Triumph Tr3 (1955-56)

The Car

Coming soon

The Specs

Below are the technical specifications and any performance numbers we could get.


Bore & Stroke 83mm x 92mm
Displacement 1991cc
Firing order 1,3,4,2
Oil pressure (hot)
70 lb./sq. in. at 70°C (158°F) at 2000 rpm

Fuel Supply

Carburetor SU Type H6 (twin)
Needles TE


Intake tappet clearance 0.010″ (cold); (high-speed motoring: 0.013″)
Exhaust tappet clearance 0.012″ (cold); (high-speed motoring: 0.013″)
Valve-timing indication Marks on timing gears
Intake valve opens Intake and exhaust valves equally open at TDC exhaust stroke with 0.015″ rocker clearance


Breaker gap 0.015″
Plug gap 0.032″
Ignition timing indication Pulley and pointer
Ignition timing 4° BTDC


Clutch type Single Dry Plate
Clutch linings Moulded


Brake type Lockheed Hydraulic
Brake linings Mintex M20

Wheel Alignment

Toe-Out Nil to 18
Caster angle
King pin angle