Technical Specifications - Engine - KTM Super Duke 990s Owner's Manual

TECHNICAL SPECIFICATIONS – ENGINE
ENGINE
Design
Displacement
Bore / Stroke
Compression ratio
Fuel
Valve timing
Valve diameter
Valve clearance, cold
Crankcase bearing
Conrod bearing
Piston pin bearing
Piston
Piston rings
Engine lubrication
Engine oil
Quantity of engine oil
Primary drive
Clutch
48
Transmission
Gear ratio
Ignition system
Ignition timing
Generator
Spark plug
Electrode distance
Cooling system
Cooling liquid
Starting aid
#
JASO T903 MA
TEMPERATURE
5W/40
990 LC8
Liquid-cooled, 2-cylinder 4-stroke engine with 75° V arrangement with balancer shaft and electric starter
999 cm 3
101/62,4 mm
11,5:1
unleaded fuel with at least RON 95 (USA: Premium RON 91) *
4 valves controlled over bucket tappet and 2 camshafts, camshaft drive with gears/chain
Intake: 38 mm Exhaust: 33 mm
Intake: 0,10 - 0,15 mm
Friction bearings (2 main bearings / 1 supporting bearing)
Friction bearing
Dual-fuel bearing
Light alloy – forged
1 compression ring, 1 taper face ring, 1 single-piece oil scraper ring with spiral-type expander
Dry sump with 2 trochoidal pumps (pressure pump and suction pump)
SAE 5W/40, 10W/50 (Motorex Power Synt 4T) #
approx. 3.1 liters during oil/filter change
Straight-toothed spur wheels 35 : 67
Multi-disc clutch in oil bath
6-speed claw shifted
1 st gear 14:36
2 nd gear 16:30
3 rd gear 20:30
4 th gear 21:27
5 th gear 23:26
6 th gear 25:26
breakerless transistorized electronic ignition system with digital ignition advance
Map-controlled via TPS
12V 450W bei 6000 U/min
NGK DCPR 8 E
0,8 mm
liquid cooled, permanent circulation of cooling liquid through water pump
2.1 liters, 50% antifreeze, 50% water, at least –25° C
electric starter
0°C
32°F
10W/50
»
Exhaust: 0,25 - 0,30 mm
*
PON / CLC RON / ROZ
87 91
91 Premium 95
RON = Pump Octane Number
CLC = Cost of Living Council
RON = Research Octane Number
ROZ = Research Oktan Zahl
MON = Motor Octane Number
MON
83
87