tank rust

Has anyone tried the new WD-40 Rust remover soak? I saw it on tv today, They said it wont hurt paint or rubber. Looks like it would work good.

i went and bought some muratic acid today at home depot but damn i didnt know that phosphoric acid was so hard to find. lowes doesnt carry it and at home depot you can order it online but not in the store.

KZCSI wrote:

gumby prichard wrote:

gengomerpyle wrote: i took the tank and fender down yesterday to have the paint blasted off of it and i was talking to the company that did the work. they were saying to use muriatic acid with a chain and shake the crap out of it, and then use diluted phosphoric acid to neutralize it and it shouldnt get flash rust. doesnt that sound like it should work? the flash rust is what im worried about once its done.

I used to work at lowes(not that that provides much experience, but we sold both phosphoric acid based concrete etcher and muratic acid), and worked with a guy who knew chemicals wuite well, from what i have been told it is very dangerous to mix phosphoric acid and muratic acid as they are on opposite ends of the ph scale. Just a heads up.

:huh: :huh: :huh:

I don't believe anybody suggested mixing the two acids. Which by the way are both on the acid (LOWER) end of the PH scale.

The muriatic acid is used first to remove the heavy rust and then, after rinsing, the phosphoric acid is used to leave the steel coated with a very thin layer of iron phosphate, which is somewhat rust resistant.

Bill

i wonder if anyone has tried a wire brush.

Powerstroke_fan wrote: Has anyone tried the new WD-40 Rust remover soak? I saw it on tv today, They said it wont hurt paint or rubber. Looks like it would work good.

I saw that also...removes rust...wont hurt paint, plastic or rubber....non toxic sounds like the new goto material to me...

its a tad bit hard to wire brush the inside of gas tank :blink:

donthaveakawman wrote: i wonder if anyone has tried a wire brush.

gengomerpyle wrote: its a tad bit hard to wire brush the inside of gas tank :blink:

donthaveakawman wrote: i wonder if anyone has tried a wire brush.

It only works when the tank reaks of gasoline fumes...you wont have to worry about rust anymore!!!! :woohoo: :woohoo: :woohoo: :woohoo:

I work in a radiator shop and we clean a lot of fuel tanks. We sandblast the inside and then coat the inside with Redcoat made by Damon Products. You can only buy it at some radiator shops. It can not be shipped because it is very flammable.This is the only way to prevent rust that we have found.

Z Parts wrote: I work in a radiator shop and we clean a lot of fuel tanks. We sandblast the inside and then coat the inside with Redcoat made by Damon Products. You can only buy it at some radiator shops. It can not be shipped because it is very flammable.This is the only way to prevent rust that we have found.

True words! However we're not looking to prevent rust. We know that a regularly used bike doesn't accumulate rust! I'm not much of an authentic only restorer, but believe me, an epoxy coated tank earns demerits when values are determined.

Clean the tank with muriatic acid coat the metal with WD40 while it's still wet and force dry it. Oh, one more thing, ride the damn thing!

Bill

KZCSI wrote:

Z Parts wrote: I work in a radiator shop and we clean a lot of fuel tanks. We sandblast the inside and then coat the inside with Redcoat made by Damon Products. You can only buy it at some radiator shops. It can not be shipped because it is very flammable.This is the only way to prevent rust that we have found.

True words! However we're not looking to prevent rust. We know that a regularly used bike doesn't accumulate rust! I'm not much of an authentic only restorer, but believe me, an epoxy coated tank earns demerits when values are determined.

Clean the tank with muriatic acid coat the metal with WD40 while it's still wet and force dry it. Oh, one more thing, ride the damn thing!

Bill

+1. Keep fresh fuel in the tank (don't let it sit weeks on end near empty) and ride and you shouldn't have rust formation. Ed

ANYONE TRIED VINEGAR N BAKING SODA HEAR SOMEONE TALKING ABOUT IT BUT U KNOW WHAT THEY SAY TALK IS CHEAP

i remember seeing a post somewhere about it but i couldnt find it again.


i just finished using the muratic acid and it took the surface rust off almost instantly when i poured it in tank. it leak some from the duct tape and gas cap and it ate the phosphoric finish the sand blasting shop put on the outside and it flashed rusted pretty fast so i had to recoat the outside. im glad the rust wasnt anything more then surface rust. i think once the outside dries and i coat the inside i should be good to go. im planning on dropping all the body parts off later today or tomorrow to the paint shop and they will start painting it .

jeff12345 wrote: ANYONE TRIED VINEGAR N BAKING SODA HEAR SOMEONE TALKING ABOUT IT BUT U KNOW WHAT THEY SAY TALK IS CHEAP

If I remember correctly, NAPA sells "Aluminum Brightener" in quart and gallon sizes. It contains a fair bit of phosphoric acid.