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General information |
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Motorcycle name
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Honda C90 K3 |
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Year model
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1978 |
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Type
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Scooter |
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Rating
|
3.9 View the detailed rating of value for money, design and look, reliability, etc. Compare with any other bike. |
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Engine and transmission |
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Engine size
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89.0 ccm (5.43 cubic inches) |
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Type of engine
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Single cylinder, four-stroke |
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Effect
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7.5 HP (5.5 kW)) @ 9500 RPM |
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Torque
|
6.0 Nm (0.6 kgf-m or 4.4 ft.lbs) @ 6000 RPM |
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Top speed
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80.0 km/h (49.7 mph) |
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Maximum RPM
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10000 |
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Compression
|
8.2:1 |
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Bore x stroke
|
50.0 x 45.6 mm (2.0 x 1.8 inches) |
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Valves per cylinder
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2 |
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Fuel system
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Carburettor. Keihin seiki |
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Fuel control
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Overhead Cams (OHC) |
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Ignition
|
contact breaker points |
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Lubrication system
|
Wet sump |
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Cooling system
|
Air |
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Gearbox
|
3-speed |
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Transmission type
|
Chain (final drive) |
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Clutch
|
Multi plate wet automatic |
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Fuel consumption
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2.50 litres/100 km (40.0 km/l or 94.09 mpg) |
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Greenhouse gases
|
58.0 CO2 g/km. (CO2 - Carbon dioxide emission) |
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Exhaust system
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Sinle stainless steel pipe |
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Chassis, suspension, brakes and wheels |
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Frame type
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Pressed steel monoque with engine part of loadbearing |
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Rake (fork angle)
|
27.0° |
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Trail
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75 mm (3.0 inches) |
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Front suspension
|
Hydraulically dampened leading link forks |
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Front wheel travel
|
75 mm (3.0 inches) |
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Rear suspension
|
Hydraulically dampened with compression spring |
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Rear wheel travel
|
100 mm (3.9 inches) |
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Front tire
|
2.00-17 |
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Rear tire
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3.00-17 |
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Front brakes
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Expanding brake (drum brake). Twin expanding shoe |
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Diameter
|
110 mm (4.3 inches) |
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Rear brakes
|
Expanding brake (drum brake). Twin expanding shoe |
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Diameter
|
110 mm (4.3 inches) |
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Physical measures and capacities |
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Dry weight
|
85.0 kg (187.4 pounds) |
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Weight incl. oil, gas, etc
|
91.6 kg (201.9 pounds) |
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Power/weight ratio
|
0.0882 HP/kg |
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Front percentage of weight
|
40.0 |
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Rear percentage of weight
|
60.0 |
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Seat height
|
790 mm (31.1 inches) If adjustable, lowest setting. |
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Overall height
|
995 mm (39.2 inches) |
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Overall length
|
1830 mm (72.0 inches) |
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Overall width
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640 mm (25.2 inches) |
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Ground clearance
|
130 mm (5.1 inches) |
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Wheelbase
|
1190 mm (46.9 inches) |
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Fuel capacity
|
5.50 litres (1.45 US gallons) |
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Reserve fuel capacity
|
1.00 litres (0.26 US gallons) |
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Other specifications |
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Color options
|
BRIGHT RED. METALLIC SAVANNAH GREEN. METALLIC STRATO BLUE. METALLIC DARK GREY |
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Starter
|
Kick |
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Comments
|
During 1978 Honda was already legendary for their step thru scooter bikes. The performance they achieved through technical advancements from their small overhead camshaft motors was incredible. Similar models are still available today. |
| Update specs | Report missing specs or required updates. |
|
Further information |
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| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Ask questions | Join the 78 Honda C90 K3 discussion group or the general Honda discussion group. |
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(72.8 out of 100)