Well a coworker has a 2004 Subaru Baja. He said the engine started to knock a crap ton, so he turned it off. I pulled the motor last night and took off the heads, sure enouhg Piston #3's wrist pin is slapping around like crazy. Popped off the oil pan found crap tons of Al filings, felt like 80 grit sandpaper.
Pulled off one head's cam, the bearing surface nearest the cam sproket looks shinny like all the cam's I've serviced, but as you go back they get more and more dull and scratched. I'll see if I can post pictures.
Looking at the cam itself, same. The rear most one looks very dull and ruff.
Should I tell him to find a complete engine? If it were me I'd by the lower and buff out the cams, put it back together and watch it. But this poor guy has NO car experiance nor tools. Doing this as a favor for him.
Ones in the rear...
One near the cam...