I have never bored or ported, I did a little case match. I am enjoying thinking about it but can't quite wrap my head around it fully. I am going to try to super stock a tomos. Maybe mess with a morini. I don't want to get too technical. I figure you probably want to work in 3rds. Like intake and exhaust port should be 1/3 diameter of the piston. I figure the spacing on the port map should be in thirds too. I guess it depends on timing? idk im thoroughly confused and it feels good.
btw my tomos goes 50.33333pie and its reliable.