Originally Posted by ilovechinagirls
Do not know if anyone else has done this, but 48cc is close to 3.0 CI and 66 cc is close to 4.0 CI. What does anyone think? Would it be alright to refer to them as 3 CI and 4 CI engines?
Houghmade called his 50cc 4 stroke HD Silent Gray Fellow "replica"2.9 CI
3" and 4" is a bit of an undersized embarrassment so 66 CC or the hyped up "80" is what most use.