Yamaha Engine Modifications Jupiter MX
This is a little work we are in a probe of Jupiter MX machines. With extreme special camshaft for racing purpose only, blackseries RAT cams, special with a dark mark reflects fury. 310 degrees duration, 7.6mm high Elevator pursuit despite a sharp acceleration should wear wide shoes Razzo IRC 166 for racing, and 3:00 final gear-plan diseting be raised yet again, the engine was out of breath ...The focus of our modification was done on the cylinder head to apply a lot of theories Graham Bell, H. Wawan combined experience when used to port the intake line on the Cylinder Head Car. Because Jupiter MX siamesed type port port where one lane will serve 2 valve walls we made thin and sharp as an ax. Among other benefits to the torrent mengkibaskan air-fuel. Expanded port side a little technic was applied, compared to the standard dilation ported only 1mm overalls.
Increasing the main force in the cylinder head passed through close seating, but it is not too extreme given the rider was still in junior high school and is a novice in the racing world, with a weight of just 42kg the compression ratio set at 13.3: 1 for the gas response is not too wild, still far from the target which will play at 15.5: 1, it aims to maintain engine durability of rationality that can be used to practice first. Later when the cylinder head is not suitable then we will order a new cylinder head with higher compression ratio and aluminum bronze valve seating.
