BMW M73
Encyclopedia
The BMW
M73 is a V12
piston engine built in Munich, Germany. It has an Alusil aluminum engine block and aluminum SOHC cylinder heads. While most other engines in the BMW had switched to four valves per cylinder, the M73 used 2-valve SOHC heads and featured fracture-split forged steel connecting rods.
The M73 won the "Above 4 L" category of the International Engine of the Year
awards for 1999. Some versions of the engine have two separate Bosch
Motronic electronic fuel injection
systems left and right, while others have an integrated system.
The N73B60
is a 6.0 L (5972 cc) version, now switching to four valves per cylinder and the Valvetronic variable valve timing
system. Its bore is 89 mm and stroke is 80 mm. It is used in the 760i and 760Li. Output is 445 PS (438 hp SAE/327 kW) at 6000 rpm with 600 N·m (443 ft·lbf) of torque at 3950 rpm.
Applications:
BMW
Bayerische Motoren Werke AG is a German automobile, motorcycle and engine manufacturing company founded in 1916. It also owns and produces the Mini marque, and is the parent company of Rolls-Royce Motor Cars. BMW produces motorcycles under BMW Motorrad and Husqvarna brands...
M73 is a V12
V12 engine
A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually but not always at a 60° angle to each other, with all 12 pistons driving a common crankshaft....
piston engine built in Munich, Germany. It has an Alusil aluminum engine block and aluminum SOHC cylinder heads. While most other engines in the BMW had switched to four valves per cylinder, the M73 used 2-valve SOHC heads and featured fracture-split forged steel connecting rods.
Engine | Displacement | Power | Torque | Redline | Year |
---|---|---|---|---|---|
M73B54 | 5.4 L (5379 cc/328 in³) | 240 kW (326 hp) @ 5000 | 490 N·m (361 ft·lbf) @ 3900 | 6000 | 1994 |
M73TUB54 | 240 kW (326 hp) @ 5000 | 490 N·m (361 ft·lbf) @ 3900 | 6000 | 1998 |
The M73 won the "Above 4 L" category of the International Engine of the Year
International Engine of the Year
The International Engine of the Year is an annual competition for automotive industry internal combustion engines, judged by a panel of automobile journalists from around the world. It is organised by the United Kingdom's largest technical motoring, aerospace and traffic management publication...
awards for 1999. Some versions of the engine have two separate Bosch
Robert Bosch GmbH
Robert Bosch GmbH is a multinational engineering and electronics company headquartered in Gerlingen, near Stuttgart, Germany. It is the world's largest supplier of automotive components...
Motronic electronic fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
systems left and right, while others have an integrated system.
The N73B60
BMW N73
The N73 was a V12 engine from BMW, built in Munich, Germany.The N73 was among the first BMW engines to receive the revolutionary Valvetronic technology, which surprisingly gives it more economical fuel consumption than older non-Valvetronic V8 BMW engines...
is a 6.0 L (5972 cc) version, now switching to four valves per cylinder and the Valvetronic variable valve timing
Variable valve timing
In internal combustion engines, variable valve timing , also known as Variable valve actuation , is a generalized term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine...
system. Its bore is 89 mm and stroke is 80 mm. It is used in the 760i and 760Li. Output is 445 PS (438 hp SAE/327 kW) at 6000 rpm with 600 N·m (443 ft·lbf) of torque at 3950 rpm.
Applications:
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