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Honda RC116


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The difference between the Honda RC115 and the 1966 RC116 was a new bore and stroke, now being 35.5 x 25.14 mm. Power output is 16 bhp at 21,500 rpm. This means 320 bhp per liter and a Pme of nearly 16 kg/cm2 ! As regards bhp per litre, this is a figure that has never been surpassed by any naturally aspirated four stroke engine, and even today's formula 1 cars with their special fuel brews cannot hold a candle to it. I know this is not a totally fair comparison, but it gives an idea of the level of four stroke technology nearly 40 years ago. This engine is the most advanced of all the Honda engines. Red line at 22,500 rpm. Carburetors have flat slides. The gearbox contains a nine speed cluster. Dry weight of the bike is 58 kg. The piston pin has a diameter of 9 mm and weighs 6 g. The inlet valve head is 13 mm, the exhaust valve head is 11.5 mm, and the stems are 3.5 mm diameter. Weight of the exhaust valve: 6 g.

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