And that righ cylinder always seems to run a bit rich anyway. Since that is the “rear” cylinder in a motorcycle i think it is possible there is something in the porting or manifold design to slightly enrichen that cylinder to help keep it cool since it sits normally in the heat shadow of the “front” (front) cylinder.

Just a random musing.

Last edited by LightSpeed; 20/05/21 12:31 AM.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)