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Difference between revisions of "Kawasaki ZX750A"
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| Line 9: | Line 9: | ||
|predecessor = | |predecessor = | ||
|successor = | |successor = | ||
|class = [[Sport | |class = [[Sport bike]] | ||
|engine = in-line four, four-stroke | |engine = in-line four, four-stroke | ||
|bore_stroke = 66.0mm x 54.0mm | |bore_stroke = 66.0mm x 54.0mm | ||
|compression = 9.5:1 | |compression = 9.5:1 | ||
|top_speed = 134 mph (216 km/h) | |top_speed = 134 mph (216 km/h) | ||
|quarter_mile = 11.93 seconds at 109.62 mph | |||
(176.42 km/h) | |||
|power = 85.15 HP (63.5 KW) @ 9500RPM | |power = 85.15 HP (63.5 KW) @ 9500RPM | ||
|torque = 42.78 ft/lbs (58.0 Nm) @ 7000RPM | |torque = 42.78 ft/lbs (58.0 Nm) @ 7000RPM | ||
| Line 55: | Line 57: | ||
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. | |||
| Line 157: | Line 186: | ||
[[File:Kawasaki-Z750GP-81.jpg|600px|Kawasaki GPz750]] | [[File:Kawasaki-Z750GP-81.jpg|600px|Kawasaki GPz750]] | ||
[[File:Kawasaki_GPZ7500006.jpg|600px|Kawasaki GPz750]] | [[File:Kawasaki_GPZ7500006.jpg|600px|Kawasaki GPz750]] | ||