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Morgan 4/4 S II

(1955 model)

Brief specs of 1955 Morgan 4/4 S II

2-door 4-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, side valves (flathead, L-block, L-head), 1172 cm3 / 71.5 cu in / 71.5 cu in, 26.8 kW / 35.9 hp / 35.9 hp @ 4400 rpm / 4400 rpm / 4400 rpm, 73.0 N·m / 53.8 lb·ft / 53.8 lb·ft @ 2150 rpm / 2150 rpm / 2150 rpm, manual 4-speed transmission, rear wheel drive, 121 km/h / 75 mph / 75 mph top speed

units: metric UK US

Basic (general) data

Marque (make)MorganIssued from1955
Model4/4 S IIIssued until
Serie4/4Number made
Model familyBody construction
Model codeBody designation
ManufacturerMorganCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats4
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3658 mm / 144.0 in / 144.0 inTotal (curb) weight660 kg / 1455 lb / 1455 lb
Width1422 mm / 56.0 in / 56.0 inDry weight
Height1245 mm / 49.0 in / 49.0 inLoad capacity
Wheelbase2438 mm / 96.0 in / 96.0 inGross (max.) weight
Track front1194 mm / 47.0 in / 47.0 inTowing weight
Track rear1194 mm / 47.0 in / 47.0 inWeight distribution (front)
Ground clearance178 mm / 7.0 in / 7.0 inFuel capacity36 l / 8.0 UK gal / 9.6 US gal
Length/wheelbase ratio1.5  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.50 m2 / 16.2 sq ft / 16.2 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 ManufacturerFordValves per cylinder2
Engine constructionBore63.5 mm / 2.50 in / 2.50 in
Fuelpetrol (gasoline)Stroke92.5 mm / 3.64 in / 3.64 in
Fuel detailsBore/Stroke ratio0.69
Fuel supply1 So carbEngine displacement1172 cm3 / 71.5 cu in / 71.5 cu in
Engine Main bearingsUnitary capacity293.00 cm3/cylinder / 17.880 cu in/cylinder / 17.880 cu in/cylinder
Cam Designside valves (flathead, L-block, L-head)Compression ratio7.0 : 1
SumpMax. output power26.8 kW / 35.9 hp / 35.9 hp at 4400 rpm / 4400 rpm / 4400 rpm
AspirationnaturalMax. torque73.0 N·m / 53.8 lb·ft / 53.8 lb·ft at 2150 rpm / 2150 rpm / 2150 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)5.9 kW / 7.9 hp / 7.9 hp (est.)
CoolantwaterSpecific output22.9 kW/l / 0.503 bhp/cu in / 0.503 bhp/cu in
Catalytic converternoSpecific torque62.3 N·m/l / 0.54 lb·ft/cu in / 0.54 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.44

Performance

Acceleration 0-50 mph (80 km/h)18.00 s / 18.00 s / 18.00 sTop (maximal) speed121 km/h / 75 mph / 75 mph
Acceleration 0-60 mph (97 km/h)29.40 s / 29.40 s / 29.40 sPower-to-weight ratio54.5 kW/ton / 41.3 bhp/ton / 41.3 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
Steeringcam gearsSteering details
Turns lock-to-lockTurning circle9.6 m / 31.5 ft / 31.5 ft
Suspension frontIndependent, Coil springsSuspension rearLive axle, Coil springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Morgan 4/4 S II

Infobox

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