Is there any chemicals or over-the-counter products that easily and effectively removes surface rust from exhaust pipes?
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Re: Rusty Exhaust Pipes
L Taylor-----
Acid based metal cleaners will remove the rust. Jasco is one brand that I've used successfully. Or, swimming pool muriatic acid(commercial grade, dilute hydrochloric acid) will work. The real problem is keeping the rust from reforming. With these mild carbon steel pipes, the rust will begin to reform as soon as the part is dry from the chemical cleaning. You can oil it immediately to prevent this but, on the car, the oil will burn off almost immediately when you start the engine. So, cleaning the rust off is easy; keeping it off is EXTREMELY difficult.In Appreciation of John Hinckley -
Re: Rusty Exhaust Pipes
If you start out with clean new pipes or manifolds, Armor-All will provide surprisingly good corrosion protection as long as you don't drive in the rain and reapply it periodically, especially if the pipes or manifolds get wet. Whatever the active ingredient in Armor-All (silicone?), it seems to have extremely good temperature resistance. It doesn't burn and leave an oxidized film of goo like petroleum based chemicals.
DukeComment
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Re: Rusty Exhaust Pipes
I have done a process on my 65 pipes that lasted several years. I did a sandblast with a real fine sand to clean up the pipes. then I used a treatment (phosphoric acid contents) called OSPHO that turns the rust to phosphoric oxide i think. Anyway it stops the rust down in the small pits from rusting again. I then used VHT high temperature clear on then. They stayed rust free for several years. I got the VHT at a local speed auto paint shop> a bit of work but it lasted a long time. On the exhaust manifolds and ehaust pipes I used VHT's very high temperature clear spray. the heat from the engine cured the high temp. Good luckComment
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