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BMW 3.0 Si

(1971 model)

Brief specs of 1971 BMW 3.0 Si

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, SOHC (single overhead camshaft), 2986 cm3 / 182.2 cu in / 182.2 cu in, 149.1 kW / 199.9 hp / 199.9 hp @ 6000 rpm / 6000 rpm / 6000 rpm, 271.0 N·m / 199.9 lb·ft / 199.9 lb·ft @ 3700 rpm / 3700 rpm / 3700 rpm, manual 4-speed transmission, rear wheel drive, 211 km/h / 131 mph / 131 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1971
Model3.0 SiIssued until
Serie3Number made
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE,ZA

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)4210 l / 148.67 cu ft / 148.67 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4710 mm / 185.4 in / 185.4 inTotal (curb) weight1380 kg / 3042 lb / 3042 lb
Width1750 mm / 68.9 in / 68.9 inDry weight
Height1450 mm / 57.1 in / 57.1 inLoad capacity
Wheelbase2690 mm / 105.9 in / 105.9 inGross (max.) weight
Track front1446 mm / 56.9 in / 56.9 inTowing weight
Track rear1464 mm / 57.6 in / 57.6 inWeight distribution (front)
Ground clearance140 mm / 5.5 in / 5.5 inFuel capacity75 l / 16.5 UK gal / 19.8 US gal
Length/wheelbase ratio1.75  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.16 m2 / 23.2 sq ft / 23.2 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerBMWValves per cylinder2
Engine constructionBore89.0 mm / 3.50 in / 3.50 in
Fuelpetrol (gasoline)Stroke80.0 mm / 3.15 in / 3.15 in
Fuel detailsBore/Stroke ratio1.11
Fuel supplyBo fuel inj.Engine displacement2986 cm3 / 182.2 cu in / 182.2 cu in
Engine Main bearings7Unitary capacity497.67 cm3/cylinder / 30.370 cu in/cylinder / 30.370 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio9.5 : 1
SumpMax. output power149.1 kW / 199.9 hp / 199.9 hp at 6000 rpm / 6000 rpm / 6000 rpm
AspirationnaturalMax. torque271.0 N·m / 199.9 lb·ft / 199.9 lb·ft at 3700 rpm / 3700 rpm / 3700 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)17.4 kW / 23.4 hp / 23.4 hp (est.)
CoolantwaterSpecific output49.9 kW/l / 1.097 bhp/cu in / 1.097 bhp/cu in
Catalytic converternoSpecific torque90.8 N·m/l / 0.79 lb·ft/cu in / 0.79 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.45

Performance

Acceleration 0-50 mph (80 km/h)7.80 s / 7.80 s / 7.80 sTop (maximal) speed211 km/h / 131 mph / 131 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio144.9 kW/ton / 109.8 bhp/ton / 109.8 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
Steeringworm & roller PASSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Lower wishbone, Coil springs, Anti-roll (anti-sway) bar (ARB)Suspension rearIndependent, Semi-trailing arm, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels frontWheels rear
Tyres front165/80-SR13Tyres rear165/80-SR13
Brakes frontdiscBrakes reardisc
Brake diameter frontBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of BMW 3.0 Si

Infobox

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