Engine
1
Longitudinal 90º "L" twin cylinder, four-stroke.
Bore, mm: 88
Stroke, mm: 57.2
:
Total displacement cu. cm
696
Compression ratio: 10.7±0.5:1
Max power at crankshaft (95/1/EC):
5
2
58.8 kW - 80 HP at 9,000 rpm
7
8
3
Max torque at crankshaft (95/1/EC):
69 Nm - 7 Kgm at 7,750 rpm.
4
Timing system
6
DESMODROMIC with two valves per cylinder,
Fig. 117
operated by four rocker arms (two opening rockers
and two closing rockers) and one overhead camshaft.
It is operated by the crankshaft through spur gears,
belt rollers and toothed belts.
Desmodromic timing system
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.
156