Triumph Thunderbird Handbook page 106

Specifications
Engine
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement. . . . . . . . . . . . . . . . . . . . . . . . . .
Bore x Stroke . . . . . . . . . . . . . . . . . . . . . . . . .
Compression Ratio . . . . . . . . . . . . . . . . . . . . .
Cylinder Sequence . . . . . . . . . . . . . . . . . . . . .
Firing Order . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance
Maximum Power (DIN) . . . . . . . . . . . . . . . . .
Maximum Torque . . . . . . . . . . . . . . . . . . . . . .
Lubrication
Lubrication System . . . . . . . . . . . . . . . . . . . . .
Engine Oil Capacities
dry fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
oil/filter change . . . . . . . . . . . . . . . . . . . . .
oil change only . . . . . . . . . . . . . . . . . . . . .
106
Liquid cooled parallel twin, 270° firing angle
97.4 cu in (1596 cc)
4.08 x 3.71 in (103.8 x 94.3 mm)
9.7:1
Left to right
1-2
84.8 hp at 4,850 rpm (86 PS at 4,850 rpm)
107.7 lb ft at 2,750 rpm (146. 1 Nm at
2,750 rpm)
Wet sump
1.58 US gal (6.0 litres)
1. 1 1 US gal (4.2 litres)
1.05 US gal (4.0 litres)