piston and jetting

[robert goyeau]

iam puting a new piston in it just the next size up piston from stock but with 11:1 compressin do i have to change the jetting if so wut size its stock everything and when i put a white brothers e seris on wut size should it be

ya u should...with faster compression u will be getting a lot more gas a lot quicker

[robert goyeau]

how do u figure out wut size u need

start at around 40 pilot jet and 150 main...then if the low end doesnt feel like it has enough gas go up and if it has too much go down on the pilot jet...that applys to the top end also...but this time u r changing the main jet