Fair enough. And if you don't remove the sand, it's a really bad thing. I don't know of a better way to get rid of 50 years of crud. But, nothing is left to chance. And that's probably where I need to explain further. I blow everything off with 110 pounds of pressure, then use 400 grit paper on the flat surfaces to remove any pits created by the blasting, another round of air, and then, douse everything in WD-40 cleaning off any residue with paper towels before putting it all together.
Would that work for you? It's what I did on not just this engine, but every engine I have done over the years. I do this same procedure on ALL internal engine parts. But you wont find one grain of sand anywhere when its done. It's either that, or have all of this residual crud on everything that you cant get to with a wire brush. Please argue the point if you still disagree with the idea. BUT.. you have to come up with an alternative that will ensure there is no residue anywhere that is just as dangerous.
