Triumph TR3 1955-57 with disc wheels
See specifications below illustration. To TR2-8 page
Page 091A
Triumph TR3 1955-57 specifications
4 Cylinder in line
Bore: 83mm, Stroke: 92mm
Displacement: 1,991cc
Piston area: 2.98
Valves: overhead
Compression ratio: 8.5 to 1
Carburettors: twin SU
Power output: 100bhp at 5,000rpm

Maximum speed: 102mph
Acceleration: 0-60 mph 10.8secs
Overall fuel consumption: approx. 30mpg

Steel body on pressed steel chassis

Clutch: Borg & Beck
Gearbox: 4-speed
Ratios: Top 3.7, 3rd 4.9, 2nd 7.4,
1st 12.5, reverse 15.8 to 1
Propellar Shaft: Hardy Spicer open
Final drive: hypoid bevel

Drums front and rear up to 1956 (first 4,408 built), front- Girling hydraulic discs later

worm & peg

Front: Independent coil,
telescopic shock absorbers
Rear: semi-elliptic, leaf spring,
piston type shock absorbers

15in pressed steel disc or optionalnock-on wire wheels with 15in x 155 Goodyear radial tyres

Dimensions & Weight
Wheelbase: 7ft 4in
Track - front: 3ft 9in
Track - rear: 3ft 91/2in
Overall length: 12ft 7in
Overall width: 4ft 71/2in
Overall height(with hood up): 4ft 2in
Ground clearance: 6in
Turning circle: Left 34ft
Unladen weight: 1,990 lbs

TR3 1955-57 13,378
TR3A 1958-62 58,236
TR3B (1963 for USA only) 3,331