BMW L68B, 6.8L V8 Bentley 6.8L V8

Потужний V8 двигун Bentley, відомий своєю надійністю та високим крутним моментом.

Brand: Bentley Type: Petrol Configuration: V8 Production Years: 1959 - теперішній час Production: Crewe, England
22 Brand engines
2 Modifications

Technical Specifications

Engine Displacement 6.8 L (6,750 cc)
Configuration V8
Number of Cylinders 8
Valves per Cylinder 2
Power 200 - 530 л.с.
Torque 400 - 1100 Н*м
Cylinder Bore 104.10 mm
Piston Stroke 99.10 mm
Compression Ratio 8.0:1
Firing Order 1-5-4-8-6-3-7-2
Fuel System Multi-point Fuel Injection
Aspiration Turbocharged
Turbocharger Garrett T3
Intercooler Yes
Maximum RPM 4,500 rpm
Max Torque RPM 2,000 rpm
Valve Train OHV
Timing Drive Chain
Block Material Aluminum
Head Material Aluminum
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family Bentley L-series
Manufacturing Plant Crewe, England

Maintenance

Engine Oil Capacity 10 L (with filter: 10.5 L)
Recommended Viscosity 5W-40
Oil Standard API SN
Recommended Brands Castrol, Mobil 1, Shell
Oil Change Interval 10 000 km or 12 mo
Oil Filter 03C115561D
Air Filter 07C133843
Replace every 40 000 km
Fuel filter 07C133511
Cabin Filter 07C819644
Spark Plugs Type: Platinum
Part number: 101905601F
Gap: 0.8 mm
Quantity: 8 pcs
Replace every 60 000 km
Coolant Capacity 18 L
Coolant Type G12 (Bentley Coolant)
Coolant Change Interval 100 000 km
Thermostat Opening Temperature 88°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 1500-2000 USD

Reliability

Reliability rating: 9/10

Expected lifespan: 400 000 km

Common problems

Problem Severity Mileage Repair cost
Oil leaks from valve cover gaskets Medium 100000-150000 km $500-1000

Known defects

  • Early models had issues with head gasket durability

Warranty extensions

  • Extended warranty available for turbocharger issues

Tuning potential

Tuning potential: Medium | Max. safe power: 750 hp

Stage Power Torque Method Cost
Stage 1 600 hp 1200 Nm ECU remap
Reliability impact: Minimal 		$2000
Stage 2 650 hp 1300 Nm ECU, Exhaust System
Required: Upgraded intercooler, Exhaust system
Reliability impact: Low 		$5000
Stage 3 700 hp 1400 Nm -
Required: Bigger turbo, Forged internals
Reliability impact: Medium 		$15000

Popular modifications

  • Exhaust system upgrade
  • ECU remap
  • Cold air intake

Tuning limitations

  • Transmission limitations above 700hp

Cars with the BMW L68B, 6.8L V8 engine

This engine was fitted to 1 model

Photo Brand Model Generation Production years
No photo
 Bentley Arnage Arnage 1999 - 2007

All modifications (2)

Vehicle Generation Modification Power Gearbox Drive
Bentley Arnage Arnage 6.75 V8 450 л.с. 5-Автомат 2WD 450 hp 5-Автомат 2WD
Bentley Arnage Arnage 6.75 V8 450 л.с. 6-Автомат 4x4 450 hp 6-Автомат 4x4

Interesting Facts

  • The Bentley 6.8L V8 has been in continuous production since 1959.
  • It is one of the longest-serving V8 engines in automotive history.

Applications

Total produced: unknown

Vehicle Generation Years Power Markets
Bentley Mulsanne 2010-2020 2010-2020 505hp/530hp Global

Compatible transmissions: 8-speed Automatic

Drive types: RWD

Fuel Economy

Fuel Type Petrol 98
Octane Rating Minimum: 95 | Recommended: 98
Consumption (City) 20 L/100km
Consumption (Highway) 12 L/100km
Consumption (Combined) 15 L/100km
Real Consumption 16.5 L/100km
Fuel Tank Capacity 90 L
Range 600 km
Cost per 100 km 25-30 USD

Emissions Standards

Emission Standard Euro 5
CO₂ Emissions 350 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Awards and Recognition

  • Engine of the Year (2012) — Luxury Performance

Comparison with competitors

Engine Brand Displacement Power Torque
M278 Mercedes-Benz 4,663 cc 455 hp 700 Nm

Pros

  • High torque output
  • Smooth power delivery
  • Iconic engine with a long history

Cons

  • High fuel consumption
  • Expensive maintenance