Timing system
Double overhead camshaft (DOHC) driven by chain
and gearwheels, 4 valves per cylinder, desmodromic
system.
Desmodromic timing system
1) Opening (or upper) rocker arm;
2) Opening rocker shim;
3) Closing (or lower) rocker shim;
4) Return spring for lower rocker;
5) Closing (or lower) rocker;
6) Camshaft;
7) Valve.
6
2
1
2
5
2
1
3
5
4
7
Fig. 155
255