Yamaha XJ 650 Turbo (1982-84) vs Moto Guzzi 850 Le Mans Mark I (1977)
Comparison technical specifications
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| Make: | Yamaha | Moto Guzzi |
| Model: | XJ 650 Turbo | 850 Le Mans Mark I |
| Years: | 1982-84 | 1977 |
| Engine: | Four stroke transverse four cylinder. turbocharged. DOHC, 2 valves per cylinder, | Four stroke, 90° V twin, longitudinally mounted, OHV pushrod, 2 valves per cylinder |
| Capacity: | 653 cc / 39.8 cu-in | 844 cc / 51.5 cu-in |
| Bore x Stroke: | 63 х 52.4 mm | 83 x 78 mm |
| Cooling System: | Air-cooled | Air cooled |
| Compression Ratio: | 8.2:1 | 10.2:1 |
| Induction: | 4x 30mm pressurized Mikuni CVs carburetors | 2x 36mm Dell'Orto carburetors |
| Ignition: | CDI | Battery with double contact breakers and coils |
| Starting: | Electric | Electric |
| Max Power: | 90 hp / 67.1 kW @ 9000 rpm　 | 80 hp / 59.7 kW @ 7300 rpm |
| Max Torque: | 8.33 kgf-m @ 7000 rpm | 79 Nm / 57.5 lb-ft @ 6000 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Shaft | Shaft |
| Front Suspension: | 36mm Showa 140mm wheel travel, adjustments for air pressure | Telescopic forks |
| Rear Suspension: | Dual Showa dampers, 79mm wheel travel, adjustments for air pressure, rebound damping | Swinging arm, 5-WAY adjustable coil springs preload |
| Front Brakes: | 2x 266mm discs | 2x 300mm discs |
| Rear Brakes: | Single 200mm drum | Single 242mm disc |
| Front Tyre: | 3.25-19 | 3.5H-18 |
| Rear Tyre: | 120/90 V18 | 4.10V-18 |
| Dry Weight: | 235 kg / 518 lbs | 198 kg / 435 lbs |
| Wet Weight: | 257 kg / 566.5 lbs | 232 kg / 512 lbs |
| Fuel Capacity: | 19.5 Litres / 5.0 US gal | 22.5 Litres / 5.9 US gal |
| Consumption Average: | 43.2 mpg | 39.6 mpg |