The BMW N73 is a V12 DOHC piston engine which replaced the M73 and was produced from 2003–2008.

Compared with its M73 predecessor, the N73 features DOHC, also the N73 was the first production V12 engine to feature direct injection. with a cylinder bank angle of 60 °.  The N73 has direct injection , four-valve technology and fully variable valve control , the BMW " Valvetronic is called." This reduces the fuel consumption of the engine by up to 10% (BMW data).

The crankcase , like its predecessor, consists of an aluminum - silicon alloy ("Alusil"), the crankshaft with 12 counterweights made of forged steel. Aluminum castings were used for the cylinder heads.

The B60 variant runs on two MED 9.2.1 engine control units

The N73 was among the first BMW engines to use variable valve lift (called Valvetronic by BMW).

The camshafts featured infinitely variable vane-type VANOS (variable valve timing) for variable intake and exhaust valve timing; the VANOS units were designed as integral components of the chain drive and secured to their respective camshafts with a central bolt. For the N73 engine, the intake and exhaust camshafts had adjustment ranges of 63 degrees and 60 degrees, respectively, relative to the crankshaft.

The N73 engine also featured BMW’s ‘Valvetronic’ system which varied intake valve opening lift between 0.3 mm and 9.85 mm, according to engine speed and load. Each cylinder head had a Valvetronic assembly – including a motor, control module and position sensor – which consisted of a bridge support with eccentric shaft, intermediate levers with retaining springs, drag lever and the intake camshaft. 

The N73 was superseded by the BMW N74, a 6 litre twin-turbocharged V12 engine.

Models

N73B60

2003-2008 BMW 7-Series engine Specs 760Li 

Application:

• 2003-2008 E65/E66 760i/760Li

N73B67/8

Rolls-Royce Phantom engine specs

Application:

• 2003-present Rolls-Royce Phantom
• since 2003 in the Rolls-Royce Phantom (RR01)
• since 2007 in the Rolls-Royce Phantom Drophead Coupe (RR2)
• since 2008 in the Rolls-Royce Phantom Coupe (RR3)

The BMW N63 is a twin turbo DOHC V8 piston engine which replaced the (naturally aspirated) N62. It was launched in the 2008 BMW X6 xDrive50i, and later the F01 BMW 750i. The location of the intake and exhaust manifolds are reversed compared to a traditional V8. The BMW Motorsport division version of this engine, called S63, debuted in the X5M and X6M and later appeared in the M5 and M6. Alpina also uses a variant of this engine in its B5 Bi-Turbo, B6 Bi-Turbo and B7 Bi-Turbo.

The N63 engine should consume less fuel and develop more power compared to the predecessor, to the cubic capacity was reduced to 4.4 liters, and he was equipped with bi-turbocharging and direct injection ; The first N63 engine introduced in 2008 produces 300 kW.  The engine is based on the " closed-deck design ",  it has an aluminum block and aluminum cylinder heads. Per cylinder bank - both are at an angle of 90 ° to each other - two overhead camshafts are mounted, which are driven by a timing chain. The control times are variable by VANOS . Exhaust gas turbocharger and catalytic converter were placed between the cylinder banks, the air inlet is on the outside of the cylinder banks. The crankshaft is made of forged steel and has a drive wheel for the oil pump. It runs in crankshaft bearings with a diameter of 65 mm. Auxiliaries such as water pump, alternator and power steering pump are driven by a belt

 Design

The exhaust manifolds and turbochargers are located between the cylinder banks (on the "inside" of the V8) and the intake manifolds are located on the outside of the engine; this is opposite to the traditional manifold arrangement for a V8 with intakes in the "V" of the engine and the exhaust manifolds on the outside of the engine V. This new design creates a more compact engine package and decreases the exhaust runner length from the exhaust valves to the turbochargers. The engine uses air-to-water intercoolers, which are more efficient and provide a shorter air path than standard front mounted air-to-air intercoolers.

Similar to the N54B30, the original N63B44 and S63 do not use the second generation Valvetronic technology found in current BMW engines. The principal advantage of Valvetronic is the reduction of intake vacuum, which is not an issue in the pressurized intake found in a turbo-charged engine. Valvetronic was finally added to the updated M63TU variant of the engine.

Technical data 

All versions have 4395 cc capacity with a bore of 89 mm and a stroke of 88.3 mm.

N63 Versions

N63B44O0

BMW 5 series F07 550i GT engine specification

Applications:

• 2008– 2013 E71 X6 xDrive50i
• 2009– 2012 F01/F02 750i/750Li sDrive/xDrive
• 2010– 2012 F07 550i GT sDrive/xDrive
• 2011– 2013 F10/F11 550i sDrive/xDrive
• 2011– 2013 E70 X5 xDrive50i
• 2012– 2012 F12/F13 650i sDrive/xDrive

N63B44O1(N63TU)

The N63TU engine is the successor to the N63 that also remedied the many technical issues of the N63 engine before it that are further explained on the bottom of this page in the "N63 Customer Care Recall Package" section. The further developed N63TU engine is the latest fuel-mixture generation technology Turbo Valvetronic Direct Injection TVDI. There are strong similarities here to the N20 or N55 engines. The new engine boasts better performance data at reduced fuel consumption and CO2 emissions.

BMW X5 engine specification (2014– F15 X5 )

Applications:

• 2013– F01/F02 750i/750Li sDrive/xDrive
• 2013– F07 550i GT sDrive/xDrive
• 2014– F10/F11 550i sDrive/xDrive
• 2014– F15 X5 xDrive50i
• 2013– F12/F13 650i sDrive/xDrive

N63B44O2 (N63TU2)

The N63TU2 engine replaces the predecessor N63TU. The key enhancements of the N63TU2 over the N63TU are the improved exhaust-gas characteristics, the availability of the engine torque over a wider speed range together with optimized consumption, and a more efficient production process in the plant for the new N63TU2 engine.

The unique selling points of the new N63TU2 engine for the market include innovative detailed solutions such as the internal engine thermal management system during warm-up (called SCC, "Split Cooling Combined", the engine oil/coolant heat exchanger integrated into the engine V, the half-shell intake system and the engine charging using the twin-scroll exhaust turbocharger technology.

Applications:

• 2016– G12 750i/750Li sDrive/xDrive
• 2017– G30 M550i xDrive

S63 BMW Motorsport Versions

The S63 is BMW's Motorsport division version of the N63, which debuted in the BMW X6 M. The S63 uses two twin-scroll turbochargers plus a pulse tuned, cross-engine exhaust manifold to keep constant exhaust pulses flowing to the turbos at every 180 degree rotation.

S63B44O0

Applications:

• 2010–2013 E70 X5 M
• 2010–2013 E71 X6 M
• 2011– Wiesman GT MF5

S63B44T0

A technical update to the S63, known as the S63B44T0, debuted on the F10 M5 sedan. This version uses Valvetronic, a 10:1 compression ratio (compared with 9.3:1 for the non-TU version) and 1.5 bar of boost (compared with 1.3). It is the first BMW M to use Valvetronic.

Applications:

• 2011–present F10 M5
• 2012–present F12/13 M6
• 2013–present F06 M6 Gran Coupe

S63B44T2

The S63B44T2 debuted on the new generation 2015 X5 M and X6 M models.

Applications:

• 2015–present F85 X5 M
• 2015–present F86 X6 M

Alpina

Alpina uses a variant of the N63 engine that makes at least 25% more power than the base engine. Compared to the S63, Alpina's first and second variants makes lower horsepower but more torque.

For the 2013 model year, it received Valvetronic like all other N63 engines. Compared to BMW M's version of the 4.4L twin-turbo engine (such as found in the F10 BMW M5), Alpina's engine has 20 hp less but more maximum torque which is also available at a lower RPM.

M1

Applications:

• 2009–2012 Alpina B7 Bi-Turbo: based on the BMW F01 7 Series
• 2010–2011 Alpina B5 Bi-Turbo Sedan/Touring: based on the BMW F10/F11 5 Series

M1/1 (M2/1)

Applications:

• 2012–2014 Alpina B5 Bi-Turbo Sedan/Touring: based on the BMW F10/F11 5 Series

M1/2 (M2/1)

Applications:

• 2011–2015 Alpina B6 Bi-Turbo Coupé/Cabrio: based on the BMW F12/F13 6 Series

M2/1

Applications:

• 2014–2015 Alpina B6 Bi-Turbo Gran Coupé: based on the BMW F06 6 Series

M2

Applications:

• 2012–2015 Alpina B7 Bi-Turbo: based on the BMW F01 7 Series

M2/2

Applications:

• 2015 Alpina B5 Bi-Turbo Edition 50 Sedan/Touring: based on the BMW F10/F11 5 Series
• 2015–2016 Alpina B6 Bi-Turbo Edition 50 Coupé/Cabrio: based on the BMW F12/F13 6 Series
• 2016 Alpina B5 Bi-Turbo: based on the BMW F10/F11 5 Series
• 2016–present Alpina B6 Bi-Turbo: based on the BMW F06/F12/F13 6 Series

N63M30

Applications:

The Alpina name is still unknown but the engine is codenamed N63M30 by BMW.

• 2016–present Alpina B7 Bi-Turbo: based on the BMW G12 7 Series
• 2017–present Alpina B5 Bi-Turbo: based on the BMW G30/G31 5 Series

 

The BMW N62 is a V8 DOHC piston engine which replaced the M62 and was produced from 2002–2010. Compared with its M62 predecessor, it features variable valve timing for both the inlet and exhaust camshafts (called double-VANOS by BMW) and variable valve lift (called valvetronic by BMW). The engine was available in 3.6 and 4.4 capacities however the 3.6 later a 4.0 and 4.8 litre versions replaced their smaller predecessors. The 4.8 Like the M62, it has 4 valves per cylinder and fracture-split forged powdered metal connecting rods.

With 8 cylinders in V-arrangement of the Bavarian vehicle manufacturer BMW and successor to the BMW M62 . The engine block is made of Alusil , a hypereutectic aluminum alloy (AlSi17Cu4Mg), and was manufactured from 2001 to 2010 in Munich . Each cylinder has 4 valves and an indirect sequential fuel injection Sequential Fuel Injection (SFI) . The valve control via the BMW Valvetronic and double camshaft adjustment VANOS .

Furthermore, the N62 is now fuel quantity controlled via the Lambda sensors in full-load operation compared to its predecessor BMW M62 . This reduces fuel consumption in full-load operation and improves exhaust gas values ​​such as the content of carbon monoxide (CO), hydrocarbon (HC), nitrogen oxides (NOx) and, above all, benzene .

In 2002, the N62 won Best New Engine , Above 4-Liter and International Engine of the Year awards in the International Engine of the Year Award .

Successor was the BMW N63 .

The N62 did not have a high-performance derivative, unlike the preceding M62 and succeeding N63. Instead, BMW produced the S85 V10 for the E60 M5 and E63 M6, and the S65 V8 for the E90 M3 being derived from the S85.

Data 

Use 

N62B36 3600cc V8

The N62B36 is a 3,600 cc (220 cu in) version producing 200 kW (270 hp) at 6200 rpm and 360 N·m (270 lb·ft) at 3700 rpm. Bore is 84 mm and stroke is 81.2 mm.

Applications:

• 2001-2005 E65/E66 735i/735Li

N62B40 4000cc V8

The N62B40 is a 4,000 cc (244 cu in) version producing 225 kW (302 hp) at 6300 rpm and 390 N·m (290 lb·ft) at 3500 rpm. Bore is 87 mm and stroke is 84.1 mm.

Applications:

• 2005-2010 E60/E61 540i sedan and touring
• 2005-2008 E65/E66 740i/740Li sedan

N62B44 4,398cc V8

Morgan Aero 8 Series 2 and Series 3 Engine specification.

The N62B44 is a 4,398 cc (268 cu in) version. Bore is 92 mm and stroke is 82.7 mm. Except for in the X5, it produces 245 kW (329 hp) at 6100 rpm and 450 N·m (330 lb·ft) at 3600 rpm.

Applications:

• 2001-2005 E65/E66 745i/745Li
• 2004-2006 E53 X5 4.4i- 235 kW (315 hp) at 6100 rpm and 440 N·m (320 lb·ft) at 3700 rpm
• 2003-2005 E60/E61 545i
• 2003-2007 E63/E64 645Ci
• 2005-2007 Morgan Aero 8 Series 2 and Series 3

N62B48 4799cc V8

The N62B48 has a displacement of 4,799 cc (293 cu in), a bore of 93 mm and a stroke of 88.3 mm. Except for in the X5, it produces 265 kW (355 hp) and 500 N·m (370 lb·ft) for 2004 year - and respectfully produces 270 kW (360 hp) and 490 N·m (360 lb·ft) for 2005 to 2006 model year. Production of E53 X5 4.8is with N62B48 Engine ceased at end of 2006 year with some models produced as late as September & October 2006.

Applications:

• 2004-2006 E53 X5 4.8iS SAV- 270 kW (360 hp) at 6300 rpm and 490 N·m (360 lb·ft) at 3400 rpm
• 2003–present Wiesmann GT MF4 / Roadster MF4
• 2005-2010 E60/E61 550i sedan and touring
• 2005–2010 E63/E64 650i coupé and convertible
• 2005-2008 E65/E66 750i/750Li
• 2007–2010 E70 X5 4.8i SAV- 265 kW (355 hp) at 6300 rpm and 500 N·m (370 lb·ft) at 3400 rpm
• 2008–present Morgan Aero 8 Series 4, AEROMAX, Aero Supersports and Aero Coupe

The BMW N57 is a family of aluminium, turbocharged straight-6 common rail diesel engines. The engines utilize variable geometry turbochargers and Bosch piezo-electric injectors. In 2015 the N57 is starting to be replaced with the B57 engine, beginning with the G11 730d.

The N57 is a 30 ° inclined, supercharged and water-cooled six-cylinder in-line engine with two overhead camshafts that operates on the diesel principle. Bore and stroke are 84 × 90 mm, resulting in a displacement of 2993 cm ³ . The crankcase of the engine is made of aluminum. In order to withstand occurring stresses, a plate is screwed to the bottom of the crankcase for reinforcement. The main bearing shells for the crankshaft are made of sintered metal, running a forged crankshaft. The cylinders are dry liners thermally connected to the cylinder blockused. The cylinder head of the engine is divided into two parts. The lower part comprises the intake and exhaust ducts and the valves, the upper part consists of a support plate in which run the camshafts, it is bolted to the lower part. Furthermore, the cylinder head is provided with an exhaust gas recirculation passage. The camshafts actuate two single and two exhaust valves per cylinder. A timing chain on the flywheel side of the engine, which is tensioned by hydraulic chain tensioners, drives the intake camshaft. The exhaust camshaft is driven from the intake camshaft. The fuel comes with a common-rail system from Boschinjected directly into the cylinders. Depending on the model, the injection pressure is between 1800 and 2000 bar. Depending on the model, one, two or three turbochargers are installed, which are coupled to a charge air cooler . 

N57D30

N57D30Ox has 1800 bar fuel pressure, while N57D30Tx has 2000 bar fuel pressure. N57D30Ox uses single turbocharger, while N57D30Tx uses 2 turbochargers, and N57S uses 3 turbochargers of varying size.

• Bore x stroke: 84 mm (3.3 in) x 90 mm (3.5 in)

Applications:

Example Engine specification BMW X6 xDrive M50d 

• N57D30U0
  • 2010-2011 BMW 5 Series F10/F11 525d
  • 2010- BMW 3 Series E90/E91/E92/E93 325d
• N57D30O0
  • 2008- BMW 3 Series E90/E91/E92/E93 330d/330xd
  • 2010-2011 BMW 5 Series F10/F11 530d
  • 2009- BMW 5 Series GT F07 530d GT/530d xDrive GT
  • 2008-2012 BMW 7 Series F01/F02 730d/730Ld
  • 2010- BMW X5 E70 xDrive30d
  • 2010- BMW X6 E71 xDrive30d
• N57D30O1
  • 2011- BMW 5 Series F10/F11 530d
  • 2011- BMW X3 F25 X3 xDrive30d
  • 2012- BMW 3-Series F30/F31 330d
  • 2012- BMW 7 Series F01/F02 730d/730Ld
• N57D30T0
  • 2010-2011 BMW 5 Series F10/F11 535d
  • 2009- BMW 5 Series GT F07 535d GT/535d xDrive GT
  • 2009- BMW 7 Series F01 740d/740d xDrive
  • 2010- BMW X5 E70 xDrive40d
  • 2010- BMW X6 E71 xDrive40d
• N57D30T1
  • 2011- BMW 5 Series F10/F11 535d
  • 2011- BMW 6 Series F12/F13 640d
  • 2011- BMW X3 F25 X3 xDrive35d
  • 2013- BMW 3 Series F30/F31 335d
• N57S
  • 2012- BMW M550d xDrive
  • 2012- BMW 750d xDrive
  • 2012- BMW 750Ld xDrive
  • 2012- BMW X5 M50d
  • 2012- BMW X6 M50d

Recall for inadmissible software on the N57D30S1 in 2017

On a 750d xDrive in the spring of 2017 . On average, it released 646 mg / km of nitrogen oxides (NO _x ), which is about eight times the permissible limit value . 

On February 23, 2018 Spiegel Online reported that some models with N57 engines are equipped with - according to the interpretation of the mirror - "manipulated" exhaust gas software. BMW had confirmed the use of inadequate software at a hearing at the Kraftfahrtbundesamt in Flensburg on 22 February ;  Federal Transport Minister Scheuer (CSU) spoke in the further course of "inadmissible defeat devices " in the engine control. On 20 March 2018 it was reported that the Munich public prosecutor's office has initiated investigations against BMW "because of suspicion of fraud in the exhaust gas cleaning". There is a suspicion that BMW uses a test stand-related defeat device. Around 100 civil servants had searched premises in the BMW Group headquarters and in the Research and Innovation Center in Munich as well as in the Steyr diesel engine plant. 

According to BMW, copies of the vehicle types M550d xDrive Sedan (production 03/2012 to 10/2016), M550d xDrive Touring (production 03/2012 to 02/2017), 750d xDrive (production 07/2012 to 06/2015) and 750Ld xDrive are affected (Production 07/2012 to 06/2015): "Incorrectly, data entries were taken from a software version developed for vehicles with a different emission control system. This leads to increased NO _x emissions during longer journeys , since the regeneration of the NO _xstorage catalytic converter does not take place as planned. "  Harald Krüger, the CEO of BMW AG, said at the Annual General Meeting on May 17, 2018: "We made a mistake a few years ago"; Norbert Reithofer , Chairman of the Supervisory Board , spoke of a "technical, human error" that would not have led to lower emissions on the test bench than on the road. "With a targeted manipulation of engine control and exhaust gas cleaning has nothing to do," said Krüger. ^[

In a formal recall dated 13 March 2018, the Federal Motor Transport Authority asked BMW to "remove the existing inadmissible defeat devices in order to restore the vehicles to their correctness". According to BMW, this affects approximately 11,700 vehicles worldwide, of which around 9,300 across Europe (including Germany) and around 5,000 in Germany.  BMW launched the recall on May 29, 2018,  after the KBA had approved the software update by BMW.