Categories: Kawasaki

Kawasaki Z650 (1978)

The Kawasaki Z 650 is a motorcycle that was produced in 1978. It comes equipped with a four-stroke, transverse four-cylinder, DOHC engine that provides a displacement of 652cc. The bike features 2 valves per cylinder, air cooling, and a compression ratio of 9.5:1. The dry sump lubrication system can hold up to 7.4 US pints of oil, and the four 28mm Mikuni carburetors work in tandem to provide smooth and consistent fuel delivery to the engine. The Z 650 features both an electric and kick-start system and can reach a maximum power output of 66 hp at 8500 rpm and maximum torque of 5.8 kgf-m at 7000 rpm. The transmission has five speeds and is linked to a final chain drive system. The bike comes with a steel twin-loop cradle frame and a telescopic hydraulic fork front suspension and swinging fork rear suspension. The single 275mm disc with a 1 piston caliper makes up the front brake, while a 180mm drum is present at the rear. The bike’s wheelbase measures 1437 mm, ground clearance is 152 mm, and it has a dry weight of 211 kg. The Z 650 features a 16.5-liter fuel tank capacity, a consumption average of 16.8 km/lit, and can achieve a top speed of 186 km/h or 155.5 mph while standing 1/4 mile in 13.8 seconds.


Technical specifications:

Make Model: Kawasaki Z 650

Year: 1978

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

Capacity: 652 cc / 39.7 in



Bore x Stroke: 62 54 mm

Cooling System: Air cooled

Compression Ratio: 9.5:1

Lubrication: Dry sump

Oil Capacity: 7.4 US pint

Induction: 4x 28mm Mikuni carburetors

Ignition: Battery & coil

Battery: 12V-10AH

Starting: Electric & kick

Max Power: 66 hp / 48.2 kW @ 8500 rpm

Max Torque: 5.8 kgf-m / 57 Nm @ 7000 rpm

Clutch: Wet, multi-plate

Transmission: 5 Speed


Final Drive: Chain

Gear Ratio: 1st 15.63:1 2nd 10.93:1 3rd 8.52:1 4th 6.97:1 5th 5.97:1

Frame: Steel twin loop cradle

Front Suspension: Telescopic hydraulic fork

Rear Suspension: Swinging fork

Front Brakes: Single 275mm disc 1 piston caliper

Rear Brakes: 180mm Drum

Front Tyre: 3.25-19

Rear Tyre: 4.00-18

Rake: 27 o


Trail: 106 mm / 4.2 in

Wheelbase: 1437 mm / 56.6 in

Seat Height: 800 mm / 31.5 in

Ground Clearance: 152 mm / 6.0 in

Dry Weight: 211 kg / 465 lbs

Wet Weight: 220 kg / 485 lbs

Fuel Capacity: 16.5 Litres / 4.3 US gal

Consumption Average: 16.8 km/lit

Standing 1/4 Mile: 13.8 sec

Top Speed: 186 km/h / 155.5 mph

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