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Honda CB750 bike (1970-71)

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Honda CB750 bike (1970-71)

At a glance

Capacity
736 cc / 44.9 cub in.
Power
50 kW / 67 hp @ 8000 rpm
Torque
44 lb-ft / 60 Nm @ 7000 rpm
Seat height
800 mm / 31.5 in.

The full picture.

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.


Technical specifications:

Make Model: Honda CB 750 Four K1

Motorcycle technical specifications
Year1970 – 71
EngineFour stroke, transverse four cylinder, SOHC, 2 valve per cylinder.
Capacity736 cc / 44.9 cub in.
Bore x Stroke61 63 mm
Compression Ratio9.0:1
Cooling SystemAir cooled
LubricationDry sump
Induction4 x 28 mm Keihin carbs
IgnitionBattery, coils
StartingElectric, kick
Max Power50 kW / 67 hp @ 8000 rpm
Max Torque44 lb-ft / 60 Nm @ 7000 rpm
ClutchMulti-plate, wet
Transmission5 Speed
Final DriveChain
Gear Ratios1st 13.99 / 2nd 9.54 / 3rd 7.45 / 4th 6.14 / 5th 5.26:1
FrameTubular steel duplex cradle
Front SuspensionTelescopic forks non adjustable.
Rear SuspensionSwingarm, dual shocks, preload adjustable.
Front BrakeSingle 296 mm disc
Rear Brake179 mm Drum
Front Tyre3.25-19
Rear Tyre4.00-18
Wheelbase1453 mm / 57.2 in.
Seat Height800 mm / 31.5 in.
Ground Clearance160 mm / 6.3 in.
Wet Weight226 kg / 499 lbs
Fuel Capacity18.2 L / 4.8 US gal
Oil Capacity3.3 L / 7 US pints
Consumption Average6.9 L/100 km / 14.6 km/l / 34.3 US mpg
Braking Distance 48 km/h / 30 mph – 010 m / 32.9 ft
Braking Distance 97 km/h / 60 mph – 041 m / 135.7 ft
Standing 1/4 Mile13.5 sec / 100.9 mph
Top Speed198 km/h / 123.2 mph