What series pilot??

Hey guys, I know when you start a new thread, you suppose to search first. I did this and I found my answer, unfortunately I forgot it and can't find it again. The question is what series pilot is in the FCR Keihin 39. I believe it is a 21 series. Also since I'm being lazy/efficient can anyone tell me the stock needle position. Just bought a 450 and who ever jetted it has it runnin 178 main at slightly above sea level! Therefore I have reason to believe the rest of the carb is screwy. Thanks for yalls time

What year is the bike?

Yes it is a series 21 pilot jet.

178 sounds a bit oversized.....

Check the Jetting Data base for some help with specific jets to use. There is tons of great info in the link below.

http://www.thumpertalk.com/forum/showthread.php?t=694921

Its an 06. I agree it is really rich. I am going to go with a 48 pilot and 168 main. Dont know about needle clip yet. Picked the bike up bout a month ago.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now