Yamaha XJ 750 Seca (1981-83) vs Yamaha FZ-6N S2 (2007)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | XJ 750 Seca | FZ-6N S2 |
| Years: | 1981-83 | 2007 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 749 cc / 45.6 cu-in | 599 cc / 36.5 cu-in |
| Bore x Stroke: | 65 х 56.4 mm | 65.5 x 44.5 mm |
| Cooling System: | Air cooled | Liquid cooled |
| Compression Ratio: | 9.2:1 | 12.2:1 |
| Induction: | 4x 34mm Mikuni Carburetors | Group injection type fuel injection, 36mm Funnel diameter |
| Ignition: | Transistorized | TCI Digital CDI |
| Starting: | Electric | Electric |
| Max Power: | 82 hp / 59.9 kW @ 9000 rpm | 98 hp / 72 kW @ 12000 rpm |
| Max Torque: | 67 Nm / 6.9 kgf-m @ 7500 rpm | 63.1 Nm / 6.4 kgf-m @ 10000 rpm |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Shaft | Chain |
| Frame: | Steel, double cradle frame | Aluminium, twin spar |
| Front Suspension: | Telescopic forks | 43mm Telescopic fork, |
| Front Wheel Travel: | 150 mm / 5.9 in | 130 mm / 5.1 in |
| Rear Suspension: | Swing arm | Swingarm Link less type Monocross |
| Rear Wheel Travel: | 96 mm / 3.8 in | 120 mm / 4.7 in |
| Front Brakes: | Single 269mm disc | 2x 298 mm discs |
| Rear Brakes: | Drum | Single 245 mm disc |
| Front Tyre: | 3.25-19 | 120/70 ZR17 |
| Rear Tyre: | 120/90-18 | 180/55 ZR17 |
| Wheelbase: | 1445 mm / 56.8 in | 1440 mm / 56.7 in |
| Fuel Capacity: | 19 Litres / 4.7 US gal | 19 Litres / 5.0 US gal |
| Standing ¼ Mile: | 12.3 sec / 106.6 mph | 12.1 sec |
| Top Speed: | 204.3 km/h / 127 mph | 219.3 km/h |