Zongshen 200GY-2: Engine Rebuild at 51,687 Miles

[SpudRider]

Originally Posted by wilserchinarider

Spud, I am intrigued w/ this photo, and find it surprising the Zong was running w/ such a worn rocker?

Prior to the rebuild, did you notice constant valve adjustments were required for the exhaust valve to compensate for the wear that was occurring? Or do you think this happened over many miles and was just slowly compensated for in your routine valve adjustments?...

My Zong ran very well with the worn, exhaust valve rocker. The exhaust valve held its clearance well. I did not have any indications anything was wrong until I noticed a concerning noise emanating from the cylinder head.

Incidentally, I will restate, this was a Yamaha rocker which came inside the XT200 cylinder head I installed.

Spud