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Restoration / Re: Rust on exhaust manifolds
« on: June 23, 2022, 07:17:58 PM »Muriatic acid is a diluted form of hydrochloric acid, but still pretty nasty stuff. Evaporust is much less caustic and easier to work with, and eventually dispose of. You can get creative and use a heavy duty plastic bag and ties for large parts, to minimize the amount of Evaporust needed.
Electrolysis is another option for rust removal, probably cheaper but takes a little longer and some additional supplies. I've used this on pieces with real heavy rust.
http://antique-engines.com/electrol.asp
I have a plastic 55gal drum set up for this purpose using this method. It works great!! I've used it on a lot of Lodge cast iron pots and pans.