Kawasaki GPz750
 | |
| Manufacturer | Kawasaki |
|---|---|
| Production | 1981 |
| Engine | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder |
| Compression ratio | 9.5:1 |
| Top speed | 217 km/h / 135 mph |
| Ignition type | Digital |
| Transmission | 5 Speed |
| Suspension | Front: 36mm Air assisted forks Rear: Dual shocks spring preload and rebound damping adjustable |
| Brakes | Front: 2x 260mm discs Rear: Single 260mm disc |
| Front Tire | 100/90 -19 |
| Rear Tire | 130/90 -16 |
| Wheelbase | 1500 mm / 59 in |
| Seat height | 780 mm / 31 in |
| Weight | 217 kg / 478.5 lbs (dry), 230 kg / 506 lbs (wet) |
| Fuel capacity | 24.5 Liters / 5.8 US gal |
| Manuals | Service Manual |
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It could reach a top speed of 217 km/h / 135 mph.
Engine
The engine was a Air cooled cooled Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. The engine featured a 9.5:1 compression ratio.
Chassis
It came with a 100/90 -19 front tire and a 130/90 -16 rear tire. Stopping was achieved via 2x 260mm discs in the front and a Single 260mm disc in the rear. The front suspension was a 36mm Air assisted forks while the rear was equipped with a Dual shocks spring preload and rebound damping adjustable. The GPz750 was fitted with a 24.5 Liters / 5.8 US gal fuel tank. The bike weighed just 217 kg / 478.5 lbs. The wheelbase was 1500 mm / 59 in long.
Photos
Overview
Kawasaki GPz 750 / Z 750GP
The Kawasaki GPz750 was a sport bike introduced by Kawasaki in 1981/1982. It was more than a warmed-over KZ750, as it was improved in many areas, focusing on high-performance. Changes started at the front, with tapered bearings in the steering head instead of the KZ750's ball bearings, and the upper triple clamp was changed also, giving the GPz solid aluminum clip-on handle grips instead of the traditional handlebar. A bikini fairing almost identical to the one on the GPz550 was added too. The GPz750 boasted increased power, with slightly higher compression, and camshafts designed to get the valves to full lift quicker, and fitting Mikuni 34mm carburetors to it for smoother airflow. The cylinder heads were also given a new combustion chamber with a 'squish zone' and porting & polishing from the factory. To maintain reliability oil passages were installed under the pistons for increased cooling, and an oil-cooler was added. The GPz750 was the quickest factory 750, as Cycle World recorded a time of 11.93 seconds at 109.62 mph (176.42 km/h) in the 1/4 mile. The GPz750 underwent some significant changes in 1983. The original was based on the 1981 KZ750-E. Kawasaki retired the KZ750 after 1983. The 1983 KZ750L3 was nearly identical to the '82 GPz750, but with different colors, no bikini fairing, and without the porting & polishing in the cylinder head. In 1983, the engine was modified further, mostly in the combustion chamber, and an all-new frame was used with Uni-Trak suspension. There were also modifications to the suspension, brakes and wheels, as well as the bodywork. The bike became more sport-oriented, but lost some of the versatility of the '82.
| Make Model | Kawasaki GPz 750 / Z 750GP |
|---|---|
| Year | 1981 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder |
| Displacement | 738 cc / 45.0 cu-in |
| Bore X Stroke | 66 х 54 mm |
| Cooling System | Air cooled |
| Compression | 9.5:1 |
| Induction | 4x 36mm Mikuni carburetors |
| Ignition | Digital |
| Starting | Electric |
| Max Power | 78.hp / 57 kW @ 9500 rpm |
| Max Torque | 6.0 kgf-m / 43.3 lb-ft @ 7000 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Front Suspension | 36mm Air assisted forks |
| Front Wheel Travel | 150 mm / 5.9 in |
| Rear Suspension | Dual shocks spring preload and rebound damping adjustable |
| Rear Wheel Travel | 112 mm / 4.4 in |
| Front Brakes | 2x 260mm discs |
| Rear Brakes | Single 260mm disc |
| Front Tire | 100/90 -19 |
| Rear Tire | 130/90 -16 |
| Rake | 28° |
| Trail | 100 mm/ 3.9 in |
| Wheelbase | 1500 mm / 59 in |
| Seat Height | 780 mm / 31 in |
| Dry Weight | 217 kg / 478.5 lbs |
| Wet Weight | 230 kg / 506 lbs |
| Fuel Capacity | 24.5 Liters / 5.8 US gal |
| Consumption Average | 45.7 mpg |
| Standing ¼ Mile | 12.2 sec / 107 mph |
| Top Speed | 217 km/h / 135 mph |
| Road Test | Cycle 1982 |