The Yamaha XJ 400 Seca was a motorcycle produced from 1982-83. It featured a four stroke, transverse four cylinder engine and had a capacity of 398cc. The bike was air cooled with a compression ratio of 9.7:1 and used a battery powered inductive ignition system. The engine was capable of producing 45 hp/32.8 kW at 10000 rpm and a maximum torque of 3.5 kgf-m/25.5 [email protected] 8000 rpm. It had a 6-speed transmission with a final drive chain. The front suspension featured 35mm telescopic forks and had a front wheel travel of 142mm/5.6in. The rear suspension was a single shock system with adjustable spring preload and had a rear wheel travel of 96mm/3.8in. The bike had a single disc 1 piston caliper front brake and a drum rear brake. The front tyre was 3.00-19 while the rear tyre was 110 90-18. It had a dry weight of 176kg/388lbs and a fuel capacity of 15 Litres/3.9 US gal. It was capable of reaching a top speed of 162.5 km/h/101 mph and could complete the standing 1/4 mile in 14.0 seconds, reaching a speed of 90.5 mph.
Technical specifications:
Make Model: Yamaha XJ 400 Seca
| Year | 1982 – 83 |
|---|---|
| Engine | Four stroke, transverse four cylinder. DOHC |
| Capacity | 398 cc / 24.2 cu-in |
| Bore x Stroke | 51 48.8 mm |
| Cooling System | Air cooled |
| Compression Ratio | 9.7:1 |
| Induction | 2x 34mm Mikuni carburetor |
| Ignition | Battery powered inductive |
| Starting | Electric |
| Max Power | 45 hp / 32.8 kW @ 10000 rpm |
| Max Torque | 3.5 kgf-m / 25 [email protected] 8000 rpm |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Front Suspension | 35mm Telescopic forks |
| Front Wheel Travel | 142 mm / 5.6 in |
| Rear Suspension | Single shock, adjustable spring preload |
| Rear Wheel Travel | 96 mm / 3.8 in |
| Front Brakes | Single disc 1 piston caliper |
| Rear Brakes | Drum |
| Front Tyre | 3.00-19 |
| Rear Tyre | 110 90-18 |
| Dry Weight | 176 kg / 388 lbs |
| Fuel Capacity | 15 Litres / 3.9 US gal |
| Standing 1/4 Mile | 14.0 sec / 90.5 mph |
| Top Speed | 162.5 km/h / 101 mph |
