650 Freestyle porting?

[uncleuno]

Does anybody know anyone that does freestyle porting on kawi 650s or bottom end power porting? My motor now rips hard finally but its all up top.

 

[Crab]

Dont waste your time, get a 750 small pin

 

[uncleuno]

I knew that was coming. I've just a couple of 650 cylinders laying around.

 

[WFO Speedracer]

I knew that was coming. I've just a couple of 650 cylinders laying around.

I can give you some specs if you want to mod the cylinder yourself,basically its just an exhaust port mod.

 

[uncleuno]

send them to me

 

[3wheelerdude]

Id love to have a copy of this too.

 

[WFO Speedracer]

Id love to have a copy of this too.

Basically you raise the exhaust port 1mm and keep the stock radius,port should be 52mm wide,clean up the transfers and knife edge the dividers but do not enlarge them,there are numerous things you can do on the intake side but that is case porting,not cylinder porting.Porting is good for about 5100-5400 rpms

 

[uncleuno]

Thank you very much we'll try it this winter