Re: Block cleaning
In my reading, muriatic acid is never a good thing for rust removal. The damage can continue long after you think it looks pretty.
I did find that electrolytic rust removal will remove the left overs from the acid in my reading.
I have found the good old wires and manual removal of the rust to be a great way to get rid of all the stuff in the block. Keep in mind not all what you find is rust. I was removing some casting sand too. Plus not all the flaky stuff, what you really need to remove, will come out with chemicals alone.
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