So I'm about to put a new carb on the bat (M48) and was thinking about the exhaust and milling the head to gain more power. I'm still sorta new to all this but I have a buddy that builds motorcycles and he has access to welder that we can cut up an exhaust and weld on the header pipe I have now. I was looking at this in the wiki ( "http://www.mopedarmy.com/wiki/Head_milling":url ) and was wondering if i should go ahead and do it and what kind of top speed i can gain using a Puch performance pipe after we modify it. I'm figuring with the pipe and new carb (Dellorto 14:12) i can get a higher top speed of 30-35, maybe more.
If I mill the head with the carb and exhaust combo would I be able to hit 35-40 or more?
Dunno, like i said I'm still learning all this and any advice would be helpful.