Bore Up Jupiter / Vega Old Jupiter Z 115cc Piston Uses

its piston results

Pursuing the 115cc engine capacity in Yamaha Jupiter / Vega can use a standard piston Jupiter Z 100 Usually oversized bore up step is relatively easy and cheap. Os piston diameter of Jupiter Z 100 is 52 mm, while the diameter of the piston Jupiter / Vega standard is 49 mm long. Physically, pen piston and piston are the same ass. What is different is the height of the roof surface of the piston. Interestingly, the piston can turner for Jenong contrived to be racing pistons. For daily can drastically boost the motor power and the motor remains standard.
How to use pistons Jupiter in Jupiter / Vega long for daily are as follows:
1 lathe and formed part of the compression piston dome
The edge of the piston turner as far as 7 mm deep as 1.75 - 2 mm (1 - 1.5 mm for racing). This is so that the deck clereance awake 1 mm pistons and the block does not need to use an aluminum gasket.

standard piston turner Jenong

2 Make the piston dome angle
Jenong angle pistons made ​​free. In order to use premium and powerful, should be set 45 ° angle only. The compression ratio of about 9.5: 1, but this ratio should remain measured again because there is definitely at the other pistons.

Jenong angle 45 °