Engine; Timing System - Ducati 749R Manuel D'utilisation Et Entretien

Engine

Twin cylinder, four-stroke, 90° "L" type, longitudinal.
Bore (mm):
94
Stroke (mm):
54
Total displacement cm 3 :
749
Compression ratio:
12.7±0.5:1
Max power at crankshaft (95/1/EC):
86.5 kW -117.6 HP at 10,250 rpm
Max torque at crankshaft (95/1/EC):
81.5 Nm at 8,250 rpm
Max rotation speed, rpm :
11.300
Important
Do not exceed the specified rpm limits in any running
conditions.

Timing system

Desmodromic (type) with four valves per cylinder,
operated by eight rocker arms (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. 81)
1) Opening (or upper) rocker;
2) Opening (upper) rocker shim;
3) Closing (lower) rocker shim;
4) Return spring for lower rocker;
5) Closing (lower) rocker;
6) Camshaft;
7) Valve.
6
1 2 3
7 5 4
fig. 81
83
E