BMW N63
Encyclopedia
The N63 is a family of 4.4L, direct-injected
, twin-turbocharged V8 automobile engines produced by BMW since 2008.
The N63B44 features a reverse-flow air design in which the turbochargers are mounted in the engine valley and the intake manifolds are located on the sides of the block. This new design creates a more compact engine package and reduces the width of the assembled engine. The engine uses air-to-water intercoolers, which is more efficient and provides a shorter air path than using a standard air-to-air intercooler.
Similar to the N54B30
, the N63B44 does not use the second generation Valvetronic
technology found in other current 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, however, is used on the S63B44Tü for the 2013 BMW M5.
It was launched in 2008 as an engine powering the BMW X6 xDrive50i, and later the F01 BMW 750i
.
In terms of performance, the N63 is a close match to the N73
V12
engine found in the previous-generation E65 760i/Li, so the BMW N74
V12 engine
had to be redesigned for the F01 760i/Li in order to maintain its status as the flagship of the range.
Applications:
. It is found in the BMW X5M, BMW X6M, the high performance derivatives of BMW's Sports Activity Series
crossovers, and the BMW M5
sport sedan. The S63 features Cylinder-bank Comprehensive Manifold (cc). Engine is rated 555 PS (408 kW; 547 hp) at 6000 rpm and 680 N·m (500 lb·ft) at 1500-5650 rpm.
Using BMW's innovative "M Twin Power Turbo" engine with high precision Direct Injection and twin turbochargers as a basis, the new M engine introduces twin-scroll twin turbochargers and patented exhaust manifold technologies to achieve outstanding thrust and pulling force, while preserving the most compact dimensions possible. Two low-mass twin-scroll turbochargers are positioned together with the catalytic converters in the “V” section between the two banks of cylinders. By reversing the flow of gases through the engine from traditional arrangements, the intake and exhaust ducts are shortened and widened. The result is that pressure losses on the exhaust side are minimized.
The goals: virtually eliminate turbocharger lag while maximizing combustion efficiency and power output. Tremendous power and performance are delivered by the engine in the BMW X5 M and BMW X6 M through a new reverse flow design and construction principle.
The new M V8 engine with twin-scroll twin turbo technology uses a single exhaust manifold with tuned-length runners, incorporating both cylinder banks and connecting cylinders in carefully selected pairs. This configuration, patented by BMW M and known as Cylinder-bank Comprehensive Manifold (check this in Product Library), offers lightning-quick response, a linear build-up of engine power, and a broad, consistent torque curve by feeding each of the twin turbochargers with a “charge pulse” at approximately every 90 degrees of crankshaft rotation, rather than the more traditional “irregular schedule” of charging.
The managed flow of exhaust gas provided by the Cylinder bank Comprehensive Manifold ensures high-velocity flow of combustion gases. The appropriate separation of exhaust gas flow from different cylinders is maintained until the gas reaches the turbine wheel, spooling the two twin-scroll turbochargers without back-pressure. With maximum boost pressure, the use of twin-scroll twin turbo technology and the patented exhaust manifold allows complete exploitation of the benefits of turbocharging.
On the X5 M and X6 M, the S63 engine is mated to a 6-speed Steptronic automatic transmission and xDrive four-wheel drive.
For the F10 BMW M5 sedan, a variant known as the S63B44Tü has been tuned for an additional 5 more horsepower and makes 680 newton metre of torque available to 5750 rpm compared to 5650 rpm in SUV M models. The M5's engine produces 560 hp from 6000 to 7000 rpm while redline is at 7200 rpm. Compared to the regular S63, the S63 TU has the addition of throttleless Valvetronic
induction control, larger turbos and intercoolers, different injectors and control electronics, and a higher compression ratio of 10.0:1. On the BMW M5 (F10) engine is matted on 7 speed dual clutch transmission
, dropping the Getrag SMG III single-clutch semi-automatic transmission
used in the previous E60 M5 for Getrag 7DCI700 (same transmission is also found in E92 M3 DKG).
Applications:
which manufacturers production tuned versions of BMWs, in the ALPINA B5 Bi-Turbo Saloon/Touring and the ALPINA B7 Bi-Turbo saloon. The 2011 Alpina B7's twin-turbo 4.4-liter BMW V8 is assembled by hand at Alpina's facility in Buchloe, Germany, before being shipped to BMW for installation, and the assembled vehicle is then sent back to Alpina for finishing touches.
Alpina's variant of the N63 makes 507 PS / 700 newton metre, while retaining the same fuel economy as the regular N63. This is the first time that BMW M and Alpina are using the same type of forced-induction for their powerplants; Alpina's engine has less horsepower but more torque than the BMW S63.
An 8-speed Sport Automatic Transmission with SWITCH-TRONIC is used in the B5, while a ZF
six-speed automatic sport transmission with heavy-duty gears (taken from ZF's transmissions for trucks) is found in the B7. The B7 also features a choice of regular or long-wheelbase and/or optional xDrive.
Alpina's modifications to the standard N63 include high-performance pistons and reinforced cylinder heads to withstand the additional stress from a higher compression ratio. A larger intercooler, with a 35-percent increase in surface area, is fitted to lower intake temperatures. An additional radiator lowers coolant temperatures, and external coolers are added for the engine and transmission oil. The electric fan is also upgraded to increase airflow through the new high-performance components. To move more oxygen through the engine, larger and lighter turbochargers (the vanes measure 44 mm in diameter) are fitted to keep the whole package running smoothly and Alpina engine management software increases boost to 14.5 psi (1.0 bar vs. the standard engine's 0.8 bar) and recalibrates both stability- and traction-control with more aggressive settings. The blowers exhale into three air-to-liquid intercoolers, an arrangement that helps maintain maximum airflow even during long lapping sessions at a racetrack. There is also a bigger (2.7-inch) dual exhaust system that vents gasses out the back through the rear apron.
Gasoline direct injection
In internal combustion engines, gasoline direct injection , also known as petrol direct injection or direct petrol injection, is a variant of fuel injection employed in modern two-stroke and four-stroke gasoline engines...
, twin-turbocharged V8 automobile engines produced by BMW since 2008.
Specifications
| Engine | Displacement (cc) | Power @rpm | Torque @rpm | Redline (rpm) | Year |
|---|---|---|---|---|---|
| N63B44 | 4395 | 408 PS@5500-6400 | 600 newton metres (442.5 ft·lbf)@1750-4500 | 7000 | 2008- |
The N63B44 features a reverse-flow air design in which the turbochargers are mounted in the engine valley and the intake manifolds are located on the sides of the block. This new design creates a more compact engine package and reduces the width of the assembled engine. The engine uses air-to-water intercoolers, which is more efficient and provides a shorter air path than using a standard air-to-air intercooler.
Similar to the N54B30
BMW N54
The N54 is a direct injection twin-turbocharged straight-6 automobile engine from BMW. It was launched in late 2006 as a high-performance option for the BMW 3-Series, first to be released along with the new 3-series E92 Coupé, to be followed closely by other existing 3-series models, then with...
, the N63B44 does not use the second generation Valvetronic
Valvetronic
The Valvetronic system is a variable valve timing system to offer continuous and precisely variable intake valve lift, from ~0 to 10 mm, and duration. It typically works in conjunction with the independent Double VANOS system that continuously varies the timing...
technology found in other current 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, however, is used on the S63B44Tü for the 2013 BMW M5.
It was launched in 2008 as an engine powering the BMW X6 xDrive50i, and later the F01 BMW 750i
BMW F01
The BMW F01 is the current BMW 7 series that went into production in September 2008. The long-wheelbase model, codenamed BMW F02, is longer than the BMW F01.-Presentation:...
.
In terms of performance, the N63 is a close match to the N73
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...
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....
engine found in the previous-generation E65 760i/Li, so the BMW N74
BMW N74
The N74 a V12 engine built by BMW in Munich, Germany. As of 2009 it is the company's flagship engine in the 7-Series, only being offered in the Li long wheelbase variant....
V12 engine
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....
had to be redesigned for the F01 760i/Li in order to maintain its status as the flagship of the range.
Applications:
- 2008– E71 X6 xDrive50iBMW X6The BMW X6 is a mid-size luxury crossover released for sale in the second quarter of 2008 by German automaker BMW. The X6 was marketed as a Sports Activity Coupé by BMW...
- 2009– F01/F02BMW F01The BMW F01 is the current BMW 7 series that went into production in September 2008. The long-wheelbase model, codenamed BMW F02, is longer than the BMW F01.-Presentation:...
750i/750Li sDrive/xDrive - 2010– F10/F11 550i sDrive/xDrive
- 2010– F07 550i GT sDrive/xDriveBMW 5 Series Gran TurismoThe BMW 5 Series Gran Turismo is an executive or mid-size car from German manufacturer BMW, which was first displayed at the 2009 Geneva Motor Show as a concept car...
- 2011– E70BMW E70The BMW E70 is the development name for the current X5 Sports Activity Vehicle . It replaced the BMW X5 in November 2006. It is manufactured alongside the new, 2008 BMW X6 at BMW's Greer, South Carolina plant in the USA and BMW's facility in Toluca, Mexico.-Design:The new generation BMW X5 is ...
X5 xDrive50iBMW X5The BMW X5 is a luxury crossover SUV introduced in 1999 as the first generation E53. It was BMW's first SUV also known as "Four-by-Four" in the UK. It features all-wheel drive which is branded as the "X" drive system and is available with either manual or automatic transmission... - 2012– F12/F13 650i sDrive
S63
The S63 is a tuned version of the N63 engine by BMW's Motorsport divisionBMW M
BMW M GmbH is a subsidiary of German car manufacturer BMW AG.BMW M, also known as M-Technik or just "M" was initially created to facilitate BMW’s racing program, which was very successful in the 1960s and 1970s...
. It is found in the BMW X5M, BMW X6M, the high performance derivatives of BMW's Sports Activity Series
BMW Sports Activity Series
The sports activity vehicle and coupe series is a marketing description by BMW to describe a line of vehicles that traditionally were in the crossover Sport Utility Vehicle class....
crossovers, and the BMW M5
BMW M5
The first BMW M5, based on the E28 5 Series, made its debut at Amsterdam Motor Show in February 1984. It was the product of demand for an automobile with the carrying capacity of a saloon , but the overall performance of a sports car. It utilized the 535i chassis and an evolution of the engine from...
sport sedan. The S63 features Cylinder-bank Comprehensive Manifold (cc). Engine is rated 555 PS (408 kW; 547 hp) at 6000 rpm and 680 N·m (500 lb·ft) at 1500-5650 rpm.
Using BMW's innovative "M Twin Power Turbo" engine with high precision Direct Injection and twin turbochargers as a basis, the new M engine introduces twin-scroll twin turbochargers and patented exhaust manifold technologies to achieve outstanding thrust and pulling force, while preserving the most compact dimensions possible. Two low-mass twin-scroll turbochargers are positioned together with the catalytic converters in the “V” section between the two banks of cylinders. By reversing the flow of gases through the engine from traditional arrangements, the intake and exhaust ducts are shortened and widened. The result is that pressure losses on the exhaust side are minimized.
The goals: virtually eliminate turbocharger lag while maximizing combustion efficiency and power output. Tremendous power and performance are delivered by the engine in the BMW X5 M and BMW X6 M through a new reverse flow design and construction principle.
The new M V8 engine with twin-scroll twin turbo technology uses a single exhaust manifold with tuned-length runners, incorporating both cylinder banks and connecting cylinders in carefully selected pairs. This configuration, patented by BMW M and known as Cylinder-bank Comprehensive Manifold (check this in Product Library), offers lightning-quick response, a linear build-up of engine power, and a broad, consistent torque curve by feeding each of the twin turbochargers with a “charge pulse” at approximately every 90 degrees of crankshaft rotation, rather than the more traditional “irregular schedule” of charging.
The managed flow of exhaust gas provided by the Cylinder bank Comprehensive Manifold ensures high-velocity flow of combustion gases. The appropriate separation of exhaust gas flow from different cylinders is maintained until the gas reaches the turbine wheel, spooling the two twin-scroll turbochargers without back-pressure. With maximum boost pressure, the use of twin-scroll twin turbo technology and the patented exhaust manifold allows complete exploitation of the benefits of turbocharging.
On the X5 M and X6 M, the S63 engine is mated to a 6-speed Steptronic automatic transmission and xDrive four-wheel drive.
For the F10 BMW M5 sedan, a variant known as the S63B44Tü has been tuned for an additional 5 more horsepower and makes 680 newton metre of torque available to 5750 rpm compared to 5650 rpm in SUV M models. The M5's engine produces 560 hp from 6000 to 7000 rpm while redline is at 7200 rpm. Compared to the regular S63, the S63 TU has the addition of throttleless Valvetronic
Valvetronic
The Valvetronic system is a variable valve timing system to offer continuous and precisely variable intake valve lift, from ~0 to 10 mm, and duration. It typically works in conjunction with the independent Double VANOS system that continuously varies the timing...
induction control, larger turbos and intercoolers, different injectors and control electronics, and a higher compression ratio of 10.0:1. On the BMW M5 (F10) engine is matted on 7 speed dual clutch transmission
Dual clutch transmission
A dual clutch transmission, commonly abbreviated to DCT , is a differing type of semi-automatic or automated manual automotive transmission. It utilises two separate clutches for odd and even gear sets...
, dropping the Getrag SMG III single-clutch semi-automatic transmission
Semi-automatic transmission
A semi-automatic transmission is an automobile transmission that does not change gears automatically, but rather facilitates manual gear changes by dispensing with the need to press...
used in the previous E60 M5 for Getrag 7DCI700 (same transmission is also found in E92 M3 DKG).
Applications:
- 2010– E70 X5 MBMW X5The BMW X5 is a luxury crossover SUV introduced in 1999 as the first generation E53. It was BMW's first SUV also known as "Four-by-Four" in the UK. It features all-wheel drive which is branded as the "X" drive system and is available with either manual or automatic transmission...
- 2010– E71 X6 MBMW X6The BMW X6 is a mid-size luxury crossover released for sale in the second quarter of 2008 by German automaker BMW. The X6 was marketed as a Sports Activity Coupé by BMW...
- 2012– F10 M5BMW M5The first BMW M5, based on the E28 5 Series, made its debut at Amsterdam Motor Show in February 1984. It was the product of demand for an automobile with the carrying capacity of a saloon , but the overall performance of a sports car. It utilized the 535i chassis and an evolution of the engine from...
| Engine | Displacement (cc) | Power @rpm | Torque @rpm | Boost | Redline (rpm) | Year |
|---|---|---|---|---|---|---|
| S63B44 | 4395 | 555 PS@6000 | 680 newton metres (501.5 ft·lbf)@1500-5650 | 1.2 bar (17.4 psi) | 7000 | 2009- |
| S63B44Tü | 4395 | 560 PS@5750-7000 | 680 newton metres (501.5 ft·lbf)@1500-5750 | 1.5 bar (21.8 psi) | 7200 | 2011- |
Alpina
The N63 is also used in a modified state of tune by Alpina Burkard Bovensiepen GmbHAlpina
Alpina Burkard Bovensiepen GmbH is an automobile manufacturing company based in Buchloe, in the Ostallgäu district of Bavaria, Germany selling their own cars, based on BMW cars....
which manufacturers production tuned versions of BMWs, in the ALPINA B5 Bi-Turbo Saloon/Touring and the ALPINA B7 Bi-Turbo saloon. The 2011 Alpina B7's twin-turbo 4.4-liter BMW V8 is assembled by hand at Alpina's facility in Buchloe, Germany, before being shipped to BMW for installation, and the assembled vehicle is then sent back to Alpina for finishing touches.
Alpina's variant of the N63 makes 507 PS / 700 newton metre, while retaining the same fuel economy as the regular N63. This is the first time that BMW M and Alpina are using the same type of forced-induction for their powerplants; Alpina's engine has less horsepower but more torque than the BMW S63.
An 8-speed Sport Automatic Transmission with SWITCH-TRONIC is used in the B5, while a ZF
ZF Friedrichshafen
ZF Friedrichshafen AG, also known as ZF Group, and commonly abbreviated to ZF, is a German public company headquartered in Friedrichshafen, in the south-west German region of Baden-Württemberg....
six-speed automatic sport transmission with heavy-duty gears (taken from ZF's transmissions for trucks) is found in the B7. The B7 also features a choice of regular or long-wheelbase and/or optional xDrive.
Alpina's modifications to the standard N63 include high-performance pistons and reinforced cylinder heads to withstand the additional stress from a higher compression ratio. A larger intercooler, with a 35-percent increase in surface area, is fitted to lower intake temperatures. An additional radiator lowers coolant temperatures, and external coolers are added for the engine and transmission oil. The electric fan is also upgraded to increase airflow through the new high-performance components. To move more oxygen through the engine, larger and lighter turbochargers (the vanes measure 44 mm in diameter) are fitted to keep the whole package running smoothly and Alpina engine management software increases boost to 14.5 psi (1.0 bar vs. the standard engine's 0.8 bar) and recalibrates both stability- and traction-control with more aggressive settings. The blowers exhale into three air-to-liquid intercoolers, an arrangement that helps maintain maximum airflow even during long lapping sessions at a racetrack. There is also a bigger (2.7-inch) dual exhaust system that vents gasses out the back through the rear apron.