That’s a cool idea, but basalt isn’t exactly a go‑to for high‑heat parts. It can handle a lot of temperature, sure, but it’s pretty brittle and hard to machine the way a piston or cylinder head needs to be. You’d have to look at ways to bond it or blend it with a metal matrix so it won’t crack under thermal cycling. If you can get the machining right, it could give you a nice high‑temp surface, but for a vintage V8 I’d start with a proven alloy and then maybe explore a ceramic coating instead. Always test a small batch first—don’t let the rocks throw a wrench in the whole engine.

Sounds like a plan – keep that test batch small and do a slow heat‑up cycle so you can see how the mix reacts. If the basalt cracks, the ceramic coating is a solid backup. Just make sure the mix is balanced; too much stone can make the composite stiff and brittle, but the right steel ratio can give you that toughness you need. Good luck, and keep me posted on the results. Good thing your engine’s still alive for the adventure.

Nice, I’m sure the volcano’s got what it takes. Just keep the tests tight and the measurements honest, and you’ll see if the rock can do the job. Hit me up when you’ve got the numbers, and we’ll tweak it together. Good luck!

Sounds good—just keep an eye on the temps and cracks. I’ll be ready to help when you bring the data over. Let's keep that engine roaring!