1991 Honda VFR400R Specs
The Honda VFR400 series of motorcycles were a related series of 399 cc V4-engined motorcycles, which were essentially scaled-down versions of the larger VFR models of the day. There are 3 generation of this motorbike, first generation was the 1986 – 1987 VFR400R NC21, second generation was the VFR400R NC24, and the last generation was the best known VFR400R NC30.
The Honda VFR400R NC30 is widely known to be one of the best handling roadbikes ever made. The engine has a very wide powerband for a 400cc engine, which made it a perfect beginners-superbike. It has a hardcore fanbase, especially in Japan and the UK, where the NC30 is a popular track-day bike. The following table contains detail information about engine, transmission, electrical and dimension specification of the motorbike.
DIMENSION in mm (in)
| Overall length | 1,985 (78.1) |
| Overall width | 705 (27.8) |
| Overall height | 1,075 (42.3) |
| Wheelbase | 1,345 (53.0) |
| Ground clearance | 125 (4.9) |
| Dry weight | 175 kg (385.8 lb) |
| Curb weight | 192 kg (423 lb) |
| Max. weight capacity | 347 lg (765.0 lb) |
FRAME
| Frame type | Backbone |
| Front suspension | Telescopic fork |
| Front wheel travel | 120 mm (4.7 in) |
| Rear suspension | Swingarm |
| Rear damper | Gas-filled damper with reservoir |
| Front brake | Hydraulic double disc |
| Rear brake | Hydraulic single disc |
| Caster angle | 25º20′ |
| Trail length | 96 mm (3.8 in) |
| Fuel tank capacity | 15 liters (4.0 US gal, 3.5 lmp gal) |
| Fuel tank reserve capacity | 2.0 liters (0.5 US gal, 0.4 lmp gal) |
ENGINE
| Bore x stroke | 55.0 x 42.0 mm (2.16 x 1.65 in) |
| Displacement | 399 cm³ (24.3 cu in) |
| Compression ratio | 11.3 : 1 |
| Intake valve opens at 1 mm lift | 15º BTDC |
| Intake valve closes at 1 mm lift | 35º ABDC |
| Exhaust valve opens at 1 mm lift | 35º BBDC |
| Exhaust valve closes at 1 mm lift | 5º ATDC |
| Lubrication system | Forced pressure and wet sump |
| Oil pump type | Trockoid |
| Cooling system | Liquid cooled |
| Air filtration | Paper filter |
| Crankshaft type | Unit-type, 4 main journals |
| Firing order | 1 – 90º – 4 – 270º – 3 – 90º – 2 |
| Cylinder arrangement | 4 cylinders 90º V |
| Carburetor type | Constant velocity, 4 carburetors |
| Throttle bore | 32 mm (1.3 in) |
DRIVE TRAIN
| Clutch system | Multi-plate, wet |
| Clutch operation system | Cable operated |
| Transmission | 6 speeds |
| Primary reduction | 2.117 (34/72) |
| Final reduction | 2.666 (15/40) |
| Gear ratio: | |
| 1st | 2.928 (14/41) |
| 2nd | 2.166 (18/39) |
| 3rd | 1.800 (20/36) |
| 4th | 1.591 (22/35) |
| 5th | 1.435 (23/33) |
| 6th | 1.318 (22/29) |
| Gearshift pattern | Left foot operated return system 1 – N – 2 – 3 – 4 – 5 – 6 |
ELECTRICAL
| Ignition system | Digitalized full transistored ignition |
| Starting system | Electric starter motor |
| Charging system | Triple phase output alternator |
| Regulator/rectifier type | SCR shorted/triple phase full wave rectification |
| Lighting system | Battery |
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