#engine noise

Good morning friends, my motorcycle has a noise that I would like you to help me identify, it arose after the engine was assembled, when checking the tolerance I did not see any worrying play in either the cranks or the tread, when assembling I changed rings, chain guides, and the valves were...

Hi Forum members! If you have 8 seconds can you listen to this engine noise and lmk if you have any ideas on what might be the cause? It appeared suddenly on a ride. I then changed the oil, and adjusted cam chAin tensioner but the noise is the same. What I did before the noise appeared: new...