a 70cc will keep up on take off but not top end speed if i put a 54mm crank and malossi 172 kit and 28m carb a 70cc would not have a chance and its not a hard job u just have to have ure head screwed on and take time on it
yh all about patience no way would a 70 keep up with a 172.. 70's are good but so unreliable.. well mine has been anyway aha 125 time!!
cheers mate, i saw a video , shiny red fitting the crank, on youtube i just wondering if u just heat the cups? my mates are telling me you have to freeze the bearings??
all i did was get a hot air gone and tapped the bearing in with a rubber malett but u can do it a few ways lol
u dont need to toque em down mate u just need to nip em up really just dont go mad on em or they snap