I was replacing the oil today when I noticed torn metal inside the engine -- never a good sign. This is a 2005 Pontiac Vibe 1ZZ-FE, on which there is a lot of documentation but none proved useful to an amateur such as myself.
Here are the pics:
It doesn't seem to manifest itself in any way, no smoke, sputtering, etc, but I'd hate to regret ignoring this later on.
What part do you think this is and how severe/urgent does it seem?