BMW 840 Ci

BMW 8 series 1989 4.0 petrol description

Coupe BMW 840 Ci has been produced from January, 1993 to March, 1996. It has eight-cylinder petrol engine with displacement of 4.0 litres, which produces power of 286 horsepower on 5800 rpm and torque 400 Nm (Newton metres) on 4500 revolutions per minute.

This 8-cylinder 32-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system, this is an atmospheric engine (without turbine). The engine meets the Euro 1 emissions standard. Engine lifespan (mileage before major repairs or overhaul) can last from 310 up to 520 thousand kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
This BMW 8 series 4.0 engine oil type is 5W-30 and oil capacity is 7.5 litres.

BMW 840 Ci has classical rear wheel drive (RWD) and automatic gearbox with 5 gears.
BMW 840 Ci accelerates to speed 100 kilometres per hour in 7.4 seconds. The maximum speed of this car is 250 km/h.

BMW 840 Ci fuel consumption is 11 litres per 100km in combined city/highway mode (9.1 km/l) - this is the most fuel efficient BMW 8 sērija 1989 - 1999 version. Fuel tank capacity is 90 litres or 23.78 gallons, which gives a mileage up to 800 kilometers without refueling in urban cycle.

With the same engine there is also BMW 8 series version with manual gearbox (BMW 840i 4.0 MT) available, which is more dynamic - it reaches 100 km/h 0.5 seconds faster (in 6.9 seconds), but manufacturer's fuel consumption is higher by 1.8 litres per 100 km or 16 % - 12.8 litres per 100 km.
BMW 8 series 1989

BMW 840 Ci technical data

Model: BMW 840 Ci
Body style: Coupe
Production period: 1993. January ... 1996. March 
Engine: 3982 cm3 Petrol, 8 cylinders CO2 emissions: no data
Power: 286 HP ON 5800 RPM Torque: 400 NM ON 4500 RPM
Gearbox: Automatic gearbox (5 gears) Drive type: Rear wheel drive (RWD)
Top speed: 250 km/h Acceleration 0-100 km/h: 7.4 seconds
Fuel consumption (l/100km): 11.0 (combined)
Fuel tank capacity: 90 litres (23.8 gallons)
Car dimensions: 4.78m (length) 1.86m (width) 1.34m (height)
Turning diameter: 12 meters
Trunk capacity: 320 litres
Gross weight: 2230 kg

BMW 840 Ci engine M60B40

Engine reliability:

Overall, this engine can last around 310,000 to 520,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
Engine displacement 3982 cm3
Number of cylinders 8
Bore (cylinder diameter) 89 mm
Stroke length (piston move) 80 mm
Compression ratio 10 : 1
Camshaft drive Timing chain

Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more.

Fuel system Injection
BMW 840 Ci oil type 5W-30
Oil capacity 7.5 litres (7.9 quarts)
Power 286 HP ON 5800 RPM
Torque 400 NM ON 4500 RPM
Start of production (year) 1992
Duration of production 4 years
Engine also used on BMW 5 sērija BMW 7 sērija

All BMW 8 series coupe [1989 - 1999] modifications

Modification Engine Power Consumption Gearbox
BMW 830i 3.0 Jan 1992 — Dec 1992 3.0 Diesel 218 HP - Manual (6)
BMW 840i 4.0 Jan 1993 — Dec 1996 4.0 Petrol 286 HP 12.8 l/100km Manual (6)
BMW 840 Ci Jan 1993 — Mar 1996

Most fuel efficient petrol version

4.0 Petrol 286 HP 11.0 l/100km Automatic (5)
BMW 840 Ci Mar 1996 — Jul 1999 4.4 Petrol 286 HP 13.0 l/100km Manual (6)
BMW 840 Ci Mar 1996 — Jul 1999 4.4 Petrol 286 HP 13.0 l/100km Automatic (5)
BMW 850i Oct 1989 — Oct 1992

Most fuel efficient petrol version by real consumption

5.0 Petrol 300 HP 13.0 l/100km Manual (6)
BMW 850 Ci Oct 1992 — Mar 1996 5.0 Petrol 300 HP 13.0 l/100km Manual (6)
BMW 850i Oct 1989 — Oct 1992 5.0 Petrol 300 HP 13.0 l/100km Automatic (4)
BMW 850 Ci Oct 1992 — Mar 1996 5.0 Petrol 300 HP 13.0 l/100km Automatic (4)
BMW 850 Ci Mar 1996 — Jul 1999 5.0 Petrol 300 HP 14.0 l/100km Automatic (5)
BMW 850Ci 5.4 Jan 1994 — Dec 1999 5.4 Petrol 326 HP 14.0 l/100km Automatic (5)
BMW 850 CSi Oct 1992 — Sep 1996

Most dynamic version - 100 km/h in 6 seconds

5.6 Petrol 381 HP 18.0 l/100km Manual (6)
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