Honda CB650SC

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1983-Honda-CB650SC-Maroon-1.jpg
Honda CB650
Manufacturer
Honda
Also called Nighthawk
Production 1982 - 1985
Engine
Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.
Compression ratio 9.5:1
Top Speed 122 mph / 196 km/h
Ignition Transistorized
Spark Plug NGK DR8ESL '82
NGK DPR8EA-9 '83-85
Battery YUASA YB12A-A '82
YUASA YB12AL-A '83-85
Transmission 5 Speed
Suspension Front: Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive
Rear: Dual Showa shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping
Brakes Front: 2x 275mm discs 2 piston calipers
Rear: 180mm Drum
Front Tire 100/90 -19
Rear Tire 130/90 -16
Wheelbase 1457 mm / 57.8 in
Seat Height 780 mm / 30.7 in
Weight 205 kg / 451 lbs (dry), 223 kg / 491.6 lbs (wet)
Oil Filter K&N KN-401
Fuel Capacity 13.5 Liters / 3.4 US gal
Manuals Service Manual

Brochures · Reviews ·


The Honda CB650SC is a motorcycle produced by Honda from 1982 to 1985, more commonly known as the Nighthawk 650. It could reach a top speed of 122 mph / 196 km/h.

Engine

The engine was a Air/oil cooled cooled Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.. The engine featured a 9.5:1 compression ratio.

Chassis

It came with a 100/90 -19 front tire and a 130/90 -16 rear tire. Stopping was achieved via 2x 275mm discs 2 piston calipers in the front and a 180mm Drum in the rear. The front suspension was a Showa air-spring, 39mm stanchion tube diameter, brake-actuated hydraulic anti-dive while the rear was equipped with a Dual Showa shocks, 5-way adjustable spring preload, 4-way adjustable rebound damping. The CB650SC Nighthawk was fitted with a 13.5 Liters / 3.4 US gal fuel tank. The bike weighed just 205 kg / 451 lbs. The wheelbase was 1457 mm / 57.8 in long.



1982


The CB650SC'82 Nighthawk 650 was sold in 1982 in Candy Flair Blue or Cosmo Black Metallic. The headlight and instruments were round. The frame color was the basic color (blue or black). The stripe was chrome. The exhaust was a 4-into-4. The clutch was cable operated. The valve adjusters were screen-type. The drive train was chain driven. The engine was a 627cc SOHC 2-valve inline four cylinder linked to a 5-speed transmission. The serial number began JH2RC080*CM000013.

1983


The CB650SC'83 Nighthawk 650 was sold in 1983 in one of two colors: Pearl Siren Blue or Candy Wineberry Red. The headlight and instruments were rectangular. The exhaust system was a 4-into-2. The forks had the "TRAC" anti-dive system. The emblem was located above the axle. The speedometer numbers were marked in increments of 10 (i.e, 10, 20, 30, 40, etc.). The engine used hydraulic valve adjusters and clutch.

  • Engine: Completely new 655cc, DOHC inline four-cylinder
  • Power: 72 horsepower
  • Valve train: Hydraulic Valve Adjuster system
  • Transmission: 6-speed
  • Drive: Shaft
  • Clutch: Self-adjusting Hydraulic
  • Brakes: Dual front disc brakes with twin piston calipers
  • Oil: Oil cooler
  • Wheelbase: 1460mm (57.5 in)
  • Seat height: 777 mm(31.1 in.)
  • Fuel capacity: 13 liters (3.4 gal.)
  • Weight: 197 kg (434.3 lb)
  • The serial number began JH2RC130*DM000034

1984


The CB650SC'84 Nighthawk 650 was sold in 1984 in one of two colors: Black or Candy Bourgogne Red. The "TRAC" fork emblem was located below the axle.

  • Engine: 655cc
  • Valves: 16-valve hydraulic valve adjuster system
  • Power: 72 hp
  • Drive: Shaft
  • Transmission: Five-speed plus overdrive sixth
  • Wheelbase: 1460mm (57.5 in)
  • Seat height: 790 mm(31.1 in.)
  • Weight: 197 kg (434.2 lb)
  • The serial number began JH2RC130*EM100001

1985

1985 Honda Nighthawk 650


The CB650SC'85 was sold in 1985 in one of two colors: Candy Scorpio Red or Candy Empire Blue. The "NIGHTHAWK 650" side cover logo was in block letters. The speedometer numbers were in increments of 10 (i.e., 15, 25, 35, 45, etc.). The serial number begins JH2RC130*FM200001


Photos

Honda CB650 Honda CB650 Honda CB650 Honda CB650 Honda CB650


Specifications

Make Model Honda CB 650SC Nighthawk
Year 1982 - 83
Engine Type Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder.
Displacement 655 cc / 39.9 cu-in
Bore X Stroke 60 x 58 mm
Cooling System Air/oil cooled
Compression 9.5:1
Induction 4x Keihin 29mm carburetors
Ignition Transistorized
Starting Electric
Max Power 72 hp / 54 kW @ 10000 rpm
Max Power Rear Tire 62 hp @ 8500 rpm
Max Torque Wet plate
Transmission 5 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 Tire 100/90 -19
Rear Tire 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 Liters / 3.4 US gal
Consumption Average 50.4 mpg
Standing ¼ Mile 13.29 sec / 157.7 km/h
Top Speed 122 mph / 196 km/h