BMW 635 CSi

BMW 6 series 1982 3.4 petrol description

Coupe BMW 635 CSi has been produced from October, 1982 to December, 1987. It has six-cylinder petrol engine with displacement of 3.4 litres, which produces power of 218 horsepower on 5500 rpm 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, this is an atmospheric engine (without turbine). The engine meets the Euro 2 emissions standard. Engine lifespan (mileage before major repairs or overhaul) can last from 310 up to 520 thousand kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs 
This BMW 6 series 3.4 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 with 4 gears.
BMW 635 CSi accelerates to speed 100 kilometres per hour in 9 seconds. The maximum speed of this car is 221 km/h.

BMW 635 CSi fuel consumption is 10 litres per 100km in combined city/highway mode (10 km/l) - this is the most fuel efficient BMW 6 sērija 1982 - 1989 version, fuel consumption in city - 14.8 l/100km, highway fuel economy - 6.8 l/100km. Fuel tank capacity is 70 litres or 18.49 gallons, which gives a mileage up to 700 kilometers without refueling in urban cycle and even up to 1020 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 11.8 litres per 100 km, which is 18% more than the manufacturer's stated. More - Real BMW 6 series fuel consumption.

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 1.6 seconds faster (in 7.4 seconds), but manufacturer's fuel consumption is similar - 10.0 litres per 100 km, whereas users reported real fuel consumption is higher by 0.4 litres per 100 km or 3 % - 12.2 litres per 100 km.
BMW 6 series 1982

BMW 635 CSi technical data

Model: BMW 635 CSi
Body style: Coupe
Production period: 1982. October ... 1987. December 
Engine: 3430 cm3 Petrol, 6 cylinders CO2 emissions: no data
Power: 218 HP ON 5500 RPM Torque: 310 NM ON 4000 RPM
Gearbox: Automatic gearbox (4 gears) Drive type: Rear wheel drive (RWD)
Top speed: 221 km/h Acceleration 0-100 km/h: 9.0 seconds
Fuel consumption (l/100km): 10.0 (combined) 14.8 (urban) 6.8 (highway)
Real fuel consumption: 11.8 l/100km (19.9 MPG) by user reviews from various sources
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 M30B34

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.
Engine displacement 3430 cm3
Number of cylinders 6
Bore (cylinder diameter) 92 mm
Stroke length (piston move) 86 mm
Compression ratio 8 : 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)
Coolant capacity 12 litres (12.7 quarts)
Power 185 - 252 HP ON 5500 RPM
Torque 290 - 380 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 [1982 - 1989] modifications

Modification Engine Power Consumption Gearbox
BMW 628 CSi Oct 1982 — Sep 1987

Most fuel efficient version

2.8 Petrol 184 HP 10.0 l/100km Manual (5)
BMW 628 CSi Oct 1982 — Sep 1987

Most fuel efficient version

2.8 Petrol 184 HP 10.0 l/100km Automatic (4)
BMW 635 CSi Sep 1987 — Dec 1989 3.4 Petrol 211 HP 12.0 l/100km Manual (5)
BMW 635 CSi Sep 1987 — Dec 1989 3.4 Petrol 211 HP 12.0 l/100km Automatic (4)
BMW 635 CSi Oct 1982 — Dec 1987

Most fuel efficient version

3.4 Petrol 218 HP 10.0 l/100km Manual (5)
BMW 635 CSi Oct 1982 — Dec 1987

Most fuel efficient version

3.4 Petrol 218 HP 10.0 l/100km Automatic (4)
BMW M 635 CSi Jan 1984 — Dec 1987

Most dynamic version - 100 km/h in 6.4 seconds

3.5 Petrol 286 HP 11.3 l/100km Manual (5)
BMW 6 series 1982 reviews
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