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1989-1990 Honda CB-1 (CB400F) Specifications

Capacities  Dimensions  Engine  Frame  Performance  Suspension  Tires 

Engine

Engine TypeLiquid-cooled, 4-stroke, inline 4
Displacement399cc (24.3 cu in)
Compression Ratio11.5:1
Bore and Stroke55.0mm x 42.0mm
Valve Train16 valve, Gear driven DOHC
Intake Valve Opens at 1mm lift 5 deg. ATDC
Closes at 1mm lift 33 deg. ABDC
Exhaust Valve Opens at 1mm lift 33 deg. BBDC, 38 deg BBDC (California)
Closes at 1mm lift 5 deg. BTDC, 10 deg BTDC (California)
Engine Weight126lbs (57kg)
Ignition SystemCDI
Lubrication SystemForced lubrication wet sump
Starting SystemElectric
Charging System Regulated voltage 14.0-16.0v @ 5,000 rpm
Charging current 0-8A @ 5,000 rpm
...120 Watts
Carburetor Type VG06, 32.5mm (1.28 in)
Transmission Type6-speed, constant mesh
Gear Ratios 1st: 3.307 (43/13)
2nd: 2.352 (40/17)
3rd: 1.875 (30/16)
4th: 1.590 (35/22)
5th: 1.434 (33/23)
6th: 1.333 (32/24)
Clutch TypeWet, Multi-disc, Manual, Cable-actuated
Final Drive SystemChain, 525x104
Front Sprocket15T
Rear Sprocket41T
BatteryYTX9-BS
SparkplugNGK CR8EH9

Frame

Rake/Trail25.5 deg/3.9 inches (99mm)
Frame TypeDiamond

Suspension/Tires

Front TireTubeless; 110/70x17
Rear TireTubeless; 140/70x17
BrakesSingle Disc front and rear
Forks 41mm Hydraulic telescopic w/ 130mm (5.1 in) of travel
Shock? w/ 110mm (4.3 in) of travel

Dimensions/Weights

Overall Length80.1 in (2035 mm)
Overall Width27.8 in (705 mm)
Overall Height40.4 in (1025 mm)
Seat Height30.5 in (775 mm)
Wheelbase53.9 in (1370 mm)
Ground Clearance5.1 in (130 mm)
Foot Peg Height13.2 in (335mm)
Dry/Wet Weight375/403 pounds
Max Load347 pounds

Capacities

Fuel Tank3.04 Gallons (0.92 Gal Reserve)
Engine Oil 
Coolant 

Performance

0-60 mph (0-100km/h) 
1/4 Mile13.2 seconds @ 102.1 mph
Maximum Speed119 mph
Horsepower (RW) 46 @ 11,000rpm Dyno Chart
Torque (RW)22.1 ft/lbs @ 10,000 RPM
Braking Distance 
Minimum Turning Radius 
Fuel Efficency44 MPG

In memory of Speedshop  LP Privateer  LP Racing  Aftershocks  Pirelli

April 18, 2007