Geoff Thomas
09-01-2003, 10:11 AM
does anyone that has 250R with some kind of high rev porting know what their exhaust and transfer port timeing is? How many degrees is the exhaust and transfer ports open? My bike has been bored .120 over and has a paul turner hi rev pipe with 39mm Mikuni carb. I'm wanting to do a bit more tweeking on it before I head to the dunes in late Sept. and have done the current porting myself. It is at about 190 degrees right now and I am thinking of raiseing the exhaust port a little more. Thanks for any help.