New Werks TLB7 PRO

[MX_KEVIN]

If you do a google search on 2stroke port timing you can read all day on the subject. The engine builders have years experiance in what changing each port height does and thats why they get paid for what they do. The racer just knows what feels good to them or what they want out of a motor. A builder may trash a dozen or more motors trying to get that feel.
We can tell you which builder offers the best feel in our opinion but I dout anyone here can tell you how changing each port effects power output.