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BMW Turbo Prototype

(1972 model)

Brief specs of 1972 BMW Turbo Prototype

2-door 2-seater fixed-head coupé, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, SOHC (single overhead camshaft), 1991 cm3 / 121.5 cu in / 121.5 cu in, 96.0 kW / 128.7 hp / 128.7 hp @ 6000 rpm / 6000 rpm / 6000 rpm, 177.0 N·m / 130.5 lb·ft / 130.5 lb·ft, manual 4-speed transmission, rear wheel drive, 249 km/h / 155 mph / 155 mph top speed

units: metric UK US

Basic (general) data

Marque (make)BMWIssued from1972
ModelTurbo PrototypeIssued until
SerieconceptNumber made2
Model familyBody construction
Model codeBody designation
ManufacturerBMWCountryDE

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2
Bodywork designerPaul BracqCargo capacity (volume)
Passenger space (volume)3970 l / 140.20 cu ft / 140.20 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4144 mm / 163.1 in / 163.1 inTotal (curb) weight980 kg / 2161 lb / 2161 lb
Width1880 mm / 74.0 in / 74.0 inDry weight
Height1100 mm / 43.3 in / 43.3 inLoad capacity
Wheelbase2400 mm / 94.5 in / 94.5 inGross (max.) weight
Track front1550 mm / 61.0 in / 61.0 inTowing weight
Track rear1530 mm / 60.2 in / 60.2 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.73  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.4Frontal area (A)1.76 m2 / 18.9 sq ft / 18.9 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.70 m2 / 7.6 sq ft / 7.6 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)17.5 kW / 23.4 hp / 23.4 hp (est.)

Engine

Engine CodeTotal number of cylinders4
Engine Typestraight (inline) (Inline, 4 cylinder)Total number of valves8
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 supplyKugelfischer fuel injectionEngine displacement1991 cm3 / 121.5 cu in / 121.5 cu in
Engine Main bearingsUnitary capacity497.75 cm3/cylinder / 30.375 cu in/cylinder / 30.375 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio
SumpwetMax. output power96.0 kW / 128.7 hp / 128.7 hp at 6000 rpm / 6000 rpm / 6000 rpm
AspirationturbochargedMax. torque177.0 N·m / 130.5 lb·ft / 130.5 lb·ft at
Compressor typeMaximum rpm
IntercoolernoMax. net output (power at the wheels)62.8 kW / 84.2 hp / 84.2 hp (est.)
CoolantwaterSpecific output48.2 kW/l / 1.060 bhp/cu in / 1.060 bhp/cu in
Catalytic converternoSpecific torque88.9 N·m/l / 0.78 lb·ft/cu in / 0.78 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed249 km/h / 155 mph / 155 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio133.7 kW/ton / 101.3 bhp/ton / 101.3 bhp/ton
Acceleration 0-100 km/h7.00 s / 7.00 s / 7.00 sFuel 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 locationmiddleEngine alignmenttransverse
Steeringrack & pinionSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, MacPherson strut, Torsion barSuspension rear
Wheels frontWheels rear
Tyres front175/80-HR14Tyres rear165/80SR-13
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of BMW Turbo Prototype

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