Honda NR
V4 engine, Motorcycle, Honda, Honda NR500, Grand Prix motorcycle racing
978-613-8-25755-4
6138257553
116
2013-01-06
39.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Honda NR (New Racing) was a V-four motorcycle engine series started by Honda in 1979 with the 500cc NR500 Grand Prix racer that used oval pistons. This was followed during the 1980s by a 750cc endurance racer version known as the NR750. The oval piston concept allowed for eight valves per cylinder which generated more power due to the increased air/fuel mixture throughput and compression. In 1992 Honda produced around 300 street versions of a 750cc model, the NR (often mistakenly referred to as the NR750), with a 90-degree V angle. Whereas the NR500 had used an oval piston with straight sides, the road going NR750 used an elliptical piston with curved long sides.
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