22 Technical Data; Engine; Engine Tightening Torques - GAS GAS MC 450F 2021 Owner's Manual

22 TECHNICAL DATA

22.1
Design
Displacement
Stroke
Bore
Compression ratio
Idle speed
Control
Valve diameter, intake
Valve diameter, exhaust
Valve clearance
Intake at: 20 °C (68 °F)
Exhaust at: 20 °C (68 °F)
Crankshaft bearing
Conrod bearing
Piston pin bearing (MC)
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Gearbox
Transmission ratio
Alternator
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starting aid
22.2
Screw, oil jet for piston cooling
Crankshaft speed sensor screw and
cable retainer
Oil nozzle for clutch lubrication
Oil nozzle for timing chain lubrication
Oil nozzle, piston cooling
Oil nozzle, rocker arm lubrication
Screw, bearing retainer
120

Engine

Engine tightening torques

M4
M5
M5
M5
M5
M5
M5
1-cylinder 4-stroke engine, water-cooled
449.9 cm³ (27.455 cu in)
63.4 mm (2.496 in)
95 mm (3.74 in)
12.75:1
2,250 ... 2,350 rpm
OHC, 4 valves controlled via rocker arm
40 mm (1.57 in)
33 mm (1.3 in)
0.10 ... 0.15 mm (0.0039 ... 0.0059 in)
0.12 ... 0.17 mm (0.0047 ... 0.0067 in)
2 cylinder roller bearing
Slide bearing
No bearing bush – DLC coated piston pin
Forged light alloy
1 compression ring, 1 oil scraper ring
Pressure circulation lubrication with 2 trochoidal pumps
31:76
Multidisc clutch in oil bath, hydraulically activated
12 V, 70 W
Contactless controlled fully electronic ignition with digital
ignition adjustment
NGK LMAR9AI-8
0.8 mm (0.031 in)
Water cooling, permanent circulation of coolant by water
pump
Starter motor
2 Nm (1.5 lbf ft)
6 Nm (4.4 lbf ft)
2 Nm (1.5 lbf ft)
2 Nm (1.5 lbf ft)
2 Nm (1.5 lbf ft)
2 Nm (1.5 lbf ft)
6 Nm (4.4 lbf ft)
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™
Loctite ® 243™