Yamaha XJ650 Turbo (1985-86)

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The Yamaha XJ 650 Turbo was produced from 1985-86 and was powered by a four-stroke transverse four-cylinder turbocharged engine with a capacity of 653cc. It had a compression ratio of 8.2:1 and was cooled by air. The motorcycle had 4x 30mm pressurized Mikuni CV carbs with CDI ignition and an electric starter. The maximum power output was 90 hp / 67.1 kW at 9000 rpm with a maximum torque of 8.33 kgf-m at 7000 rpm. The transmission was a 5-speed with a wet, multi-plate clutch and a final drive shaft. The front suspension featured 36mm Showa with 140mm wheel travel and adjustments for air pressure, while the rear suspension had dual Showa dampers with 79mm wheel travel and adjustments for air pressure and rebound damping. The front brakes were two 266mm discs with a single 200mm drum at the rear. The motorcycle had a fuel capacity of 19.5 liters / 5.0 US gal and an average consumption of 43.2 mpg. The dry weight was 235 kg / 518 lbs while the wet weight was 257 kg / 566.5 lbs. In terms of performance, the Yamaha XJ 650 Turbo could accomplish a standing 1/4 mile in 12.68 seconds at 106.13 mph.

Technical specifications:

Make Model: Yamaha XJ 650 Turbo

Year: 1985 – 86


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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