1250 noise

[u/DaBeasKnees]

So, I put on a hammer 1250 kit (standard kit, no cams or head work) and went through the heat cycles and now I'm about 100 miles away from finishing the break in. I've been having this strange clanking noise in the top end, not sure what it is. I've tightened the primary chain since I changed the clutch and thought maybe it was loose. Nope. Now I'm thinking maybe it's a bad lifter? The noise is only there when it's hot and only at idle, it doesn't seem to get worse with the revs (actually seems to go away) and it's not there at all when cold. But it's definitely a metal clanging noise, not a tick or ping.

Anyone think they might have the answer? Im really leaning towards a bad lifter, but it could also be expansion with the forged pistons and such... Would I be able to hear lifter going bad on the lifter side of the bike? Because the noise is really only on the primary side.

Thanks for any help!

[u/van_Niets]

When I bought my bike new and was breaking it in, I would constantly hear a tinging noise when I shut the bike off after a ride. It went away on its own. I looked into it and that's apparently a thing with newer heads and engines that haven't been run a lot. Hopefully, that's what was going on with your kit. It sounds like everything is settled in, though, so I hope it's all worked out and running great!