1978 Honda C90 K3 Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1978 Honda C90 K3.

Basic Specs

Year1978
MakeHonda
ModelHonda C90 K3
Cost

Engine

Displacement89.00 ccm (5.43 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM10000
Compression8.2:1
Bore/Stroke50.0 x 45.6 mm (2.0 x 1.8 inches)
Valves/Cylinder2
FuelingCarburettor. keihin seiki
Ignitioncontact breaker points
Exhaustsinle stainless steel pipe
Lubricationwet sump
CoolingAir

Drivetrain

Gearbox3-speed
Final DriveChain
Clutchmulti plate wet automatic
Driveline

Performance

Horespower7.50 HP (5.5 kW)
Torque0.67 Nm (0.1 kgf-m or 0.5 ft.lbs)
Top Speed80.0 km/h (49.7 mph)

Fuel Economy & Polution

Fuel Consumption2.50 litres/100 km (40.0 km/l or 94.09 mpg)
Fuel Capacity5.50 litres (1.45 gallons)
Emissions58.0 CO2 g/km. (CO2 - Carbon dioxide emission)

Chassis

Frame Typepressed steel monoque with engine part of loadbearing
Rake27.0°
Trail75 mm (3.0 inches)
Front Suspensionhydraulically dampened leading link forks
Front Travel75 mm (3.0 inches)
Rear Suspensionhydraulically dampened with compression spring
Rear Travel100 mm (3.9 inches)
Seat
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height995 mm (39.2 inches)
Total Length1,830 mm (72.0 inches)
Total Width640 mm (25.2 inches)
Ground Clearance130 mm (5.1 inches)
Wheelbase1,190 mm (46.9 inches)
Dry Weight85.0 kg (187.4 pounds)
Wet Weight91.6 kg (201.9 pounds)

Wheels & Brakes

Front Tire/Tyre
Rear Tire/Tyre
Front BrakesExpanding brake (drum brake). twin expanding shoe
Front Brake Diameter110 mm (4.3 inches)
Rear BrakesExpanding brake (drum brake). twin expanding shoe
Rear Brake Diameter110 mm (4.3 inches)
Wheels

Comments

It appears you're interested in specifications for the Honda C90 K3. This Scooter model is powered by a Single cylinder, four-stroke engine with 89.00 ccm (5.43 cubic inches) of actual displacement before 8.2:1 compression. Fueling is metered via Carburettor. keihin seiki allowing this machine to produce its 7.50 HP (5.5 kW) horsepower and 0.67 Nm (0.1 kgf-m or 0.5 ft.lbs) torque. According to our records engine heat of the Honda C90 K3 is moderated by Air. You'll need to get familiar with the 3-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is and the rear is . The entire package is supported by the frame, pressed steel monoque with engine part of loadbearing. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake). twin expanding shoe front brakes and Expanding brake (drum brake). twin expanding shoe rear brakes. The Honda C90 K3 was launched in 1978, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.

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