co worker found this in the yard at work

[m in sc]

 

'not mine'

[SoCal250]

Somebody had some engine problems

[irk_miller]

I'm rebuilding a "free" '87 Honda XL250R that had intake valves that looked like that.  So bad I had to sacrifice a guide.

[pidjones]

They've been used as lightweight hitch pins for decades.

[85RZwade]

It's four-stroke related

[kramdua]

that is a brake shoe hold down stud for a drum brake car or truck.

[m in sc]

nah, its def a valve.

[kramdua]

yes it's a valve but i felt pretty smart there for a minute.

[1976RD400C]

I had a job working at a machine shop, many years ago, doing valve jobs. Some of the heads would come in that were run for months, skipping away, after burning a valve and they would have a big pie slice shape gone out of them.

[kramdua]

yes the exhaust valves cooked.