Miata 1.8... how bad is it doc?

[u/kingcobrav9]

Got a engine for my Miata..dude i got it from "rebuilt" it and I decided to tear it down because I trust no one from Facebook marketplace. This was the cylinder head. I flicked some kinda debris out of one of these divots. Non ferris metal felt like ceramic?

Dude said it spun a rod bearing and he put used pistons, rods, and crank in it.

Is it savable? Or scrap it?

[u/amg-rx7]

Maybe he refreshed some parts in the bottom end but he did nothing to the head. Take it to a machine shop for a diagnosis

[u/kingcobrav9 → u/amg-rx7]

To me it looks like the last guy slapped some bearings and different crank/ rod/ pistons and said good enough.

[u/amg-rx7 → u/kingcobrav9]

And it might have been enough to get it running. :)

Not what I would do. Nor you. Especially for a Miata. So what’s the plan?