my 70cc polini sport is only going 50 mph. on the inside of my cylinder head , once on of the reed block screws fell out and got jammed between the piston and cylinder head and now the head has a circle dent about 1mm deep , and so does the piston , on the head its right on the edge , could air be escaping out the seal? also since that day its been making a nocking sound , could it be loosing air , and could that be why its only going 50mph , quite slow for a 70cc, bike details , polini sport 70cc , polini superspeed variator , 17.5 carb with 80 jet , technigas exhaust , kevlar belt thanks
ok , im gunna get a water cooled 2day and convert to water cooled , and see if that will make it faster
