Need help to identify this part

v8-914

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When I pulled off my clutch side cover, I found this laying in the bottom. Does anybody have an idea what it is? or where it came from?
 

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I don't know if the clutch works, It's a salvage motor that I am rebuilding
and YES!! I just went and checked the clutch rod and it has a matching end to it! Interesting as to how it escaped? This could explain why the motor was salvaged. I haven't found much else wrong with it except the ring gap is at the limits.
 
Nope, Mine is still intact.
Here's a pix of my Clutch rod end

OK, I have found another weird thing. It appears this engine was running without Crank bearing pins in place. Every one of them is either missing or appears to be broken off in the holes. Somebody had to have been into this engine before me. Pistons are 1st over, so yeah.

Interestingly, the bearings seem fine.
 

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It's some sort of pin that is not supposed to removed. If you look carefully at the OP's original pics, you can see that it has been "pulled through" whatever it was pinning, and is damaged.
What's unusual, is the hole in it. The shift shaft pivot pin, for example does not have that hole.
 
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Here's a pin with a hole in it to make peening easier. This one is for an XS650 front footpeg pivot. Obviously this one is too long, but your mystery part is pretty definitely a pivot pin. I just can't think of any other pivot pins on the clutch side.
 
I'm thinking that the spot or part it came from has been repaired or replaced, and you just found the broken part of it now. It certainly looks like one of the rivets from the shifter assembly. The only other rivets I'm aware of in that area are the ones on the back of the clutch basket, but I've never heard of one of them falling out. But anything is possible I guess, lol.

ClutchHubBack.jpg
 
I love the detective work - besides from all the suggestions I have none - but man would I like to know if you ever figure it out!
 
Whatever it is the part has obviously been replaced and that is the original part, or a part from something else, that has probably been rattling around in there since the cover was last off. What's curious is it is obviously a riveted pin, obvious by the slight hole in the end and signs of previous peening. The length is a bit on the short side, looks too short for the back of the clutch basket and also too short for the selector shaft. Perhaps a part from something else that has somehow wound up in there by accident. Whatever it is, if everything else behind the cover is in place, then it's a part for the unknown parts bin.
 
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Found this while picking through parts today. Jim got it right. This is the backside of a shift drum stopper lever assembly. The rivet has the tell-tale peening hole, as seen in the OP's original pics. Everything else is right too, such as rivet depth. The shift shaft rivet does not have a peening hole.

The question now, is how the OP's failed rivet failed. It would take a lot of force to pull that rivet out. I think it would be hard to do if you tried. In use, it seems like the forces on that rivet would be sideways, not axial.
 
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Found this while picking through parts today. Jim got it right. This is the backside of a shift drum stopper lever assembly. The rivet has the tell-tale peening hole, as seen in the OP's original pics. Everything else is right too, such as rivet depth. The shift shaft rivet does not have a peening hole.

The question now, is how the OP's failed rivet failed. It would take a lot of force to pull that rivet out. I think it would be hard to do if you tried. In use, it seems like the forces on that rivet would be sideways, not axial.

Properly done, I'd expect that rivet to last forever. I suspect it wasn't set just right at the factory.... just enough wiggle that it eventually worked it's way out.

That's the only scenario I can think of anyway.... it's pretty robust.
 
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