Technical Data - Engine - KTM 450 SX-F Owner's Manual

TECHNICAL DATA - ENGINE

TECHNICAL DATA - ENGINE 12
Design
Displacement (450 SX-F, 450 XC-F)
Displacement (505 SX-F, 505 XC-F)
Stroke
Bore (450 SX-F, 450 XC-F)
Bore (505 SX-F, 505 XC-F)
Compression ratio
Idle speed
Control
Valve diameter, intake
Valve diameter, exhaust
Valve clearance, cold, intake
Valve clearance, cold, exhaust
Crankshaft bearing
Conrod bearing
Piston pin bearing (450 SX-F, 450 XC-F)
Piston pin bearing (505 SX-F, 505 XC-F)
Pistons
Piston rings
Engine lubrication
Primary transmission
Transmission ratio
Transmission ratio (450 SX-F, 505 SX-F)
1st gear
2nd gear
3rd gear
4th gear
Transmission ratio (450 XC-F, 505 XC-F)
1st gear
2nd gear
3rd gear
4th gear
5th gear
Generator performance
6000 rpm
Ignition
Spark plug
spark plug electrode gap
Cooling
Starting aid
1-cyliner 4-stroke engine, water-cooled
449.3 cm³ (27.42 cu in)
477.5 cm³ (29.14 cu in)
60.8 mm (2.39 in)
97 mm (3.82 in)
100 mm (3.94 in)
12,5:1
1600...1650 rpm
4 valves controlled by cam levers ad 2 camshafts, driven by
helical gear pair and tooth-wheel chain
40.4 mm (1.59 in)
31.7 mm (1.25 in)
0.07...0.13 mm (0...0.01 in)
0.12...0.18 mm (0...0.01 in)
2 cylinder roller bearing
Needle bearing
Bronze bush
not a bearing bush - DLC-plated piston pins
Forged light alloy
1 compression ring, 1 oil scraper ring
Pressure circulation lubrication with 3 rotor pumps
29:74
17:32
19:30
21:28
23:26
16:34
19:31
20:26
23:25
26:24
42 W
Contactless controlled fully electronic ignition with digital ignition
adjustment, type Kokusan
NGK CR 9 EKB
0.7 mm (0.03 in)
Water cooling, permanent circulation of coolant by water pump
Electric starter
71