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Triumph TR-3

(1955 model)

Brief specs of 1955 Triumph TR-3

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1991 cm3 / 121.5 cu in / 121.5 cu in, 74.6 kW / 100.0 hp / 100.0 hp @ 5000 rpm / 5000 rpm / 5000 rpm, 159.0 N·m / 117.3 lb·ft / 117.3 lb·ft @ 3000 rpm / 3000 rpm / 3000 rpm, manual with overdrive 4-speed transmission, rear wheel drive, 169 km/h / 105 mph / 105 mph top speed

units: metric UK US

Basic (general) data

Marque (make)TriumphIssued from1955
ModelTR-3Issued until
SerieTRNumber made
Model familyBody construction
Model codeBody designation
ManufacturerTriumphCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)3150 l / 111.24 cu ft / 111.24 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length3835 mm / 151.0 in / 151.0 inTotal (curb) weight904 kg / 1993 lb / 1993 lb
Width1410 mm / 55.5 in / 55.5 inDry weight
Height1270 mm / 50.0 in / 50.0 inLoad capacity
Wheelbase2238 mm / 88.1 in / 88.1 inGross (max.) weight
Track front1143 mm / 45.0 in / 45.0 inTowing weight
Track rear1156 mm / 45.5 in / 45.5 inWeight distribution (front)
Ground clearanceFuel capacity29 l / 6.4 UK gal / 7.7 US gal
Length/wheelbase ratio1.71  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.52 m2 / 16.4 sq ft / 16.4 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) (Inline, 4 cylinder)Total number of valves8
Engine ManufacturerTriumphValves per cylinder2
Engine constructionBore83.0 mm / 3.27 in / 3.27 in
Fuelpetrol (gasoline)Stroke92.0 mm / 3.62 in / 3.62 in
Fuel detailsBore/Stroke ratio0.9
Fuel supply2 SU carbsEngine displacement1991 cm3 / 121.5 cu in / 121.5 cu in
Engine Main bearingsUnitary capacity497.75 cm3/cylinder / 30.375 cu in/cylinder / 30.375 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio8.5 : 1
SumpMax. output power74.6 kW / 100.0 hp / 100.0 hp at 5000 rpm / 5000 rpm / 5000 rpm
AspirationnaturalMax. torque159.0 N·m / 117.3 lb·ft / 117.3 lb·ft at 3000 rpm / 3000 rpm / 3000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)25.1 kW / 33.7 hp / 33.7 hp (est.)
CoolantwaterSpecific output37.5 kW/l / 0.823 bhp/cu in / 0.823 bhp/cu in
Catalytic converternoSpecific torque79.9 N·m/l / 0.70 lb·ft/cu in / 0.70 lb·ft/cu in

Transmission

Transmission typemanual with overdriveNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)7.50 s / 7.50 s / 7.50 sTop (maximal) speed169 km/h / 105 mph / 105 mph
Acceleration 0-60 mph (97 km/h)12.50 s / 12.50 s / 12.50 sPower-to-weight ratio110.6 kW/ton / 83.8 bhp/ton / 83.8 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 frontIndependent, Coil springs, Wishbone (A-arm, control arm)Suspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontdiscBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Triumph TR-3

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