One white valve

[Robliepse]

Yes sir, thanks for everyone’s help

 

[Fran Blacker]

With care you can by taping off where you don't want it. You have 2 suspect areas that are small.

 

[dvw]

Usually there is coolant in the cylinder it will be washed clean. There is a clean area on the piston shown. Are there any other pistons clean in that spot? I have not seen a crack in the deck. Cylinder walls (usually easy to see) outside between the freeze plugs as well. Should’ve aired up each cylinder with the radiator cap off before it was taken apart.
Doug