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To compare the technical specifications and features of Kawasaki ZX-6R and Yamaha Fazer FZ-1 is a good way to find out which one of these motorcycles will better match your style and requirements. You certainly have your own comfort zones in speeding, handling and sitting position and these should guide you to your choice of motorcycle. After comparing one motorcycle versus another and so on, the circle of favourite models will be then eventually narrowed to several ones. A good way to find the most suitable one among them would be to sit on each of them and if possible ride it for a while.
The bigger engine size of Yamaha Fazer FZ-1 in comparison to Kawasaki ZX-6R doesn't mean that it is more powerful or better performing bike. The first bike has the advantage of greater compression ratio of 12.9:1 than the other one. This is the ration of the volumes in the cylinder in two stages of the stroke when the piston is at the lowest and then at the highest point in the cylinder. When the mixture of air and fuel in the combustion chamber has bigger pressure (higher compression ratio) when it is ignited then it burns more effectively and therefore these bikes tend to have better fuel economy (comparing engines with equal displacement). The bike with a better fuel economy is the Kawasaki ZX-6R which can travel 43.6 miles with one gallon of fuel. Yamaha Fazer FZ-1 on the contrary can travel 37.6 miles with a gallon. There are two ways of showing the fuel economy of a motorcycle - describing how many miles it can travel with a single gallon of fuel (mpg) or how many litters of fuel it is burning on a 100 kilometer trip (l\100km). ![]() As per the data sheets Yamaha Fazer FZ-1 has a bigger ground clearance (135mm) than Kawasaki ZX-6R (130mm). The ground clearance is also called the ride height and that is the distance between the base of the tyre and underside of the motorcycle’s body (the chassis). In other words that is the shortest distance between the road surface and the lowest mechanical part of the motorcycle. Kawasaki ZX-6R is the faster of the two with top speed of 279 kilometers per hour against the max speed of 246 km/h specified to its opponent Yamaha Fazer FZ-1. However sources may vary as to whether these top speed parameters are precise or only approximate. ![]() Kawasaki ZX-6R is liquid cooled and so is the Yamaha Fazer FZ-1. The pretty constant ranges of operating temperature are typical for the liquid cooled engines. Once the operating temperature is reached (the engine is warmed up), it runs at a pretty constant temperature. The main principle is circulation of the liquid between the radiator and the engine. If the motorcycle slows down to a point where the air flowing through the radiator is not enough to lower the temperature of the coolant to the needed level, a thermostat will typically switch an electric fan on to increase the air flow through the radiator. However the water pump, the thermostat, the radiator and all the linking gear makes it a bit more complex. ![]() Compression ratio Imagine an engine's piston is at the bottom of its stroke (step one) and moves up compressing the gas in the cylinder till it reaches its top position of the stroke (step 2). The compression ratio is the ration of the volume in step one over the volume in step two. The compressio ratio of Yamaha Fazer FZ-1 is 11.5:1 and it is 12.9:1 for Kawasaki ZX-6R according to the motorcycles technical data above. Motorcycles with higher compression ratio may be recommended to use premium fuel only in order to avoid engine knocking. Higher compression ratio means bigger pressure of the fuel/air mix in the combustion chamber and better efficiency achieved of its ignition. One of the most important aspects of the basic level of maintenance of a motorcycle is the engine oil. Synthetic engine oils are considered the most technically advanced one and are more expensive than the mineral oils which come at lower price. 3700 miles (6000 km) between oil changes is widely accepted rule. With synthetic oil though you can run as far as 8000 kilometers (5000 miles). Replacing the oil filter is also to be considered on each engine oil change. The oil capacity of Kawasaki ZX-6R is 3.1 litres and the engine oil of Yamaha Fazer FZ-1 is 3.7 litres as per their technical specs. The oil capacity information is only to get an idea of how much oil roughly will be needed on oilchange. The proper amount of oil needed is best judged while observing the reading on the level sight window (or the dipstick). |
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