2015 BMW Z4 GT3 racing car
• 2013-2016 BMW Z4 GTE racing car