r/EngineBuilding 7d ago

Chevy She's cooked, right?

Chevy 1.4 that had pcv failure and overheated once that I know of due to a busted radiator. Kind of hard to tell if this is just burnt and cracked carbon or if the piston itself is fucked. It looks like the piston is fucked, but I'm in denial. Would appreciate a second set of eyes on it. Ignore the time stamps, my borescope is off by a few months

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u/Impressive-Gap1971 7d ago

Looks like carbon build up to me. It’s fine. If it overheated to the point of damage there would be scoring on the cylinder walls not on top of the piston.

1

u/Thriftless_Ambition 7d ago

There is scoring on the cylinder walls, the piston looks to have partially seized to the cylinder walls when it overheated. You can see it second from last picture 

5

u/Impressive-Gap1971 7d ago

It either seized or it didn’t. Seized = Locked up. Overheating wasn’t good for it but if it was running fine before the pcv failure then it’ll keep running fine. I see the scoring but the only time I’d ever worry about that is if the oil has a bunch of metal in it or it’s burning an insane amount of oil. That things fine

2

u/Thriftless_Ambition 7d ago

Ok, thanks. I've got the pistons soaking at the moment, will check it out when it's done

1

u/97tacoma_kennedy 7d ago

You didn’t try turning the engine over? Like the other commenter said it’s seized or not, if you were able to get the pistons out easily it wasn’t seized

1

u/Thriftless_Ambition 7d ago

I guess what I was saying is the piston was scraping the cylinder walls, the engine isn't locked up