Honda - CB 400 SF (F2S/F2T) Superfour (Japan) NC31 93-94

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Bike Info

CC:
400
Chassis info:
NC31
CB 400 SF (F2S/F2T) Superfour (Japan) NC31 Parts and accessories

Service

Chain Freeplay mm:
30-40mm
Cooling System (litres):
1.6
Engine Oil Grade SAE:
10/40w
Engine Oil quantity (litres):
2.7
Engine Oil quantity with filter (litres):
2.9
Fork oil grade:
10w
Front Fork Oil cc (left leg):
499cc (112mm from top, no springs)
Front Fork Oil cc (right leg):
499cc (112mm from top, no springs)
Idle Speed (rpm):
1200rpm ± 100
Spark Plugs Gap (mm):
0.8-0.9
Tyre Pressure Back Bar / psi:
32psi / 2.2bar
Tyre Pressure Front Bar / psi:
28psi / 2bar
Valve Clearance Cold - Exhaust:
0.19-0.25mm
Valve Clearance Cold - Inlet:
0.12-0.18mm

Brakes

Front:
Twin Disc
Rear:
Disc
Brake fluid:
DOT4
Front Disc Size:
298mm
Front-Pistons-per-caliper:
Twin Piston Calipers
Rear Disc Size:
220mm

Dimensions

Dry Weight:
173Kg. / 381 lbs
Fuel Capacity:
15 Litres
Ground Clearance:
130 mm
Height:
1070 mm
Length:
2050 mm
Rake:
27.15°
Reserve Fuel Capacity:
2 Litres
Seat Height:
760 mm
Wet Weight:
188Kg / 414.5 lbs
Wheelbase:
1415 mm
Width:
725 mm

Electrics

Voltage:
12v
Bulb-Headlight:
70/80w FF ("Future Focus" but H4 will fit, cut one tab)
Spark Plugs:
NGK CR8EH-9

Engine

Type:
Liquid Cooled 4 Stroke DOHC Straight Four
Bore x Stroke:
55 x 42 mm
Carburation:
Keihin CVx4 (VP22)
Carburation Idle Jet:
35
Carburation Main Jet:
1+4: 95, 2+3: 98
Compression Ratio:
11.3
Displacement:
399 cc
No. of Valves:
16
Pilot Screw Setting:
2 1/2
Red line RPM:
12500
Starting:
Electric

Transmission

Chain Number of Links:
112
Chain type:
525
Clutch Type:
Wet Multiplate
Final Drive:
Chain
Gearchange Pattern:
1-N-2-3-4-5-6
Gear Ratio 1st:
3.307
Gear Ratio 2nd:
2.294
Gear Ratio 3rd:
1.750
Gear Ratio 4th:
1.428
Gear Ratio 5th:
1.240
Gear Ratio 6th:
1.130
Sprocket front:
15
Sprocket rear:
46
Transmission:
6 Speed

Misc.

Exhaust:
4 into 1 with 3 bolt-on silencer can
Frame:
Tubular steel cradle frame(NC31)
Motorcycle Style:
ROADSTER
Place of Manufacture:
Japan

Power

Fuel Consumption:
45-55mpg (5.2-4.2l/100km)
Max Power Output:
53 BHP (39.5kW) / 11500rpm
Max Torque:
30ft.lb. (4kgm) (40Nm) @ 9500 rpm
Standing 1000m:
170 kph
Standing 1/4 mile:
14.5 seconds
Top Speed:
105 mph (restrictor fitted) (170kph)

Suspension

Front:
41mm telescopic forks
Front Travel:
130 mm
Rear:
win ShTwin Showa remote reservoir shocks with 5 step preload adjustment
Rear Travel:
110 mm

Tyres

Front:
110/70-17 Tubeless
Rear:
140/70-17 Tubeless