Model: Kawasaki Z1-B
Key Specifications:
- Years: The Kawasaki Z1-B was produced in the early 1970s.
- Engine: It featured a four-stroke, transverse four-cylinder engine.
- Capacity: The engine displacement was 903 cc, making it a powerful motorcycle.
- Bore x Stroke: The engine had a bore and stroke measurement of 66 x 66 mm.
- Cooling System: The Z1-B used an air-cooling system, a common feature in motorcycles from that era.
- Compression Ratio: The compression ratio was 8.5:1, contributing to the engine’s efficiency.
- Lubrication: It utilized a wet sump lubrication system with a trachoid pump.
- Air Filtration: Equipped with a treated synthetic fiber air filtration system.
- Induction: Featured 4 x 28mm Mikuni VM28SC carburetors for fuel delivery.
- Ignition: The ignition system comprised a battery and coil.
- Starting: The Z1-B had both electric and kick start options.
- Max Power: It produced a maximum power of 82 hp (59.8 kW) at 8500 rpm.
- Max Torque: The peak torque was 73.5 Nm (54.3 lb-ft) at 7000 rpm.
- Clutch: Equipped with a wet, multi-plate clutch.
- Transmission: Featured a 5-speed gearbox for versatile riding.
- Final Drive: Used a chain final drive for power transfer to the rear wheel.
- Primary Drive: Utilized straight cut gears for efficient power transmission.
- Frame: The Z1-B featured a double tubular steel cradle frame for strength and stability.
- Suspension: Front suspension comprised 36mm telescopic forks, and the rear had dual shocks with 5-way preload adjustment.
- Brakes: Front brakes included a single 296mm disc with a 2-piston caliper, while the rear had a 200mm drum brake.
- Wheels and Tires: Equipped with a 3.25 H19 front tire and a 4.00 S18 rear tire.
- Rake: The rake angle was 27 degrees.
- Trail: It had a trail measurement of 3.75 inches.
- Dimensions: Length was 2209.8 mm (87.0 in), wheelbase 1498.6 mm (59.0 in), handlebar width 818 mm (32.2 in), seat height 812.8 mm (32.0 in), and ground clearance 170 mm (6.75 in).
- Weight: The dry weight was 230 kg (507 lbs), and wet weight was 247.6 kg (546 lbs).
- Fuel Capacity: The fuel tank had a capacity of 18 liters (4.7 gallons).
- Fuel Consumption: Averaged around 48 mpg.
- Braking Distance: It could come to a stop from 30 mph in 29.00 ft and from 60 mph in 126.00 ft.
- Acceleration: It could accelerate from 0 to 30 mph in 2.7 seconds and from 0 to 60 mph in 4.8 seconds.
- Standing ¼ Mile: Completed in 12.3 seconds at a speed of 112 mph.
- Top Speed: The top speed of the Kawasaki Z1-B was 135 mph.
The Kawasaki Z1-B was a powerful and iconic motorcycle, known for its performance and contribution to the superbike category during the 1970s.
| Specification | Details |
|---|---|
| Model | Z1-B |
| Years | 1975 |
| Engine | Four-stroke, transverse four-cylinder, DOHC, 2 valve per cylinder |
| Capacity | 903 cc / 55.1 cu-in |
| Bore x Stroke | 66 x 66 mm |
| Cooling System | Air cooled |
| Compression Ratio | 8.5:1 |
| Lubrication | Wet sump, trachoid pump |
| Air Filtration | Treated synthetic fiber |
| Induction | 4 x 28mm Mikuni VM28SC |
| Ignition | Battery and coil |
| Starting | Electric & kick |
| Max Power | 82 hp / 59.8 kW @ 8500 rpm |
| Max Torque | 73.5 Nm / 54.3 lb-ft @ 7000 rpm |
| Clutch | Wet, multi-plate |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Primary Drive | Straight cut gears |
| Gear Ratio | 1st 12.79:1, 2nd 8.84:1, 3rd 6.74:1, 4th 5.58:1, 5th 4.92:1 |
| Frame | Double tubular steel cradle |
| Front Suspension | 36mm Telescopic forks |
| Rear Suspension | Dual shock, 5-way preload adjustment |
| Front Brakes | Single 296mm disc, 2 piston caliper |
| Rear Brakes | 200mm drum |
| Front Tyre | 3.25 H19 |
| Rear Tyre | 4.00 S18 |
| Rake | 27° |
| Trail | 3.75 in. |
| Dimensions | Length 2209.8 mm / 87.0 in., Wheelbase 1498.6 mm / 59.0 in, Handlebar Width 818 mm / 32.2 in., Seat Height 812.8 mm / 32.0 in., Ground Clearance 170 mm / 6.75 in. |
| Weight | Dry Weight 230 kg / 507 lbs, Wet Weight 247.6 kg / 546 lbs |
| Fuel Capacity | 18 Litres / 4.7 gal |
| Consumption Average | 48 mpg |
| Braking Distance 30 mph – 0 | 29.00 ft. |
| Braking Distance 60 mph – 0 | 126.00 ft. |
| Acceleration 0-30 mph | 2.7 sec |
| Acceleration 0-60 mph | 4.8 sec |
| Standing ¼ Mile | 12.3 sec / 112 mph |
| Top Speed | 135 mph |