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BMW N73 Engine For Sale

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    This engine was made to replace the M73 unit. With the latter it shares the general architecture and some other features including:

    splitting into 12 V- cylinders ;
    60 ° angle between the banks ;
    presence of the Double Vanos variable valve timing system ;
    double Bosch DME electronic control unit

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    Compared to the M73 unit, however, it introduces some new features, first of all:

    Valvetronic continuous variable valve timing system, which optimizes the work done by the double Vanos system ;
    direct injection power ;
    cylinder head with 4 valves per cylinder;
    distribution with double overhead camshaft per bank.

    View of the 6.75 liter BMW N73 mounted on a Rolls-Royce Phantom
    These innovations have allowed the V12 to significantly reduce fuel consumption, to the point of being even cheaper than some BMW V8s born a few years earlier, but without direct injection and variable valve timing.

    Thanks to its 89×80 mm bore and stroke measurements, this engine has a displacement of 5972 cm³ and delivers a maximum power of 445 HP at 6000 rpm, with a maximum torque of 600 Nm at 3950 rpm.

    This engine was only fitted to the BMW 760i and 760Li E65 / 66 produced from 2003 to 2008.

    Another unit with a displacement of 6749 cc was derived from the N73B60 unit, capable of delivering 460 hp of maximum power at 5350 rpm, with a peak torque of 720 N · m at 3500 rpm. However, this engine was not mounted on any BMW, but on the Rolls-Royce Phantom produced from 2003 onwards and on the Rolls-Royce Phantom Drophead Coupé (from 2007 ) and Phantom Coupé (from 2008 ). The house of the spirit of ecstasy passed under the control of BMW as early as 1998.

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