u/nixxxx_

Hello everyone, i recently got my hands on my grandpas old trial, its a 1989 beta 50cc aircooled and i’m looking to get some more power off of it. I got zero experience with 2 strokes but i have quite a bit of basic knowledge and id say i’m mechanically inclined.
Today i tore the carb apart to clean it and checked the reed valves, everything seems pretty healthy.
Can i just slap a 17.5mm carb (currently 12mm) and see decent high rpm gains or will it just be worse overall? do i risk overheating? Thanks for the advice!

Noticed while doing some maintenance, is this much play normal or could it cause leaks? the heat shield on the right appears to have black soot on it so that’s why i’m asking, thanks for your time!