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MG TB

(1939 model)

Brief specs of 1939 MG TB

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1250 cm3 / 76.3 cu in / 76.3 cu in, 40.3 kW / 54.0 hp / 54.0 hp @ 5200 rpm / 5200 rpm / 5200 rpm, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)MGIssued from1939
ModelTBIssued until
SerieTBNumber 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

Length3543 mm / 139.5 in / 139.5 inTotal (curb) weight737 kg / 1625 lb / 1625 lb
Width1422 mm / 56.0 in / 56.0 inDry weight
HeightLoad capacity
Wheelbase2388 mm / 94.0 in / 94.0 inGross (max.) weight
Track front1143 mm / 45.0 in / 45.0 inTowing weight
Track rear1143 mm / 45.0 in / 45.0 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.48  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)
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 ManufacturerBMCValves per cylinder2
Engine constructionBore66.5 mm / 2.62 in / 2.62 in
Fuelpetrol (gasoline)Stroke90.0 mm / 3.54 in / 3.54 in
Fuel detailsBore/Stroke ratio0.74
Fuel supply2 SU carbsEngine displacement1250 cm3 / 76.3 cu in / 76.3 cu in
Engine Main bearingsUnitary capacity312.50 cm3/cylinder / 19.070 cu in/cylinder / 19.070 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio7.3 : 1
SumpMax. output power40.3 kW / 54.0 hp / 54.0 hp at 5200 rpm / 5200 rpm / 5200 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)16.1 kW / 21.6 hp / 21.6 hp (est.)
CoolantwaterSpecific output32.2 kW/l / 0.708 bhp/cu in / 0.708 bhp/cu in
Catalytic converternoSpecific torque

Transmission

Transmission typeNumber of gears
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio73.3 kW/ton / 55.5 bhp/ton / 55.5 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
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontSuspension rear
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of MG TB

Infobox

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