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Citroën GS Birotor

(1973 model)

Brief specs of 1973 Citroën GS Birotor

5-door 5-seater sedan (saloon), petrol (gasoline) 2-cylinder rotary (Wankel) engine, 1990 cm3 / 121.4 cu in / 121.4 cu in, 79.0 kW / 105.9 hp / 105.9 hp @ 6500 rpm / 6500 rpm / 6500 rpm, 137.0 N·m / 101.0 lb·ft / 101.0 lb·ft @ 3000 rpm / 3000 rpm / 3000 rpm, semi-automatic (clutchless manual) 3-speed transmission, front wheel drive, 175 km/h / 109 mph / 109 mph top speed

units: metric UK US

Basic (general) data

Marque (make)CitroënIssued from1973
ModelGS BirotorIssued until
SerieGSNumber made
Model familyBody construction
Model codeBody designation
ManufacturerCitroënCountryFR

Bodywork

Base platformNumber of doors5
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)5590 l / 197.41 cu ft / 197.41 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4121 mm / 162.2 in / 162.2 inTotal (curb) weight1140 kg / 2513 lb / 2513 lb
Width1645 mm / 64.8 in / 64.8 inDry weight
Height1372 mm / 54.0 in / 54.0 inLoad capacity
Wheelbase2562 mm / 100.9 in / 100.9 inGross (max.) weight
Track front1427 mm / 56.2 in / 56.2 inTowing weight
Track rear1341 mm / 52.8 in / 52.8 inWeight distribution (front)
Ground clearanceFuel capacity57 l / 12.5 UK gal / 15.0 US gal
Length/wheelbase ratio1.61  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.92 m2 / 20.6 sq ft / 20.6 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders2
Engine Typerotary (Wankel) (Dual disk Wankel)Total number of valves
Engine ManufacturerCitroënValves per cylinder
Engine constructionBore
Fuelpetrol (gasoline)Stroke
Fuel detailsBore/Stroke ratio
Fuel supplyEngine displacement1990 cm3 / 121.4 cu in / 121.4 cu in
Engine Main bearingsUnitary capacity995.00 cm3/cylinder / 60.719 cu in/cylinder / 60.719 cu in/cylinder
Cam DesignCompression ratio9.0 : 1
SumpMax. output power79.0 kW / 105.9 hp / 105.9 hp at 6500 rpm / 6500 rpm / 6500 rpm
AspirationnaturalMax. torque137.0 N·m / 101.0 lb·ft / 101.0 lb·ft at 3000 rpm / 3000 rpm / 3000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)29.2 kW / 39.1 hp / 39.1 hp (est.)
CoolantwaterSpecific output39.7 kW/l / 0.872 bhp/cu in / 0.872 bhp/cu in
Catalytic converternoSpecific torque68.8 N·m/l / 0.60 lb·ft/cu in / 0.60 lb·ft/cu in

Transmission

Transmission typesemi-automatic (clutchless manual)Number of gears3
Wheel drivefront wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed175 km/h / 109 mph / 109 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio93.0 kW/ton / 70.4 bhp/ton / 70.4 bhp/ton
Acceleration 0-100 km/h14.00 s / 14.00 s / 14.00 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 locationfrontEngine alignmenttransverse
Steeringrack & pinionSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent,HSSuspension rearIndependent,HS
Wheels frontWheels rear
Tyres front165 HR 14Tyres rear165 HR 14
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Citroën GS Birotor

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