Delly 25 or 28mm ??

[iaingb]

thinking of putting a Del'Orto 25 or 28mm on my GP200 engine,it's a SIL stage four,any suggestions or tips as to which to go for and what jetting ? it's got a Sterling pipe on it at the moment,but will probably change up to a JL in the future.[*]

[sean brady scooters]

30mm delly

[iaingb]

Thanks Sean,but what jetting,the engine has only done 500 miles so far so still a bit of running in to do

[sean brady scooters]

if you keep the sterling pipe i can give you some jetting details but if changing to a jl3 they may vary slightly...
also obviously,jetting specs depend on using filters or not ,and types...or running open /with or without hole in panel.........?