BSA A65 Firebird Scrambler (1968-71)

Make Model: BSA A65 Firebird Scrambler and Firebird SS


Year: 1968 – 71
Engine: Four stroke, parallel twin, OHV
Capacity: 654 cc / 39.9 cub in.
Bore x Stroke: 75 x 74 mm
Carburetors: Twin Amal monobloc 389/67
Cooling System: Air cooled
Compression Ratio: 9.0:1
Lubrication: Dry sump
Engine Oil: SAE 20W50
Oil Capacity: 3.4 L / 6 pints / 0.9 US gal
Exhaust: Twin, high level, chrome
Ignition: Twin coil, Lucas 4CA
Spark Plug: Champion N4
Battery: 2 x 12V, 10 a.h., Lucas RM19
Starting: Kick start
Max Power: 1968: 27.9 kW / 38 hp @ 5800 rpm 1970: 35.9 kW / 49 hp @ 7000 rpm
Clutch: Multi-plate, wet
Transmission: 4 Speed
Final Drive: Chain
Gear Ratio: 1st 11.10 / 2nd 7.18 / 3rd 5.13 / 4th 4.35:1
Frame: Steel tubing, cradle

Front Suspension: Telescopic forks with coil spring – hydraulically damped
Rear Suspension: Swing arm, coil springs/hydraulically damped
Front Brakes: 20.32 cm / 8 in., drum, SLS
Rear Brakes: 17.78 cm / 7In., drum, SLS
Wheels: Steel, wire spokes
Front Rim: WM2-18
Rear Rim: WM2-18
Front Tyre: 3.25 x 18 in.
Rear Tyre: 1968: 3.50 x 18 in. 1970: 4.00 x 18 in
Dimensions: Length: 2060 mm / 81.0 in. Width: 711 mm / 28 in.
Wheelbase: 1372 mm / 54 in.
Ground Clearance: 178 mm / 7.0 in.
Seat Height: 838 mm / 33 in.
Wet Weight: 184 kg / 406 lbs
Fuel Capacity: Europe:18 L / 4.8 US gal US: 9 L / 2.4 US gal
Top Speed: 169 km/h / 105 mph


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