318 Exhaust valve differences

I have fine and coarse compound.

Just use the fine?

I use to have blueing dye. I'll have to look around for it or buy some more.

Thanks again for all the help guys.

It takes a message board to build an engine. Lol


I'd start with the fine and if they don't clean up you can use the coarse. I'd finish with the fine if you have to use the coarse.