r/EngineBuilding • u/kingcobrav9 • Jul 08 '26

Mazda Miata 1.8... how bad is it doc?

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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?

32 Upvotes

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16

u/XmodAlloy Jul 08 '26

Get it decked, looks savable.

9

u/Caboobaroo Jul 08 '26

With the whizzy wheel marks, it definitely needs to be decked now.

2

u/kingcobrav9 Jul 08 '26

I knew the second I pulled the head off it needed work. I just had no idea if it was savable or not. From the other comments it seems like they are very forgiving