Honda CB1 Motorcycles


1989-91 CB400F CB-1

Engine

Engine Liquid cooled, four stroke, Transverse four cylinder, DOHC, 4 valves per cylinder.
Displacement 399cc
Bore x Stroke 55 x 42 mm
Piston clearance 0.03 mm – 0.04 mm
Compression Ratio 11.3:1
Engine oil capacity, without the filter 2.8 litres (2.9 qt)
Oil Capacity with Filter 3.1 litres (3.3 qt)
Oil filter Cartridge
Coolant quantity 1.8 litres (1.9 qt)
Fuel Delivery Two 30mm Keihin CV
Carburetor type VG06B (America) – VG06C (California)
Main Jet 105
Low speed 35
Float level 8mm
Idle speed 1200 rpm
Mixture 2.25 revolutions
Fuel normal unleaded 91 octane
Ignition CDI
Battery YTX9BS 12V / 8 Ah
Spark Plug NGK CR8EH-9
Electrode gap 0.8 mm – 0.9 mm
Ignition timing “F-mark” 16° BTDC at 1300rpm
Alternator stator yellow-yellow 0.1 Ohm – 0.5 ohms at 20° C.
Pulse yellow – white / yellow 340 Ohm – 420 Ohm at 20° C.
Ignition coil 2 ohms – 4 ohms / 23 kOhms – 27 kohm at 20° C.
Starter Electric
Max Power 55.2 hp @ 10000 rpm
Rated Power 41kW (58PS) @ 10,750 rpm
Max Torque 37Nm (29 ft-lb) @ 9500 rpm

Drivetrain

Transmission 2-speed automatic with torque convertor
Front sprocket 15 teeth
Rear sprocket 41 teeth
Chain tension 20mm
Final Drive Chain
Drive chain name RK 525 SMO Z4 / DID 525 V8

CHASSIS / SUSPENSION / BRAKES

Front Suspension 41mm Telescopic forks
Fork oil capacity per rod 510 cm
Fork oil ATF (SAE 7.5)
Fork Travel 95mm
Rear Suspension Pro-link monoshock
Front Brakes Single 310mm disc 2 piston caliper
Rear Brakes Single 240mm disc 1 piston caliper
Front Tires 110/70-17 54H
Rear Tires 140/60-17 66H

DIMENSION

Dry-Weight 183 kg (403 lb)
Fuel Capacity 13 Litres (3.4 Gal)
Maximum speed 183 km/h (114 mph)
Acceleration 5.4 seconds from 0-100 km/h
Tire pressure front / rear 225kPa (32 psi) / 2.5 bar (36 psi)
Brake fluid DOT4
Headlight bulb H4 12V 60W/55W
Tail and brake light bulb 12V 5W/21W
Signal lights 12V 21W

OTHER

Colors
  • Pearl Presto Blue
  • Red
  • The exhaust system was a 4-into-1
  • The camshafts were gear driven
  • The engine was a 399cc DOHC 4-valve liquid cooled inline 4 cylinder linked to a 6-speed transmission
  • The serial number began JH2NC270*KM000010.

CB1 Photo Gallery

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