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TECHNICAL DATA – ENGINE 660 RALLYE Customer Bike 2001
Type 660 LC4
Design Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
Displacement 653,7 cm
3
Bore / Stroke 102 / 80 mm
Ratio 11,6 : 1
Fuel unleaded premium gasoline with a least RON 95
Valve timing 4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
Camshaft MSP3/1
Valve diameter Intake: 36 mm Exhaust: 32 mm
Valve clearence cold Intake: 0.10 mm Exhaust: 0.10 mm
Crank shaft bearing 2 cylinder roller bearing
Connecting rod bearing needle bearing
Top end bearing bronze bushing
Piston forged aluminium alloy
Piston rings 1 compression ring, 1 taper face ring, 1 oil scraper ring
Engine lubrication 2 Eaton-Oilpumps
Quantity of engine oil see table #
Engine oil 2,2 liters including frame
Primary ratio straight geared spur wheels 31 : 79 teeth
Clutch multi disc clutch in oil bath
Transmission 5-speed claw shifted
Ignition system contactless DC- CDI ignition with digital advanced system type KOKUSAN
Ignition timing adjustment to max. 33° BTDC at 85000 rpm
Generator 12V 200W
Spark plug NGK DR9 EA
Spark plug gap 0.9 mm
Cooling system liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
Cooling liquid 1,8 liter, 40% antifreeze, 60% water, at least –25° C (–13° F)
Starting equipment electric starter
29
Hexagon nut at primary gear M20x1.5 Loctite 243 + 220 Nm (162 ft.lb)
Collar nut flywheel M16x1.25 LH thread 80° C + 150 Nm (132 ft.lb)
Hexagon nut for inner clutch hub M18x1.5 80 Nm (60 ft.lb)
Hexagonscrew oil pump M6 Loctite 243 + 8 Nm (6 ft.lb)
Allan head screws freewheel hub M6x12/M6x12.5 Loctite 648 + 18 Nm (13 ft.lb)
Hexagon screw camshaft gear M10 Loctite 243 + 35 Nm (26 ft.lb)
Allan head screw cylinder head top sect. M6x25/M6x65/M6x70 (8.8) 8 Nm (6 ft.lb)
Allan head screw cylinder head top sect. M6x50/M6x55 (12.9) 20 Nm (15 ft.lb)
Cylinder head screws M10 60 Nm (44 ft.lb)
Collar nuts at cylinder base M10 50 Nm (35 ft.lb)
Hexagon screw chain sprocket M10 Loctite 243 + 40 Nm (30 ft.lb)
Oil drain plug M22x1.5 30 Nm (22 ft.lb)
Magnetic plug M12x1.5 20 Nm (15 ft.lb)
Plug bypass valve, kickstarter M12x1.5 20 Nm (15 ft.lb)
Hollow screws oil lines M8x1 10 Nm (7.4 ft.lb)
Hollow screws oil lines M10x1 15 Nm (11 ft.lb)
Jet screw clutch cover M8 10 Nm (7,4 ft.lb)
Screw plug timing-chain tensioner M12x1.5 20 Nm (15 ft.lb)
Counternuts valve adjusting screws M7x0.75 20 Nm (15 ft.lb)
Crankshaft locking bolt M8 25 Nm (19 ft.lb)
Engine mounting bolt M8 40 Nm (30 ft.lb)
Engine mounting bolt M10 70 Nm (50 ft.lb)
TIGHTENING TORQUES - ENGINE