flyinr1

right on, what mods?

you may be able to find new cylinder head

graves, or two brothers

r6 and r1 have had problems with the exup valves, and they will make a rattle noise, many have tore the engine down to the crank looking for a main or rod bearing problem, or a valve tapping a piston, but usually is not the problem, when the bike runs strong, it is probally the exup valve in the exhaust, this is a valve that opens/closes for proper back pressure, rattle will probally be noticed more a low rpms, or idle, while the valve is sopposed to be closed, anyways just put a pry bar on the exhaust where the 4 goes into one apply a little pressure and see if noise stops, if so its your exup valve. you do have oil in the bike right? you should not have any rattle noise on a bike this new. hope this helps you, rember push right lean right go right. now get out there and break some speed limits.

anyone have any knowledge with porting and poslishing head on 2000 r1, is it worth the expense, how much horsepower can i expect to gain? any got any suggestions, thanks,