BMW M70
Encyclopedia
The BMW
M70 is a V12
piston engine and featured heavily in the 7-Series and 8-Series BMWs
of the late 80s and early 1990s. Models included:
The M70 was succeeded by the M73
.
Applications
Applications
. The S70/2 was a complete redesign from M70 with no common parts, featuring a lighter and smaller engine block. The S70/2 is similar to the S50B30 engine from the E36 M3 in that the S70/2 features dual VANOS with two position adjustable variable intake valve timing.
Applications
engine meant for racing. Later destroked to 5990 cc in 1997.
Applications
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...
M70 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 and featured heavily in the 7-Series and 8-Series BMWs
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...
of the late 80s and early 1990s. Models included:
- 1988–1994 BMW 750i
- 1988–1994 BMW 750iL
- 1991–1993 BMW 850i
- 1993–1995 BMW 850Ci
- 1994–1996 BMW 850Csi
The M70 was succeeded by the M73
BMW M73
The BMW M73 is a V12 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...
.
| Engine | Displacement | Power | Torque | Redline | Year |
|---|---|---|---|---|---|
| M70B50 | rowspan=2|4988 cc | 220 kW @ 5200 | 450 newton metres (331.9 ft·lbf) @ 4100 | 6000 | 1988 |
| 220 kW @ 5200 | 450 newton metres (331.9 ft·lbf) @ 4100 | 6000 | 1988 |
Euro Specifications
- Displacement: 4988 cc
- 12 cylinderCylinder (engine)A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...
V-arrangement 60 degree - 24 valves
- Compression: 8.8:1
- Stroke/Bore: 75 mm (3 in)/84 mm (3.3 in)
- Firing Order: 1-7-5-11-3-9-6-12-2-8-4-10
- Separate twin-ECU engine management (each one for each bank)
- Max power: 220 kW @ 5300 rpm
- Max torque: 450 newton metre @ 4000 rpm
- Max rpm: 6000–6400 rpm *Gearing
Applications
- 1986–1994 E32BMW E32After almost 7 years in development since September 1979, in July 1986, BMW introduced the second generation of the 7 series, known internally as the E32. Aimed at the high end of the luxury market, the car offered some of the latest innovations in automotive technology, and a new, top-of-the-line...
7-Series - 1989–1999 E31 8-Series
S70B56
5.6 L versionApplications
- 1992–1996 E31 8-Series
- Developed specifically for the 1992 BMW 850CSi, a BMW Motorsport vehicle
- Lowest production engine in BMW history—1,510 units
- Engine was used in a few supercarSupercarSupercar is a term used most often to describe an expensive high end car. It has been defined specifically as "a very expensive, fast or powerful car"...
s of the late 1990s
S70/2
6064 cc version developed for the McLaren F1McLaren F1
The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...
. The S70/2 was a complete redesign from M70 with no common parts, featuring a lighter and smaller engine block. The S70/2 is similar to the S50B30 engine from the E36 M3 in that the S70/2 features dual VANOS with two position adjustable variable intake valve timing.
Applications
- 1993–1998 McLaren F1McLaren F1The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...
- 1998–1999 BMW V12 LMBMW V12 LMThe BMW V12 LM was a racing car built for sports car racing in 1998. The car was built using a combination of WilliamsF1 engineering and construction and a BMW powerplant...
- 1999–2000 BMW V12 LMR
- 2000 BMW X5 LM Prototype
S70/3
6064 cc version, further refinement of the McLaren F1McLaren F1
The McLaren F1 is a supercar designed and manufactured by McLaren Automotive. Originally a concept conceived by Gordon Murray, he convinced Ron Dennis to back the project and engaged Peter Stevens to design the exterior of the car...
engine meant for racing. Later destroked to 5990 cc in 1997.
Applications
- 1995–1996 McLaren F1 GTRMcLaren F1 GTRThe McLaren F1 GTR was a racing variant of the McLaren F1 sports car first produced in 1995 for grand touring style racing, such as the BPR Global GT Series, FIA GT Championship, JGTC, and British GT Championship. It is most famous for its overall victory at the 1995 24 Hours of Le Mans where it...
(6.1 L) - 1997 McLaren F1 GTRMcLaren F1 GTRThe McLaren F1 GTR was a racing variant of the McLaren F1 sports car first produced in 1995 for grand touring style racing, such as the BPR Global GT Series, FIA GT Championship, JGTC, and British GT Championship. It is most famous for its overall victory at the 1995 24 Hours of Le Mans where it...
(6.0 L)
External links
- Johan & Sean's E32 Page - Homepage containing detailed DIY and engine rebuild information for the M70 engine as well as links to official BMW AG engine specs and component descriptions.