Hi guys, i have showed this to a few other people and no one can identify it. i found it in the oil pan of my d series last week. not sure if it might have been introduced to my motor from a foreign source like maybe it was in a funnel i used or something. as you can see it looks like the end on the left is jagged like it was broken off while the end on the right looks nice and flat like it was never a true circle. my car runs fine and has had many hours of driving both high and low rpm since i found it, i drove a 4 hour trip and also had around 20 dyno pulls on the car since then. so if it is from my car its not affecting it yet. first thought was something for the wrist pin , but after showing it to several honda builders no one thought it could be that. could it be from anything in the head or vtec? or is it probably a foreign item?