BMW 635 CSi

BMW 6 series 1976 3.5 petrol description

Coupe BMW 635 CSi has been produced from July, 1978 to August, 1982. It has six-cylinder petrol engine with displacement of 3.5 litres, which produces power of 218 horsepower on 5200 rpm - this is the most powerfull BMW 6 sērija 1976 - 1982 version and torque 310 Nm (Newton metres) on 4000 revolutions per minute.

This 6-cylinder 12-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system without turbocharger. The engine meets the Euro 1 emissions standard. Average engine life expectancy (mileage before serious repairs are needed) is from 320 000 to 540 000 kilometres. It is important to remember that engine life is highly dependent on regular maintenance and the quality of the oils and fuels used.
More engine specs 
This BMW 6 series 3.5 engine oil type is 5W-30 and oil capacity is 5.75 litres.

BMW 635 CSi has classical rear wheel drive (RWD) and automatic gearbox.
BMW 635 CSi accelerates to speed 100 kilometres per hour in 9.1 seconds. The maximum speed of this car is 214 km/h.

The fuel consumption of this BMW 635 CSi in combined mode (combining urban and highway driving) is 12 litres per 100km (8.3 km/l) - this is one of most fuel efficient BMW 6 sērija 1976 - 1982 versions. Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 580 kilometers without refueling in urban cycle.

With the same engine there is also BMW 6 series version with manual gearbox (BMW 635 CSi MT) available, which is more dynamic - it reaches 100 km/h 1.5 seconds faster (in 7.6 seconds), but manufacturer's fuel consumption is higher by 1 litres per 100 km or 8 % - 13.0 litres per 100 km.
BMW 6 series 1976

BMW 635 CSi technical data

Model: BMW 635 CSi
Body style: Coupe
Production period: 1978. July ... 1982. August 
Engine: 3453 cm3 Petrol, 6 cylinders CO2 emissions: no data
Power: 218 HP ON 5200 RPM Torque: 310 NM ON 4000 RPM
Gearbox: Automatic gearbox Drive type: Rear wheel drive (RWD)
Maximum speed: 214 km/h Acceleration 0-100 km/h: 9.1 seconds
Fuel consumption (l/100km): 12.0 (combined)
Fuel tank capacity: 70 litres (18.5 gallons)
Car dimensions: 4.76m (length) 1.72m (width) 1.36m (height)
Turning diameter: 11 meters
Trunk capacity: 413 litres
Gross weight: 1850 kg

BMW 635 CSi engine M30B35

Engine reliability:

Overall, this engine can last around 320,000 to 540,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
Engine displacement 3453 cm3
Number of cylinders 6
Bore (cylinder diameter) 93.4 mm
Stroke length (piston move) 84 mm
Compression ratio 9 : 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 635 CSi oil type 5W-30
Oil capacity 5.75 litres (6.1 quarts)
Power 218 HP ON 5200 RPM
Torque 310 NM ON 4000 RPM
Start of production (year) 1968
Duration of production 24 years
Engine also used on BMW 5 sērija

All BMW 6 series coupe [1976 - 1982] modifications

Modification Engine Power Consumption Gearbox
BMW 628 CSi Oct 1979 — Aug 1982 2.8 Petrol 184 HP 12.0 l/100km Manual (4)
BMW 628 CSi Oct 1979 — Aug 1982 2.8 Petrol 184 HP 12.0 l/100km Automatic
BMW 630 CS Jan 1976 — Dec 1979

Most fuel efficient version

3.0 Petrol 185 HP 11.4 l/100km Manual (4)
BMW 630 CS Jan 1976 — Dec 1979 3.0 Petrol 185 HP 12.4 l/100km Automatic
BMW 633 CSi Jul 1976 — Aug 1982 3.2 Petrol 197 HP 12.0 l/100km Manual (4)
BMW 633 CSi Jul 1976 — Aug 1982 3.2 Petrol 197 HP 12.0 l/100km Automatic
BMW 635 CSi Jul 1978 — Aug 1982

Most dynamic version - 100 km/h in 7.6 seconds

3.5 Petrol 218 HP 13.0 l/100km Manual (5)
BMW 635 CSi Jul 1978 — Aug 1982

Most powerfull version (218 HP)

3.5 Petrol 218 HP 12.0 l/100km Automatic
BMW 6 series 1976 reviews
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