Ducati 998S User Manual

60
E
Engine
Twin cylinder, four-stroke, 90° “L” type, longitudinal.
Bore mm:
100
Stroke mm:
63,5
Total displacement c.c.:
998
Compression ratio:
1:11.4±0.5
Max. power at crankshaft (95/1/CE) kW/HP:
100/136 at 10,200 rpm
Max torque at crankshaft (95/1/CE):
10.3 Kgm at 8,000 rpm
Max. rotation speed
10,500 rpm.
Important
Do not exceed specified rotation speed limits under
any running condition.
Timing system
Desmodromic (type) with four valves per cylinder,
operated by eight rockers (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.
5
3
6
1
2
4
7
Desmodromic timing system (fig. 44)
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.
fig. 44

Ducati 998S Specifications

General

Displacement	998 cc
Bore x Stroke	100 mm x 63.5 mm
Compression Ratio	11.4:1
Transmission	6-speed
Frame	Tubular steel trellis
Front Brakes	2 x 320 mm discs, 4-piston calipers
Tire Front	120/70 ZR17
Tire Rear	190/50 ZR17
Engine Type	Liquid-cooled, 4-stroke, L-twin, Desmodromic DOHC, 4 valves per cylinder
Torque	97 Nm @ 8000 rpm
Fuel System	Electronic fuel injection
Front Suspension	Showa 43mm upside-down fork, fully adjustable
Rear Suspension	Showa monoshock, fully adjustable
Rear Brakes	220 mm disc, 2-piston caliper
Fuel Capacity	17 liters