Would boring out a carb have any performance benefit, top end or low end? You would obviously have to rejet. I'm running a dellorto sha 14mm clone, just curious if this would have any benefits boring it out, or if it's even possible.
unless you're screaming 8000+ rpm, racing, have a pipe n gearing, a 16mm carb is all you need and it's good for all the other upgrades youd do in the future, tho for spec on tuning across the board, SHA clones kinda are lacking. I have one and it's ok. I took it out to 15mm bcs I run a 48cc and trying boost only low end so I keep everything a little smaller than ppl with 66cc's that want to go 45mph+
since you have a reed, i would go for a 18mm mikuni carb (clones if you low on $)
yes its possible to bore the carb, but dont go to far. i would start at 15mm and work your way up.
its risky, but it would be worth it!
also, you gain top end but loss some low end. (try blowing a piece of paper normally, then do it with your mouth wide open, thats like boring the carb out)
boring is a touchy subject, i would go on youtube and look up how tos, and go from there