Derusting Engine Blocks

Posted by Larry on May 02, 1998 at 09:29:40

I have a block that was very rusted. I took it to my machine shop and asked them to check it out. They did and went ahead and bored it for oversized pistons so they would know if the bore would clean up. My guestion is how do I clean all the rust out of the water jackets and not hurt the machine work? It's real rusty in there.
Thanks Larry