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Ginetta G21S

(1974 model)

Brief specs of 1974 Ginetta G21S

2-door 2+2-seater fixed-head coupé, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1725 cm3 / 105.3 cu in / 105.3 cu in, 73.1 kW / 98.0 hp / 98.0 hp @ 5200 rpm / 5200 rpm / 5200 rpm, 144.0 N·m / 106.2 lb·ft / 106.2 lb·ft @ 4000 rpm / 4000 rpm / 4000 rpm, manual with overdrive 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)GinettaIssued from1974
ModelG21SIssued until
SerieG21Number made
Model familyBody construction
Model codeBody designation
ManufacturerGinettaCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2+2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3975 mm / 156.5 in / 156.5 inTotal (curb) weight737 kg / 1625 lb / 1625 lb
Width1600 mm / 63.0 in / 63.0 inDry weight
Height1168 mm / 46.0 in / 46.0 inLoad capacity
Wheelbase2311 mm / 91.0 in / 91.0 inGross (max.) weight
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearance127 mm / 5.0 in / 5.0 inFuel capacity46 l / 10.0 UK gal / 12.0 US gal
Length/wheelbase ratio1.72  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.59 m2 / 17.1 sq ft / 17.1 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders4
Engine Typestraight (inline) Total number of valves8
Engine ManufacturerHillmanValves per cylinder2
Engine constructionBore81.5 mm / 3.21 in / 3.21 in
Fuelpetrol (gasoline)Stroke82.7 mm / 3.25 in / 3.25 in
Fuel detailsBore/Stroke ratio0.99
Fuel supply2 We carbsEngine displacement1725 cm3 / 105.3 cu in / 105.3 cu in
Engine Main bearings5Unitary capacity431.25 cm3/cylinder / 26.316 cu in/cylinder / 26.316 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio9.6 : 1
SumpMax. output power73.1 kW / 98.0 hp / 98.0 hp at 5200 rpm / 5200 rpm / 5200 rpm
AspirationnaturalMax. torque144.0 N·m / 106.2 lb·ft / 106.2 lb·ft at 4000 rpm / 4000 rpm / 4000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)29.2 kW / 39.2 hp / 39.2 hp (est.)
CoolantwaterSpecific output42.4 kW/l / 0.931 bhp/cu in / 0.931 bhp/cu in
Catalytic converternoSpecific torque83.5 N·m/l / 0.73 lb·ft/cu in / 0.73 lb·ft/cu in

Transmission

Transmission typemanual with overdriveNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.8
  Final gear (drive) ratio3.7

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio133.0 kW/ton / 100.7 bhp/ton / 100.7 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
Steeringrack & pinionSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Coil springsSuspension rearLive axle, Coil springs
Wheels frontWheels rear
Tyres front165-13Tyres rear165-13
Brakes frontdiscBrakes reardrum
Brake diameter front244 mm / 9.6 in / 9.6 inBrake diameter rear229 mm / 9.0 in / 9.0 in
Brakes detailsBraked area

Technical specifications and performance data of Ginetta G21S

Infobox

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