Comprei uma CBX 200S Strada Parte 48 Montagem do Cabeçote, Cilindro e pistão

Personnel this is the way of calculating the engine compression. We have to: Piston diameter: 63,505 mm Piston stroke inside cylinder: 62,200 mm Combustion chamber volume: 23 CC To perform this calculation we must have the same unit for all measurements, so let's turn everything to centimeter, once we want the result in cm³ / CC (cubic centimeter). Piston diameter: 6,35 cm Piston stroke inside the cylinder: 6,22 cm Combustion chamber volume: 23 CC or cm³ Soon we have: For piston area 6.35 X 6.35 x 3.14 = 126.61 now divide by 4. 136.61: 4 = 31.65 cm² Now we multiply the area by the stroke of the piston 31.65 X 6.22 = 196 cm 3 or CC. Now we add the volume of the cylinder to the volume of the combustion chamber of the head. 196 + 23 = 219 cm³ or CC Now we divide by the volume of the combustion chamber of the head. 219: 23 = 9.52: 1 ie for this mount we have 9.52 for 1 compression rate of the motor. In the manul speaks in 9,1: 1 this difference is given as we do not consider the volume measurements of the piston and head gasket, as our calculation gave slightly above that announced in the manual / datasheet of the engine we can consider that we are within the the calculation changes are small if we consider all measures.