Built around Honda's sport touring motorcycle platform, the 1978 Honda CB 750 A Hondamatic relies on a 736 cc (44.9 cu in) air-cooled in-line four, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 61.0 x 63.0 mm (2.4 x 2.5 inches) with a 8.6:1 compression ratio.
On the scales, the CB 750 A Hondamatic measures 245 kg (540 lbs) dry. Rider ergonomics and chassis geometry center around a 1,480 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 19.5-liter (5.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 129 km/h (80 mph).
Within MotoLibrary's Honda archive, this model family spans 2 indexed model years from 1977 to 1978, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Engine
Displacement736.0 ccm (44.91 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Compression8.6:1
Bore x Stroke61.0 x 63.0 mm (2.4 x 2.5 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox2-speed
Final DriveChain (final drive)
ClutchNo clutch
Performance
Top Speed128.7 km/h (80.0 mph)
Exhaustfour chromed steel pipes
Chassis
Frame Typepainted steel
Rake27.5°
Trail115 mm (4.5 inches)
Wheelbase1480 mm (58.3 inches)
Wheels & Brakes
Front Tyre3.5H19-4PR
Rear Tyre4.5H17-4PR
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight245.0 kg (540.1 pounds)
Overall Height1190 mm (46.9 inches)
Overall Length2250 mm (88.6 inches)
Overall Width865 mm (34.1 inches)
Fuel Capacity19.50 litres (5.15 US gallons)
Reserve Fuel4.00 litres (1.06 US gallons)
Notes
limited two years production. Automatic transmission.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
