Yamaha XJ650 Turbo (1982-84)

The Yamaha XJ650 Turbo was produced from 1982-84 with approximately 8000 units made. It features a four-stroke transverse four-cylinder engine with a turbocharger, DOHC, and 2 valves per cylinder. Its capacity is 653cc and it has a compression ratio of 8.2:1. The bike has an air-cooled cooling system and uses 4x 30mm pressurized Mikuni CVs carburetors for induction. Its maximum power is 90hp/67.1kW at 9000 RPM with 8.33 kgf-m @ 7000 RPM max torque. The bike has a wet multi-plate clutch and a 5-speed transmission with a shaft final drive. The front suspension is a 36mm Showa with 140mm wheel travel, and the rear suspension has dual Showa dampers with 79mm wheel travel and adjustments for air pressure and rebound damping. It has a front brake of 2x 266mm discs and a rear brake of a single 200mm drum, with a front tire size of 3.25-19 and a rear tire size of 120/90 V18. With a dry weight of 235kg/518lbs and wet weight of 257kg/566.5lbs, the fuel capacity is 19.5 liters/5.0 US gal with an average fuel consumption rate of 43.2 mpg. The bike is capable of completing a standing ¼ mile in 12.68 seconds at 106.13 mph.


Technical specifications:

Make Model: Yamaha XJ 650 Turbo

Year: 1982 – 84


Production: ’82: approx 6500, ’83: approx 1500
Engine: Four stroke transverse four cylinder. turbocharged. DOHC, 2 valves per cylinder,
Capacity: 653 cc / 39.8 cu-in
Bore x Stroke: 63 52.4 mm
Cooling System: Air-cooled
Compression Ratio: 8.2:1
Induction: 4x 30mm pressurized Mikuni CVs carburetors
Ignition: CDI
Starting: Electric
Max Power: 90 hp / 67.1 kW @ 9000 rpm
Max Torque: 8.33 kgf-m @ 7000 rpm
Clutch: Wet, multi-plate
Transmission: 5 Speed
Final Drive: Shaft
Front Suspension: 36mm Showa 140mm wheel travel, adjustments for air pressure

Rear Suspension: Dual Showa dampers, 79mm wheel travel, adjustments for air pressure, rebound damping
Front Brakes: 2x 266mm discs
Rear Brakes: Single 200mm drum
Front Tyre: 3.25-19
Rear Tyre: 120/90 V18
Dry Weight: 235 kg / 518 lbs
Wet Weight: 257 kg / 566.5 lbs
Fuel Capacity: 19.5 Litres / 5.0 US gal
Consumption Average: 43.2 mpg
Standing 1/4 Mile: 12.68 sec / 106.13 mph

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