HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
Norman

stock jetting

4 posts in this topic

Can anyone tell me what the stock jetting is for a 01 XR650R, I picked it up used and I think its jetted for high elevation and Im at sea level.

Thanks,

Norman

Share this post


Link to post
Share on other sites

I believe stock jetting is a 125 main jet and a 65 pilot jet. i can confirm this in my factory manual if needed.

Share this post


Link to post
Share on other sites

That's correct, stock main jet 125, pilot 65, needle set second from the top. THIS IS WAY TOO LEAN for sea level, and the bike should be completely and properly uncorked before riding it.

Replace the main jet with a 175, pilot to 68 or 70, get the B3E needle and set it in the middle position (3rd clip position). Remove the airbox back baffle plate, and the snorkel. Replace the carb intake boot with the 40mm unit. Replace the stock exhaust tip with the 40mm HRC unit.

If you do all of those steps, the bike will run as it was intended to.

Running the bike in it's stock condition is a waste, since it won't have any power, and it will overheat too easily. Stock, the bike feels just a little bit stronger than an XR400, but not by much. Uncorked/re-jetted, the thing is a monster! XR650sm.jpg

Share this post


Link to post
Share on other sites

Well thats whats in it I just thought that was way too lean for a 650, time to make some changes.

Thanks,

Norman

Share this post


Link to post
Share on other sites

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
Sign in to follow this  
Followers 0