Technical specifications
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| Model: |
G12 (all models) |
| Years: |
1958-66 |
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Engine:
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Twin cylinder
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Capacity:
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646 cc / 39.4 cub in.
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Bore x Stroke:
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72 x 79.3 mm
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Cooling System:
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Air cooled
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Compression Ratio:
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G12/de Luxe: 7.5:1 CS/CSR: 8.5:1
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Lubrication:
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Dry sump
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Engine Oil:
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Hot: SAE 50 Cold: SAE 30 Extremely cold: SAE 20
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Oil Capacity:
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2.5 L / 5.3 US pints
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Exhaust:
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Twin, chrome
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Fuel System:
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Amal 389, 1-1/8
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Ignition:
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Lucas K2F
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Starting:
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Kick
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Battery:
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Lucas 6V, 12Ah
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Spark Plug:
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G12/de Luxe/CS: KLG FE80, 14 mm thread, ¾ in. reach CSR: KLG FE220, 14 mm thread, ¾ in. reach
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Transmission:
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4-Speed
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Final Drive:
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Chain, 97 links
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Internal Gear Ratios:
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1st 2.56 / 2nd 1.70 / 3rd 1.22 / 4th 1.00:1
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Maximum Power:
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26 kW / 35 hp @ 6500 rpm
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Frame:
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Double cradle
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Front Suspension:
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AMC teledraulic fork
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Rear Suspension:
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Swingarm with twin shocks, Girling
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Front Brakes:
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Drum, 7in. sls
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Rear Brakes:
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Drum, 7in. sls
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Wheels:
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Steel, wire spokes
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Front Tyre:
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3.25 x 19 in.
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Rear Tyre:
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3.50 x 19 in.
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Dry Weight:
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180 kg / 396 lbs
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Fuel Capacity:
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17 L / 4.5 US gal
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Average Consumption:
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4.3 L/100 km / 23.4 km/l / 55 US mpg
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Top Speed:
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153 km/h / 95 mph
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