yamaha_snopro New member Joined Sep 8, 2005 Messages 200 Age 39 Location Northport, MI Oct 9, 2006 #1 im looking at maybe having some porting done to my 600 twin and i see alot of places that do cylinder porting also do case porting im wondering what it does and if it is worth doing in conjuntion this cylinder porting?
im looking at maybe having some porting done to my 600 twin and i see alot of places that do cylinder porting also do case porting im wondering what it does and if it is worth doing in conjuntion this cylinder porting?
