TECHNICAL DATA - ENGINE 189
Design 2-cylinder 4-stroke Otto motor, 75° V arrangement, water-cooled
Displacement 999 cm³ (60.96 cu in)
Stroke 62.4 mm (2.457 in)
Bore 101 mm (3.98 in)
Compression ratio 11.5:1
Control DOHC, 4 valves per cylinder, chain-driven
Valve - diameter
Exhaust 33 mm (1.3 in)
Intake 38 mm (1.5 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 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Engine lubrication Dry sump lubrication system with two rotor pumps
Primary transmission 35:67
Clutch Multidisc clutch in oil bath/hydraulically activated
Transmission 6-gears, claw-shifted
Transmission ratio
1st gear 12:35
2nd gear 15:32
3rd gear 18:30
4th gear 20:27
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