M70B50 BMW M70B50

BMW M70B50 - це 5.0-літровий V12 двигун, що використовувався в моделях BMW 7-ї серії та 8-ї серії. Відомий своєю плавністю роботи та потужністю, але вимагає регулярного обслуговування для підтримки надійності.

Brand: BMW Type: Petrol Configuration: V12 Production Years: 1987 - 1994 Production: Munich, Germany
86 Brand engines
3 Modifications

Technical Specifications

Engine Displacement 5.0 L (4,988 cc)
Configuration V12
Number of Cylinders 12
Valves per Cylinder 2
Power 295 - 300 л.с.
Torque 450 Н*м
Cylinder Bore 84.00 mm
Piston Stroke 75.00 mm
Compression Ratio 8.8:1
Firing Order 1-7-5-11-3-9-6-12-2-8-4-10
Fuel System Multi-point fuel injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 4,100 rpm
Valve Train SOHC
Timing Drive Chain
Timing Chain Replacement 250000 or as needed
Block Material Aluminum
Head Material Aluminum
Engine Weight 240 kg
Dimensions (L×W×H) null mm
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family BMW M70 engine series
Manufacturing Plant Munich, Germany
Successor M73B54

Maintenance

Engine Oil Capacity 8 L (with filter: 8.5 L)
Recommended Viscosity 10W-40
Oil Standard API SJ/CF
Recommended Brands Castrol GTX, Mobil Super, Shell Helix
Oil Change Interval 10 000 km or 12 mo
Oil Filter 11421745390
Air Filter 13721730946
Replace every 30 000 km
Fuel filter 13321740985
Spark Plugs Type: Copper
Part number: 12121725017
Gap: 0.8 mm
Quantity: 12 pcs
Replace every 30 000 km
Coolant Capacity 15 L
Coolant Type G11 (BMW Coolant)
Coolant Change Interval 60 000 km
Thermostat Opening Temperature 80°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 1000-1500 USD

Reliability

Reliability rating: 8/10

Expected lifespan: 250 000 km

Common problems

Problem Severity Mileage Repair cost
Valve cover gasket leaks Medium 100000-150000 km $300-500
Intake manifold gasket leaks Medium 120000-180000 km $400-600

Known defects

  • Early models had issues with the fuel injectors
  • Alternator bracket prone to cracking

Tuning potential

Tuning potential: Medium | Max. safe power: 450 hp

Stage Power Torque Method Cost
Stage 1 330 hp 480 Nm ECU remap only
Reliability impact: Minimal 		$1000
Stage 2 360 hp 500 Nm ECU, Exhaust System
Required: Exhaust system upgrade, ECU remap
Reliability impact: Low 		$3000
Stage 3 400 hp 550 Nm -
Required: Forced induction, Forged internals, Upgraded fuel system
Reliability impact: Medium-High 		$10000

Popular modifications

  • Cold air intake
  • Performance exhaust
  • ECU tuning

Tuning limitations

  • Limited by the naturally aspirated design
  • Cooling system upgrades required for high power

Детальні технічні характеристики

4
модифікацій
299–350
к.с.

Спільні характеристики

Back suspension Independent, spring
Body type Coupe
Boost type none
Capacity 4988 cm3
Car class S
Compression ratio 8.8
Country Germany
Cylinder bore 84 mm
Cylinder layout V-type
Engine code M70B50
Engine model M70B50
Engine placement central
Engine type Gasoline
Front brakes Disc
Front suspension Independent, spring
Fuel 95
Height 1105 mm
Injection type distributed injection (multipoint)
Number of cylinders 12
Number of doors 2
Number of seater 2
Rear brakes Disc
Steering wheel position Left
Stroke cycle 75 mm
Timing belt OHC
Valves per cylinder 2
Wheelbase 2600 mm

Модифікації двигуна

5.0 MT (299 hp)
Привід Rear wheel drive КПП Manual Nazca 2 (C2) 1992–1993
299 hp
engine
Maximum torque 450 N*m
Turnover of maximum torque 4100 RPM
performance
Acceleration (0-100 km/h) 4.5 s
Max speed 290 km/h
transmission
Drive wheels Rear wheel drive
Gearbox type Manual
Number of gear 5
dimensions
Back track width 1630 mm
Curb weight 1100 kg
Front track width 1610 mm
Length 4365 mm
Width 1990 mm
5.0 MT (350 hp)
Привід Rear wheel drive КПП Manual Nazca 2 (C2) 1992–1993
350 hp
engine
Fuel tank capacity 70 l
Maximum torque 470 N*m
Turnover of maximum torque 4000 RPM
performance
Acceleration (0-100 km/h) 4.2 s
Max speed 297 km/h
fuel
Mixed driving fuel consumption per 100 km 10.4 l
transmission
Drive wheels Rear wheel drive
Gearbox type Manual
Number of gear 6
dimensions
Curb weight 1000 kg
Length 4395 mm
Width 2085 mm
5.0 MT RWD (299 hp)
Привід Rear wheel drive КПП Manual Nazca 2 (C2) 1992–1993
299 hp
engine
Engine power 299 hp
Max power (kW) 220 kW
Max power at RPM 5200 RPM
Maximum torque 450 N*m
Turnover of maximum torque 4100 RPM
performance
Acceleration (0-100 km/h) 4.5 s
Max speed 290 km/h
transmission
Drive wheels Rear wheel drive
Gearbox type Manual
Number of gear 5
dimensions
Back track width 1630 mm
Curb weight 1100 kg
Front track width 1610 mm
Length 4365 mm
Width 1990 mm
5.0 MT RWD (350 hp)
Привід Rear wheel drive КПП Manual Nazca 2 (C2) 1992–1993
350 hp
engine
Engine power 350 hp
Fuel tank capacity 70 l
Max power (kW) 257 kW
Max power at RPM 5300 RPM
Maximum torque 470 N*m
Turnover of maximum torque 4000 RPM
performance
Acceleration (0-100 km/h) 4.2 s
Max speed 297 km/h
fuel
Mixed driving fuel consumption per 100 km 10.4 l
transmission
Drive wheels Rear wheel drive
Gearbox type Manual
Number of gear 6
dimensions
Curb weight 1000 kg
Length 4395 mm
Width 2085 mm

Cars with the M70B50 engine

This engine was fitted to 2 models

Photo Brand Model Generation Production years
No photo
 BMW 8 Series 8 series (E31) 1990 - 1999
No photo
 Alpina B12 B12 (E31) 1988 - 1994

All modifications (3)

Vehicle Generation Modification Power Gearbox Drive
BMW 8 Series 8 series (E31) BMW 850i 5.0 л. 6-Автомат 2WD 300 hp 6-Автомат 2WD
Alpina B12 B12 (E31) B12 5.0 V12 300 л.с. 6-МКП 2WD 300 hp 6-МКП 2WD
Alpina B12 B12 (E31) B12 5.0 V12 350 л.с. 6-Автомат 2WD 350 hp 6-Автомат 2WD

Interesting Facts

  • First BMW V12 engine in the modern era
  • Used in the iconic BMW 850i

Applications

Total produced: null

Vehicle Generation Years Power Markets
BMW 7 Series E32 1987-1994 300hp Europe, USA
BMW 8 Series E31 1989-1994 300hp Europe, USA

Compatible transmissions: 4-speed Automatic, 5-speed Manual

Drive types: RWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 91 | Recommended: 95
Consumption (City) 18 L/100km
Consumption (Highway) 10 L/100km
Consumption (Combined) 14 L/100km
Real Consumption 15.5 L/100km
Fuel Tank Capacity 90 L
Range 643 km
Cost per 100 km 20-25 USD

Emissions Standards

Emission Standard Euro 1
CO₂ Emissions 320 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
1GZ-FE Toyota 4,996 cc 276 hp 481 Nm

Pros

  • Smooth and refined power delivery
  • Iconic status among BMW enthusiasts

Cons

  • High fuel consumption
  • Expensive maintenance