Honda CB750 bike (1970-71)

The Honda CB 750 Four K1 was a motorcycle produced between 1970 and 71, with a four-stroke, transverse four-cylinder, SOHC, two valves per cylinder engine boasting a capacity of 736 cc or 44.9 cu in. It had a dry sump lubrication system and was air-cooled with four 28 mm Keihin carburetors. The bike had a battery and coils ignition and was equipped with electric and kick start. The clutch was multi-plate and wet, and it had a five-speed manual transmission with a chain final drive. The frame was made of tubular steel duplex cradle, and it had telescopic forks non-adjustable front suspension with a swingarm dual shocks preload adjustable rear suspension. The bike had a single 296 mm disc and 179 mm drum rear brake. It sported a wheelbase of 1453 mm or 57.2 in, a seat height of 800 mm or 31.5 in, and a ground clearance of 160 mm, or 6.3 in. The wet weight of the bike is 226 kg or 499 lbs, and the fuel capacity is 18.2 L, with an oil capacity of 3.3 L. The average fuel consumption is 6.9 L/100 km, and the braking distance from 48 km/h or 30 mph to 0 was 10 m or 32.9 ft, while from 97 km/h or 60 mph to 0, it was 41 m or 135.7 ft. The top speed of the Honda CB 750 Four K1 was 198 km/h or 123.2 mph, and it had a standing quarter-mile time of 13.5 sec and 100.9 mph.

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Technical specifications:

Make Model: Honda CB 750 Four K1

Year: 1970 – 71

Engine: Four stroke, transverse four cylinder, SOHC, 2 valve per cylinder.

Capacity: 736 cc / 44.9 cub in.

Bore x Stroke: 61 63 mm

Compression Ratio: 9.0:1

Cooling System: Air cooled

Lubrication: Dry sump

Induction: 4 x 28 mm Keihin carbs

Ignition: Battery, coils

Starting: Electric, kick

Max Power: 50 kW / 67 hp @ 8000 rpm

Max Torque: 44 lb-ft / 60 Nm @ 7000 rpm

Clutch: Multi-plate, wet

Transmission: 5 Speed

Final Drive: Chain

Gear Ratios: 1st 13.99 / 2nd 9.54 / 3rd 7.45 / 4th 6.14 / 5th 5.26:1

Frame: Tubular steel duplex cradle

Front Suspension: Telescopic forks non adjustable.

Rear Suspension: Swingarm, dual shocks, preload adjustable.

Front Brake: Single 296 mm disc

Rear Brake: 179 mm Drum

Front Tyre: 3.25-19

Rear Tyre: 4.00-18

Wheelbase: 1453 mm / 57.2 in.

Seat Height: 800 mm / 31.5 in.

Ground Clearance: 160 mm / 6.3 in.

Wet Weight: 226 kg / 499 lbs

Fuel Capacity: 18.2 L / 4.8 US gal

Oil Capacity: 3.3 L / 7 US pints

Consumption Average: 6.9 L/100 km / 14.6 km/l / 34.3 US mpg

Braking Distance 48 km/h / 30 mph – 0: 10 m / 32.9 ft

Braking Distance 97 km/h / 60 mph – 0: 41 m / 135.7 ft

Standing 1/4 Mile: 13.5 sec / 100.9 mph

Top Speed: 198 km/h / 123.2 mph