Engine; Timing System - Ducati SUPERSPORT800 Owner's Manual

Engine

Twin cylinder, four-stroke, 90° "L" type, longitudinal.
Bore:
88 mm SS800);
99 (SS1000).
Stroke:
66 mm (SS800);
71,5 (SS1000).
Total displacement:
802 cu. cm (SS800);
992cu. cm (SS1000).
Compression ratio:
10.3±0.5:1 (SS800)
10.0±0.5:1 (SS1000).
Max. power at crankshaft (95/1/EC):
54.8 kW – 74.5 HP at 8250 rpm (SS800);
63 kW – 85.5 HP at 7750 rpm (SS1000).
Max torque at crankshaft (95/1/EC):
70 Nm-7.1 Kgm at 6250 rpm (SS800);
87.5 Nm-9.0 Kgm at 5750 rpm (SS1000).
Important
Do not exceed specified rotation speed limits under
any running condition.

Timing system

Desmodromic (type) with two valves per cylinder,
operated by four rocker arms (2 opening rockers and 2
closing rocker arms) and an overhead camshaft. It is
operated by the crankshaft through spur gears, belt
rollers and toothed belts.
Desmodromic timing system (fig. 71)
1) Opening (or upper) rocker arm.
2) Opening rocker arm shim.
3) Split rings.
4) Closing (or lower) rocker arm shim.
5) Return spring for lower rocker arm.
6) Closing (or lower) rocker arm.
7) Camshaft.
8) Valve.
1
2
3
4
6
5
7
8
fig. 67
E
69