Honda C90 K3 1978
Complete specifications and details for the 1978 Honda C90 K3. This comprehensive guide includes engine specifications, dimensions, features, and performance data.
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Basic Information
| Make | Honda |
|---|---|
| Model | C90 K3 |
| Year | 1978 |
| Category | Scooter |
Chassis, Suspension & Brakes
| Frame Type | pressed steel monoque with engine part of loadbearing |
|---|---|
| Front Brakes | Expanding brake (drum brake). twin expanding shoe |
| Front Brakes Diameter | 110 mm (4.3 inches) |
| Front Suspension | hydraulically dampened leading link forks |
| Front Wheel Travel | 75 mm (3.0 inches) |
| Rake | 27.0° |
| Rear Brakes | Expanding brake (drum brake). twin expanding shoe |
| Rear Brakes Diameter | 110 mm (4.3 inches) |
| Rear Suspension | hydraulically dampened with compression spring |
| Rear Wheel Travel | 100 mm (3.9 inches) |
| Trail | 75 mm (3.0 inches) |
Other Specifications
| Color Options | BRIGHT RED. METALLIC SAVANNAH GREEN. METALLIC STRATO BLUE. METALLIC DARK GREY |
|---|---|
| Comments | DURING 1978 HONDA WAS ALREADY LEGENDARY FOR THEIR STEP THRU SCOOTER BIKES. THE PERFORMANCE THEY ACHIEVED THROUGH TECHNICAL ADVANCMENTS FROM THEIR SMALL OVERHEAD CAMSHAFT MOTORS WAS INCREDIBLE. SIMILIAR MODELS ARE STILL AVALIABLE TODAY |
| Starter | Kick |
Engine & Transmission
| Displacement | 89.00 ccm (5.43 cubic inches) |
|---|---|
| Engine Details | Single cylinder, four-stroke |
| Power | 7.50 HP (5.5 kW)) @ 9500 RPM |
| Torque | 0.67 Nm (0.1 kgf-m or 0.5 ft.lbs) @ 6000 RPM |
| Top Speed | 80.0 km/h (49.7 mph) |
| Max Rpm | 10000 |
| Compression | 8.2:1 |
| Bore X Stroke | 50.0 x 45.6 mm (2.0 x 1.8 inches) |
| Valves Per Cylinder | 2 |
| Fuel System | Carburettor. keihin seiki |
| Ignition | contact breaker points |
| Lubrication System | Wet sump |
| Cooling System | Air |
| Gearbox | 3-speed |
| Transmission Type Final Drive | Chain |
| Clutch | multi plate wet automatic |
| Fuel Consumption | 2.50 litres/100 km (40.0 km/l or 94.09 mpg) |
| Greenhouse Gases | 58.0 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Exhaust System | sinle stainless steel pipe |
Dimensions & Capacities
| Dry Weight | 85.0 kg (187.4 pounds) |
|---|---|
| Front Percentage Of Weight | 40 |
| Fuel Capacity | 5.50 litres (1.45 gallons) |
| Ground Clearance | 130 mm (5.1 inches) |
| Overall Height | 995 mm (39.2 inches) |
| Overall Length | 1,830 mm (72.0 inches) |
| Overall Width | 640 mm (25.2 inches) |
| Power Weight Ratio | 0.0882 HP/kg |
| Rear Percentage Of Weight | 60 |
| Reserve Fuel Capacity | 1.00 litres (0.26 gallons) |
| Seat Height | 790 mm (31.1 inches) If adjustable, lowest setting. |
| Weight Incl Oil Gas Etc | 91.6 kg (201.9 pounds) |