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MG MGA

(1955 model)

Brief specs of 1955 MG MGA

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1489 cm3 / 90.9 cu in / 90.9 cu in, 50.7 kW / 68.0 hp / 68.0 hp @ 5500 rpm / 5500 rpm / 5500 rpm, 105.0 N·m / 77.4 lb·ft / 77.4 lb·ft @ 3500 rpm / 3500 rpm / 3500 rpm, manual 4-speed transmission, rear wheel drive, 157 km/h / 98 mph / 98 mph top speed

units: metric UK US

Basic (general) data

Marque (make)MGIssued from1955
ModelMGAIssued until
SerieMGANumber made
Model familyBody construction
Model codeBody designation
ManufacturerMGCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3962 mm / 156.0 in / 156.0 inTotal (curb) weight890 kg / 1962 lb / 1962 lb
Width1473 mm / 58.0 in / 58.0 inDry weight
Height1270 mm / 50.0 in / 50.0 inLoad capacity
Wheelbase2388 mm / 94.0 in / 94.0 inGross (max.) weight
Track front1207 mm / 47.5 in / 47.5 inTowing weight
Track rear1238 mm / 48.7 in / 48.7 inWeight distribution (front)
Ground clearance152 mm / 6.0 in / 6.0 inFuel capacity46 l / 10.0 UK gal / 12.0 US gal
Length/wheelbase ratio1.66  

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 ManufacturerMorrisValves per cylinder2
Engine constructionBore73.0 mm / 2.88 in / 2.88 in
Fuelpetrol (gasoline)Stroke88.9 mm / 3.50 in / 3.50 in
Fuel detailsBore/Stroke ratio0.82
Fuel supply2 SU carbsEngine displacement1489 cm3 / 90.9 cu in / 90.9 cu in
Engine Main bearingsUnitary capacity372.25 cm3/cylinder / 22.716 cu in/cylinder / 22.716 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.3 : 1
SumpMax. output power50.7 kW / 68.0 hp / 68.0 hp at 5500 rpm / 5500 rpm / 5500 rpm
AspirationnaturalMax. torque105.0 N·m / 77.4 lb·ft / 77.4 lb·ft at 3500 rpm / 3500 rpm / 3500 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)19.9 kW / 26.7 hp / 26.7 hp (est.)
CoolantwaterSpecific output34.0 kW/l / 0.748 bhp/cu in / 0.748 bhp/cu in
Catalytic converternoSpecific torque70.5 N·m/l / 0.62 lb·ft/cu in / 0.62 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.3

Performance

Acceleration 0-50 mph (80 km/h)10.80 s / 10.80 s / 10.80 sTop (maximal) speed157 km/h / 98 mph / 98 mph
Acceleration 0-60 mph (97 km/h)15.00 s / 15.00 s / 15.00 sPower-to-weight ratio76.4 kW/ton / 57.9 bhp/ton / 57.9 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 springs, Wishbone (A-arm, control arm)Suspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres front5.60-15Tyres rear5.60-15
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of MG MGA

Infobox

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