Engine; Timing System - Ducati 748 2000 Owner's Manual

Engine

Twin cylinder, four-stroke, 90° "L" type, longitudinal.
Bore mm:
88 (748/748S); 98 (996).
Stroke mm:
61.5 (748/748S); 66 (996).
Total displacement c.c.:
748 (748/748S); 996 (996).
Compression ratio:
1:11.5±0.5
Max. power at crankshaft (95/1/CE):
72 kW - 97HP at 11000 rpm (748/748S).
82.3 kW - 112HP at 8500 rpm (996).
Max torque at crankshaft (95/1/CE):
74 Nm at 9000 rpm (748/748S).
93 Nm at 8000 rpm (996).
Max. rotation speed
11500 rpm (748/748S).
10000 rpm (996).
Important
Do not exceed specified rotation speed limits
under any running condition.
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Timing system

Desmodromic (type) with four valves per cylinder,
operated by eight rockers (4 opening rockers and 4
closing rockers) and two overhead camshafts. It is
operated by the crankshaft through spur gears, belt
rollers and toothed belts.
Desmodromic timing system (fig. 44)
1) Opening (or upper) rocker.
2) Opening rocker shim.
3) Split rings.
4) Closing (or lower) rocker shim.
5) Return spring for lower rocker.
6) Closing (or lower) rocker.
7) Camshaft.
8) Valve.
1
7
6
4
3
8
2
1
6
5
fig. 44
E
59