The Benelli 650Tornado S is a quintessential Italian motorcycle from the early 1970s, boasting a parallel twin cylinder engine with four-stroke OHV design and two valves per cylinder.
Its horizontally split crankcases and wet sump oil supply system provide a level of sophistication that was lacking in its British rivals. The engine’s short stroke and helical gear primary drive contribute to its smooth and refined operation.
When ridden at moderate speeds, the Benelli 650Tornado S reveals itself to be a charming companion, with the beat of its vertical twin engine providing a reassuring soundtrack for a leisurely ride. However, as the throttle is opened up in anger, a disappointing reluctance to accelerate beyond 70mph becomes apparent, despite its respectable 52hp output.
The bike’s handling is characteristic of an Italian machine: stable, but with stiff suspension that can make it feel tortuous at times.
Key Specifications
Engine Type
Parallel twin cylinders, four stroke, OHV, 2 valves per cylinder
Engine Capacity
642.8 cc / 39.2 cu in
Max Power
38.8 kw / 52 hp
Fuel Tank Capacity
17 L / 4.5 US gal
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
Benelli650Tornado S
Year
1973 – 76
Engine
Engine Type
Parallel twin cylinders, four stroke, OHV, 2 valves per cylinder
Displacement
642.8 cc / 39.2 cu in
Bore x Stroke
84 x 58 mm
Compression Ratio
8.0:1
Max Horsepower
38.8 kw / 52 hp
Engine Management System
2 x Dell’Orto VHB 29 carbs
Cooling System
Air cooled
Performance
Top Speed
n/a
*n/a – information not provided by manufacturer
Transmission
Clutch
Multiplate, wet
Gearbox
5 Speed
Final Drive
Chain
Electrical & Electronics System
Starter
Electric and kick start
Chassis & Suspension
Front Suspension
Marzocchi tele-hydraulic forks
Rear Suspension
Swinging arm, adjustable shocks
Wheels & Brakes
Front Tire Size
3.50 -18
Rear Tire Size
4.00 -18
Front Brakes
Drum, 4 leading shoe
Rear Brakes
Drum
Dimension & Weights
Fuel Tank Capacity
17 L / 4.5 US gal
Dry Weight
210 kg / 463 lbs
Features
Parallel twin cylinders
Four stroke engine
OHV (Overhead Valve) design
2 valves per cylinder
Horizontally split crankcases
Wet sump oil supply with a proper oil filter
Helical gear primary drive
Short stroke engine
Pushrod controlled valve operation
Camshaft in front of the engine
643cc displacement
52hp output
73,492 miles on the clock when purchased
Pirelli tires
Three-gallon petrol tank
Fuel filter clogged as a problem
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*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
