74
E
Engine
Longitudinal 90° “L” twin cylinder, four-stroke.
Bore (mm):
100.
Stroke (mm):
63,5.
Total displacement cm
3
:
998.
Compression ratio:
11,4±0,5:1.
Max power at crankshaft (95/1/EC):
88.8 kW - 119 HP at 9,250 rpm.
Max torque at crankshaft (95/1/EC):
96,9 Nm (9.9 kgm) at 7,500 rpm.
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.
Driven by the crankshaft through spur gears, timing belt
pulleys and toothed timing belts.
Desmodromic timing system
(fig. 67)
1) Opening (or upper) rocker arm;
2) opening shim;
3) closing (or lower) shim;
4) return spring for closing rocker;
5) closing (or lower) rocker arm;
6) camshaft;
7) valve.
6
1
2
3
5
4
7
fig. 67