BMW N52

(Redirected from BMW R6)

The 'BMW N52' is the BMW's latest straight-6 engine, which debuted in 2004 on the BMW E63 630Ci. Its crankcase is made entirely of magnesium and aluminum, a first in the world of engine construction. BMW used Alusil aluminum cylinder sleeves, which offer high heat conductivity, and cast them into a lightweight magnesium block
^[1], creating one of the lightest production engines of its size class in the world at 161kg/354lbs.
It includes BMW's second generation Valvetronic system and Double-VANOS for fuel-efficiency (12% fuel savings over the previous generation BMW M54 engine - and increases performance. Producing 63kW (85.5hp) per liter of displacement, it has the lowest weight per horsepower of any six cylinder engine (1.24hp per kilogram with the latest version). It is the world’s lightest six-cylinder engine.
It was awarded as one of Ward's 10 Best Engines of the Year in 2006 and 2007. Technologically it is even more advanced than the new N54B30 bi-turbo, which is based on an older M54B30 design and lacks several improvements that BMW has made for this engine.
All BMWs are available with this engine in at least one version - the only exception being the X5 which still uses the predecessor, M54B30 as its 3.0 Liter gasoline engine option.
The N52 is BMW's 12th generation production straight-6 engine.
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'Models'

Engine	Displacement	Power	Torque	Redline	Year
N52B25	2.5 L (2497 ccm/152 in³)	130 kW (174 hp) @ 5800	230 N·m (170 ft·lbf) @ 3500-5000	7000rpm	2005
		160 kW (215 hp) @ 6500	250 N·m (184 ft·lbf) @ 2750-4250	7000rpm	2005
N52B30	3.0 L (2996 ccm/182 in³)	190 kW (255 hp) @ 6600	300 N·m (221 ft·lbf) @ 2500-4000	7000rpm	2004
		195 kW (265 hp) @ 6600	315 N·m (232 ft·lbf) @ 2750-4250	7000rpm	2005
		200 kW (272 hp) @ 6650	315 N·m (232 ft·lbf) @ 2750-4250	7000rpm	2006

Contents

N52B25

N52B30

See also

References

External links

N52B25

The 'N52B25' comes in two versions, both displacing 2.5 L (2497 ccm/152 in³). The first produces 130 kW (174 hp) at 5800 rpm and 230 N·m (170 ft·lbf) at 3500-5000 rpm while the more powerful version is rated at 160 kW (215 hp) at 6500 rpm and 250 N·m (184 ft·lbf) at 2750-4250 rpm.
Applications:

★ 130 kW (174 hp) and 230 N·m (170 ft·lbf)

★
★ E60/E61 523i (Not in the US market) Sedan and Touring

★
★ E90 323i (Not in the US market) Sedan

★ 160 kW (215 hp) and 250 N·m (184 ft·lbf)

★
★ E90/E91/E92/E93 325i/325xi Sedan, Touring, Coupè and Convertible

★
★ E83 X3 2.5si (Not in the US market) Sports Activity Vehicle

★
★ E85 Z4 2.5si (Not in the US market) Roadster

N52B30

The 'N52B30' comes in three versions, all displacing 3.0 L (2996 ccm/182 in³) and produces variable outputs depending on the BMW model that it comes with (with changes to the variable resonance system-omitted, dual plenum runner system-also omitted and variable back pressure muffler-omitted) 190 kW (255 hp) at 6600 and 300 N·m (221 ft·lbf) at 2500-4000 rpm is the first and most produced version, while the second one is more powerful at 195 kW (265 hp) at 6600 and 315 N·m (232 ft·lbf) at 2750-4250 rpm. The third version is just starting to replace the first 190kW versions on the E90/E60 in Late 2006 and has first been released on the new E92 330i Coupè. It will produce 200 kW (272 hp) at 6650 and 315 N·m (232 ft·lbf) at 2750-4250 rpm.
Applications in the 'US' Market (taken from BMWUSA website 07/10/07):

★ 260 hp (195 kW) @ 6600RPM and 225 ft·lbf (305 N·m) @ 2750RPM

★
★ E83 X3 3.0si Sports Activity Vehicle

★
★ E70 X5 3.0si Sports Activity Vehicle

★ 255 hp (190 kW) @ 6600RPM and 220 ft·lbf (300 N·m) @ 2750RPM

★
★ E85/E86 Z4 3.0si Roadster and Coupè

★ 230 hp (172 kW) @ 6500RPM and 200 ft·lbf (271 N·m) @ 2750RPM

★
★ E92/E93 328i/328xi Sedan, Coupè, (inc 4WD versions) and the upcoming Hardtop Convertible

★
★ E60/E61 528i/528xi Sedan and Touring (inc 4WD versions)

★ 215 hp (160 kW) @ 6250RPM and 185 ft·lbf (250 N·m) @ 2750RPM

★
★ E85 Z4 3.0i Roadster

★ 230 hp (172 kW) @ 6500RPM and 200 ft-lbf (271 N·m) @ 2750RPM

★
★ E82 128i Coupè
Applications in the 'European' Market (taken from BMW website 07/10/07):

★ 200 kW (272 PS,268 hp) @ 6700RPM and 320 N•m @ 2750RPM

★
★ E92/E93 330i/330Ci Sedan, Coupè and the upcoming Hardtop Convertible

★
★ E60/E61 530i Sedan and Touring
NB: All X30i models will soon receive this version of the N52B30 engine.

★ 200 kW (272 PS,268 hp) @ 6650RPM and 315 N•m @ 2750RPM

★
★ E83 X3 3.0si Sports Activity Vehicle

★
★ E70 X5 3.0si Sports Activity Vehicle

★ 195 kW (265 PS,262 hp) @ 6650RPM and 315 N•m @ 2750RPM

★
★ E85/E86 Z4 3.0si Roadster and Coupè

★
★ E87 130i Hatchback

★ 190 kW (258 PS,255 hp) @ 6600RPM and 300 N•m @ 2500RPM

★
★ E63/E64 630i Sedan

★
★ E65/E66 730i Sedan

★ 160 kW (218 PS,215 hp) @ 6100RPM and 270 N•m @ 2400RPM

★
★ E60/E61 525i Sedan and Touring

See also

★ BMW engines

★ BMW vehicles

References

1. BMW Pushes Lightweight Technology, World Car Fans May 2005.

External links

★ WorldCarFans.com - BMW's New Six-Cylinder Engines - In Depth