Kawasaki GPz305 Belt Drive
File:Kawasaki-GPZ-305 1.jpeg | |
Kawasaki GPz305 Belt Drive | |
Manufacturer | |
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Production | 1983 - |
Engine | Four stroke Parallel twin SOHC |
Compression ratio | 9.7:1 |
Top Speed | 101 mph |
Ignition | Magneto CDI |
Transmission | 6 Speed |
Suspension | Front: Telescopic forks Rear: Swing arm |
Brakes | Front: 2x disc Rear: Drum |
Front Tire | 90/90-18 |
Rear Tire | 110/80-18 |
Wheelbase | 1355 mm / 53.3 in |
Seat Height | 784 mm / 30.8 in |
Weight | 147 kg / 324 lbs (dry), 160.6 kg / 354 lbs (wet) |
Recommended Oil | K-tech 10W-40 |
Fuel Capacity | 16.5 Liters / 4.3 US gal |
Manuals | Service Manual |
It could reach a top speed of 101 mph.
Engine[edit | edit source]
The engine was a cooled Four stroke Parallel twin SOHC. The engine featured a 9.7:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Wet clutch.
Chassis[edit | edit source]
It came with a 90/90-18 front tire and a 110/80-18 rear tire. Stopping was achieved via 2x disc in the front and a Drum in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Swing arm. The GPz305 Belt Drive was fitted with a 16.5 Liters / 4.3 US gal fuel tank. The bike weighed just 147 kg / 324 lbs. The wheelbase was 1355 mm / 53.3 in long.
Photos[edit | edit source]
Overview[edit | edit source]
Kawasaki GPz 305
The Kawasaki Gpz305 was a 306 cc (18.7 cu in) twin cylinder air-cooled SOHC
four-stroke motorcycle, produced in 1983 and 1994. The model evolved from
the earlier ER250 model and used an overbored 61 mm × 52.4 mm (2.40 in × 2.06
in) version of the 249 cc engine first produced in 1979. Kawasaki gave this
model the "Gpz" nomenclature to add to its expanding air-cooled sports bike
range, and was marketed as a sports machine. It originally had chain final drive
but in 1983 it had a new Kevlar belt final drive first seen on Kawasaki's
American styled cruisers.
It was available with a 250 cc engine as the Kawasaki Scorpion, but came in a different color scheme.
In Cycle World's "Ten Best Bikes of 1983", the Gpz305 won best "Under 460 cc Street" motorcycle, because it was the "best of the lightweight roadsters", combining small bike advantages of low weight and low cost with the fun of a sport bike.[3] In their review, Cycle World praised the bike's quick handling in comparison with heavier, more powerful motorcycles, saying that the while 1,100 and 750 cc (67 and 46 cu in) displacement bikes have a much greater engine power advantage, they typically have 60 in (1,500 mm) wheelbases, giving the 55.2 in (1,400 mm) wheelbase Gpz305 an advantage in the ease that it leans into a turn.[1] They also said that while large engines have the advantage of having a wide power band and do not need frequent shifting during casual riding, the Gpz305's lack of power below 7,000 rpm forces the rider to shift frequently to get the most out of the bike, making it more fun to ride. The review said the Gpz305's air-fuel ratio was excessively lean in order to meet EPA emissions requirements, which meant the bike took 10 mi (16 km) of riding to warm up enough to run smoothly without using the choke, and that the bike benefited greatly from re-jetting the carburetor, without losing fuel economy in the process. Source Wikapidia
Make Model | Kawasaki GPZ 305 |
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Year | 1983 - |
Engine Type | Four stroke Parallel twin SOHC |
Displacement | 306 cc / 18.7 cu-in |
Bore X Stroke | 61.0 x 52.4 mm |
Cooling System | |
Compression | 9.7:1 |
Lubrication | Forced feed lubrication |
Induction | 2x 32mm Keihin CVi carburetors |
Ignition | Magneto CDI |
Starting | Electric |
Max Power | 19.9 kW / 26.6 hp @ 10000 rpm |
Max Torque | 25.5 Nm / 18.8 lb·ft @ 8500 rpm |
Clutch | Wet clutch |
Transmission | 6 Speed |
Final Drive | Belt |
Front Suspension | Telescopic forks |
Rear Suspension | Swing arm |
Front Brakes | 2x disc |
Rear Brakes | Drum |
Front Tire | 90/90-18 |
Rear Tire | 110/80-18 |
Rake | 26,5° |
Trail | 95 mm / 3.7 in |
Wheelbase | 1355 mm / 53.3 in |
Seat Height | 784 mm / 30.8 in |
Dry Weight | 147 kg / 324 lbs |
Wet Weight | 160.6 kg / 354 lbs |
Fuel Capacity | 16.5 Liters / 4.3 US gal |
Consumption Average | 65 mp/g |
Standing ¼ Mile | 14.7 sec / 86 mph |
Top Speed | 101 mph |