2002 Ducati Superbike 998 Owners Manual - Page 132

E 998 Engine Twin cylinder, four-stroke, 90° "L" type, longitudinal. Bore mm: 100 Stroke mm: 63.5 Total displacement cu.cm.: 998 Compression ratio: 1:11.4±0.5 Max. power at crankshaft (95/1/CE): 100 kW - 136 HP at 10200 rpm Max torque at crankshaft (95/1/CE): 10.3 Kgm at 8000 rpm Max. rotation speed: 11500 rpm Important Do not exceed specified rotation speed limits under any running condition. Desmodromic timing system (fig. 45) 1) Opening (or upper) rocker. 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. 998 6 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. 60 2 1 5 3 7 fig. 45 4