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Austin-Healey 100 M

(1955 model)

Brief specs of 1955 Austin-Healey 100 M

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 2660 cm3 / 162.3 cu in / 162.3 cu in, 82.0 kW / 110.0 hp / 110.0 hp @ 4500 rpm / 4500 rpm / 4500 rpm, 195.0 N·m / 143.8 lb·ft / 143.8 lb·ft @ 2000 rpm / 2000 rpm / 2000 rpm, manual with overdrive 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)Austin-HealeyIssued from1955
Model100 MIssued until
Serie100Number made3924
Model familyBody construction
Model codeBody designation
ManufacturerAustin-HealeyCountryUK

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

Length3848 mm / 151.5 in / 151.5 inTotal (curb) weight1041 kg / 2295 lb / 2295 lb
Width1537 mm / 60.5 in / 60.5 inDry weight
Height1245 mm / 49.0 in / 49.0 inLoad capacity
Wheelbase2286 mm / 90.0 in / 90.0 inGross (max.) weight
Track front1245 mm / 49.0 in / 49.0 inTowing weight
Track rear1289 mm / 50.7 in / 50.7 inWeight distribution (front)
Ground clearance140 mm / 5.5 in / 5.5 inFuel capacity55 l / 12.0 UK gal / 14.4 US gal
Length/wheelbase ratio1.68  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.63 m2 / 17.5 sq ft / 17.5 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 ManufacturerAustinValves per cylinder2
Engine constructionBore87.3 mm / 3.44 in / 3.44 in
Fuelpetrol (gasoline)Stroke111.1 mm / 4.37 in / 4.37 in
Fuel detailsBore/Stroke ratio0.79
Fuel supply2 SU H6 carbsEngine displacement2660 cm3 / 162.3 cu in / 162.3 cu in
Engine Main bearings3Unitary capacity665.00 cm3/cylinder / 40.581 cu in/cylinder / 40.581 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.1 : 1
SumpwetMax. output power82.0 kW / 110.0 hp / 110.0 hp at 4500 rpm / 4500 rpm / 4500 rpm
AspirationnaturalMax. torque195.0 N·m / 143.8 lb·ft / 143.8 lb·ft at 2000 rpm / 2000 rpm / 2000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)32.8 kW / 44.0 hp / 44.0 hp (est.)
CoolantwaterSpecific output30.8 kW/l / 0.678 bhp/cu in / 0.678 bhp/cu in
Catalytic converternoSpecific torque73.3 N·m/l / 0.64 lb·ft/cu in / 0.64 lb·ft/cu in

Transmission

Transmission typemanual with overdriveNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.78
  Final gear (drive) ratio4.1

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio105.7 kW/ton / 80.1 bhp/ton / 80.1 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 & pegSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Coil springs, Wishbone (A-arm, control arm), Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres front5.50-16Tyres rear5.50-16
Brakes frontdrumBrakes reardrum
Brake diameter front280 mm / 11.0 in / 11.0 inBrake diameter rear280 mm / 11.0 in / 11.0 in
Brakes detailsBraked area

Technical specifications and performance data of Austin-Healey 100 M

Infobox

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