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Triumph TR-4

(1961 model)

Brief specs of 1961 Triumph TR-4

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 2138 cm3 / 130.5 cu in / 130.5 cu in, 74.6 kW / 100.0 hp / 100.0 hp @ 4600 rpm / 4600 rpm / 4600 rpm, 172.0 N·m / 126.9 lb·ft / 126.9 lb·ft @ 3350 rpm / 3350 rpm / 3350 rpm, manual 4-speed transmission, rear wheel drive, 165 km/h / 103 mph / 103 mph top speed

units: metric UK US

Basic (general) data

Marque (make)TriumphIssued from1961
ModelTR-4Issued 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)3350 l / 118.30 cu ft / 118.30 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length3962 mm / 156.0 in / 156.0 inTotal (curb) weight966 kg / 2130 lb / 2130 lb
Width1461 mm / 57.5 in / 57.5 inDry weight
Height1270 mm / 50.0 in / 50.0 inLoad capacity
Wheelbase2238 mm / 88.1 in / 88.1 inGross (max.) weight
Track front1245 mm / 49.0 in / 49.0 inTowing weight
Track rear1219 mm / 48.0 in / 48.0 inWeight distribution (front)
Ground clearance152 mm / 6.0 in / 6.0 inFuel capacity53 l / 11.7 UK gal / 14.1 US gal
Length/wheelbase ratio1.77  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)0.5Frontal area (A)1.58 m2 / 17.0 sq ft / 17.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)0.79 m2 / 8.5 sq ft / 8.5 sq ft (est.)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)19.6 kW / 26.3 hp / 26.3 hp (est.)

Engine

Engine CodeTotal number of cylinders4
Engine Typestraight (inline) (Inline, 4 cylinder)Total number of valves8
Engine ManufacturerTriumphValves per cylinder2
Engine constructionBore86.0 mm / 3.39 in / 3.39 in
Fuelpetrol (gasoline)Stroke92.0 mm / 3.62 in / 3.62 in
Fuel detailsBore/Stroke ratio0.93
Fuel supply2 SU carbsEngine displacement2138 cm3 / 130.5 cu in / 130.5 cu in
Engine Main bearings5Unitary capacity534.50 cm3/cylinder / 32.617 cu in/cylinder / 32.617 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio9.0 : 1
SumpMax. output power74.6 kW / 100.0 hp / 100.0 hp at 4600 rpm / 4600 rpm / 4600 rpm
AspirationnaturalMax. torque172.0 N·m / 126.9 lb·ft / 126.9 lb·ft at 3350 rpm / 3350 rpm / 3350 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)38.9 kW / 52.2 hp / 52.2 hp (est.)
CoolantwaterSpecific output34.9 kW/l / 0.767 bhp/cu in / 0.767 bhp/cu in
Catalytic converternoSpecific torque80.5 N·m/l / 0.70 lb·ft/cu in / 0.70 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.7

Performance

Acceleration 0-50 mph (80 km/h)8.30 s / 8.30 s / 8.30 sTop (maximal) speed165 km/h / 103 mph / 103 mph
Acceleration 0-60 mph (97 km/h)10.90 s / 10.90 s / 10.90 sPower-to-weight ratio103.5 kW/ton / 78.4 bhp/ton / 78.4 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-lock2.5Turning circle10.4 m / 34.1 ft / 34.1 ft
Suspension frontIndependent, Coil springsSuspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres front5.50-15Tyres rear5.50-15
Brakes frontdiscBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Triumph TR-4

Infobox

Beyond basic auto insurance

In addition to having enough liability protection, there are some other coverages you should consider:

Collision: Pays for damage to your car resulting from a collision with another car, an object or as a result of flipping over. It also covers damage caused by potholes. Even if you are at fault for the accident, your collision coverage will reimburse you for the costs of repairing your car, minus the deductible. If you are not at fault, your insurance company may try to recover the amount they paid out from the other driver’s insurance company though a process called subrogation. If the company is successful, you will be reimbursed for the deductible.

Comprehensive: Reimburses you for loss due to theft or damage caused by something other than a collision with another car or object, such as fire, falling objects, missiles, explosion, earthquake, windstorm, hail, flood, vandalism, riot, or contact with animals such as birds or deer. Comprehensive insurance will also reimburse you if your windshield is cracked or shattered; some companies may waive the deductible on the glass portion of this coverage.

Uninsured and Underinsured Motorist Coverage: Reimburses you, a member of your family, or a designated driver if one of you is hit by an uninsured or hit-and-run driver. Underinsured motorist coverage comes into play when an at-fault driver has insufficient insurance to pay for your total loss. These coverages are required in 19 states, but available in all. It is important to purchase the same amount of coverage for uninsured/underinsured motorists as you have for liability to others.

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