I picked up a 98 altima the other day with a locked up engine. I thought the timing chain had snapped and was stuck in the cover. I pulled the pan down and found these copper pieces in there and a lot of plastic (guide). After dissasembling pretty much the entire lower engine, I found a rod bearing had spun and siezed, and snapped the guide. Any idea where these might have come from? The largest piece is 1". They almost look like a copper o ring that have been hammered on. I am guessing the flattened pieces are from the rod bearing.[ATTACH=CONFIG]149363[/ATTACH]

Any help is appreciated.