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Triumph TR-7 (USA)

(1975 model)

Brief specs of 1975 Triumph TR-7 (USA)

2-door 2-seater fixed-head coupé, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, SOHC (single overhead camshaft), 1998 cm3 / 121.9 cu in / 121.9 cu in, 66.4 kW / 89.0 hp / 89.0 hp @ 5250 rpm / 5250 rpm / 5250 rpm, 135.0 N·m / 99.6 lb·ft / 99.6 lb·ft @ 2500 rpm / 2500 rpm / 2500 rpm, manual 5-speed transmission, rear wheel drive, 172 km/h / 107 mph / 107 mph top speed

units: metric UK US

Basic (general) data

Marque (make)TriumphIssued from1975
ModelTR-7 (USA)Issued until
SerieTRNumber made
Model familyBody construction
Model codeBody designation
ManufacturerTriumphCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typefixed-head coupéNumber of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length4170 mm / 164.2 in / 164.2 inTotal (curb) weight
Width1681 mm / 66.2 in / 66.2 inDry weight
Height1267 mm / 49.9 in / 49.9 inLoad capacity
Wheelbase2160 mm / 85.0 in / 85.0 inGross (max.) weight
Track front1410 mm / 55.5 in / 55.5 inTowing weight
Track rear1410 mm / 55.5 in / 55.5 inWeight distribution (front)
Ground clearance90 mm / 3.5 in / 3.5 inFuel capacity55 l / 12.1 UK gal / 14.5 US gal
Length/wheelbase ratio1.93  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.81 m2 / 19.5 sq ft / 19.5 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 ManufacturerTriumphValves per cylinder2
Engine constructionBore90.3 mm / 3.56 in / 3.56 in
Fuelpetrol (gasoline)Stroke78.0 mm / 3.07 in / 3.07 in
Fuel detailsBore/Stroke ratio1.16
Fuel supply2 St carbsEngine displacement1998 cm3 / 121.9 cu in / 121.9 cu in
Engine Main bearings5Unitary capacity499.50 cm3/cylinder / 30.481 cu in/cylinder / 30.481 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio8.0 : 1
SumpMax. output power66.4 kW / 89.0 hp / 89.0 hp at 5250 rpm / 5250 rpm / 5250 rpm
AspirationnaturalMax. torque135.0 N·m / 99.6 lb·ft / 99.6 lb·ft at 2500 rpm / 2500 rpm / 2500 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)26.6 kW / 35.6 hp / 35.6 hp (est.)
CoolantwaterSpecific output33.2 kW/l / 0.730 bhp/cu in / 0.730 bhp/cu in
Catalytic converterSpecific torque67.6 N·m/l / 0.59 lb·ft/cu in / 0.59 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears5
Wheel driverear wheel driveTop gear (drive) ratio0.83
  Final gear (drive) ratio3.9

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed172 km/h / 107 mph / 107 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio
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-lock3.87Turning circle
Suspension frontIndependent, MacPherson strut, Lower wishbone, Anti-roll (anti-sway) bar (ARB)Suspension rearLive axle, Trailing arm, Semi-trailing arm, Coil springs, Anti-roll (anti-sway) bar (ARB)
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontdiscBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Triumph TR-7 (USA)

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