Stripping black finish off of 2017 engine case and cylinders

[pekingduck]

I would be very leery of any liquid/vapor or air blasting on any assembly. While vapor blasting glass beads supposedly does not impregnate in the surface like air-driven glass beads, I still wouldn't trust it. I have had many things bead blasted, sand blasted, soda blasted, where I put bolts to seal the threads, and there still has been grit inside the bolt holes.

People usually sandblast at 80-100 psi, and no tape will withstand that. Even making block-off plates and installing them with gaskets and sealant is risky. It doesn't take much grit to score a cylinder wall. Or to get past an oil seal, the grommets for the alternator/signal generator wires, or the rubber on the valve cover.

And curing powdercoat will require baking at about 375-400 degrees F., at the upper end of what some of the rubber and plastic parts may tolerate.

An alternative might be to simply paint the engine cases/cylinder/head silver, and maybe just powdercoat the engine covers (or replace with polished parts).