BMW M73
Encyclopedia
The BMW
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.
Models
EngineDisplacementPowerTorqueRedlineYear
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:
  • 1993-2001 E38
    BMW E38
    The BMW E38 model was the basis for the 1995 through 2001 BMW 7 Series automobiles. Developed from early 1988 to 1994, it was unveiled in the summer of 1994, replacing the BMW E32 that September and itself was replaced by the BMW E65/E66 for the 2002 model year.The E38 models were offered with...

     7-Series
  • 1994-1999 E31 8-Series
  • 1997-2001 E38
    BMW E38
    The BMW E38 model was the basis for the 1995 through 2001 BMW 7 Series automobiles. Developed from early 1988 to 1994, it was unveiled in the summer of 1994, replacing the BMW E32 that September and itself was replaced by the BMW E65/E66 for the 2002 model year.The E38 models were offered with...

     7-Series (M73TU)
  • 1999-2002 Rolls-Royce Silver Seraph
    Rolls-Royce Silver Seraph
    The Rolls-Royce Silver Seraph, produced from 1998 to 2002, was first unveiled on March 3, 1998 at the Geneva Motor Show. The Silver Seraph replaced the Silver Spur, which ended production in 1997....

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