23 TECHNICAL DATA
268
23.1 Engine
Design 2-cylinder 4-stroke Otto engine, 75° V arrangement,
water-cooled
Displacement 1,050 cm³ (64.08 cu in)
Stroke 63 mm (2.48 in)
Bore 103 mm (4.06 in)
Compression ratio 13.0:1
Idle speed 1,300 … 1,500 rpm
Control DOHC, 4 valves per cylinder, chain-driven
Valve - valve plate diameter
Intake 42 mm (1.65 in)
Exhaust 34 mm (1.34 in)
Valve clearance
Exhaust at: 20 °C (68 °F) 0.25 … 0.30 mm (0.0098 … 0.0118 in)
Intake at: 20 °C (68 °F) 0.10 … 0.15 mm (0.0039 … 0.0059 in)
Crankshaft bearing Sleeve bearing
Conrod bearing Sleeve bearing
Piston Forged light alloy
Piston ring 1 upper compression (rectangular) ring, 1 lower com-
pression ring, 1 oil scraper ring
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