Thank You! It’s no good on the flange and thickness of the wall between the cylinder chambers. The motor had water in it for a very long time, previous owner not me… I pulled engine and took it all apart, sent head and block to machine shop. He had to bore it from .20 to .60. I had him look my manifold and riser and he said no good. Rusted to badAyuh,.... Welcome Aboard,.... Is yer's freeze cracked or broken,..??
Or is it just rusty, 'n filthy dirty,..??