Does the 144cc need a different pipe if the port timing is kept relatively the same? (mid-high rpm roadrace).
I suppose what I am asking is: should the pipe be chosen based just the port timing/rpm range or is the extra 19cc enuf to enter into the pipe choice equation?
I suppose what I am asking is: should the pipe be chosen based just the port timing/rpm range or is the extra 19cc enuf to enter into the pipe choice equation?