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The side plates (iron) have some kind of treatment that penetrates them shallowly. At one time shops still were able to retreat the ground ones- it was a gas of some sort mixed with ammonia?M Sent from my iPad On Aug 8, 2020, at 12:28 AM, William Jepson wrjjrs@gmail.com <flyrotary@lancaironline.net> wrote:
Ernest, You are correct. The housings are porous chrome. Don’t think Mazda invented nikasil but I’m sure they tested it. I know there were several companies testing it or running it in the Early 70’s. Bill I was looking into nikasil coatings and was surprised to read that it was originally developed by Mazda for the rotary engines. I thought the rotor housings were chrome plated. Is it really nikasil instead?
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