well , there is more to it , it has less weight ,it's less air resistant
cooling can be obtained bij drilling holes in de crankcase (in front of the variator) , of you can make a hole in the crankcase and attach a hose to is wich you can put in a place where it can get fresh air.
or like some guys do , a cooler from a computer
and there has to be a hole in the back , behind the Pulleys to let out the hot air en dust (from the V-belt)
verry nice indeed... one of the best projects for sure! but why are u dumping this scoot and gonna go on with a street magic?...and are u gonna use this engine or an other one?....