ok well i run stock mod and ive herd you could port your stock carb the get a pit more air going true can anyone tell how or were to port the carb at? im realy confused pics would help to
I did a basic bore on mine, think l went to 12mm or 12.5mm (sorry thought l was in the crf50 section, same idea though) starts getting thin then, mine was just a circular l think if you want more oval you would get a larger area.
If you look through the carb from where the air goes in, to where it attaches to the manifold you see the venturi, that is the area you increase the size of.