Honda CB650SC Nighthawk (1984-85)

The Honda CB 650SC Nighthawk was produced between 1984-85 and had a four stroke, transverse four-cylinder, DOHC, 2 valves per cylinder engine, which had a capacity of 655cc. The maximum power generated by the engine was 72hp at 10,000rpm and the maximum torque was wet plate. The bike had a 6-speed transmission and the final drive was a shaft. It had a Showa air-spring, 39mm stanchion tube diameter and brake-actuated hydraulic anti-dive front suspension, and a dual Showa shock rear suspension, which was 5-way adjustable for spring preload, and 4-way adjustable for rebound damping. The front brakes consisted of 2 275mm discs, and had 2-piston calipers, while the rear brakes were a 180mm drum. The seat height was 780mm, and the wheelbase was 1457mm, it weighed 205kg dry, and the fuel capacity was 13.5 litres. The average consumption was 50.4mpg, and the top speed was 122mph.

---

Technical specifications:

Make Model: Honda CB 650SC Nighthawk

Year: 1984 – 85

Engine: Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.

Capacity: 655 cc / 39.9 cu-in

Bore x Stroke: 60 x 58 mm

Cooling System: Air/oil cooled

Compression Ratio: 9.5:1

Induction: 4x Keihin 29mm carburetors

Ignition: Transistorized

Starting: Electric

Max Power: 72 hp / 54 kW @ 10000 rpm

Max Power Rear Tyre: 62 hp @ 8500 rpm

Max Torque: Wet plate

Transmission: 6 Speed

Final Drive: Shaft

Front Suspension: Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive

Rear Suspension: Dual Showa shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping

Front Brakes: 2x 275mm discs 2 piston calipers

Rear Brakes: 180mm Drum

Front Tyre: 100/90 -19

Rear Tyre: 130/90 -16

Seat Height: 780 mm / 30.7 in

Wheelbase: 1457 mm / 57.8 in

Dry Weight: 205 kg / 451 lbs

Wet Weight: 223 kg / 491.6 lbs

Fuel Capacity: 13.5 Litres / 3.4 US gal

Consumption Average: 50.4 mpg

Standing 1/4 Mile: 13.29 sec / 157.7 km/h

Top Speed: 122 mph / 196 km/h