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ACF-50

ACF-50

Postby FoxProDenali [OP] » Jun 24 2020, 8:23pm

For those of you who've used this on rusted metal (frame, rockers, body panels, et), did you go after the existing rust with a wire brush first to knock as much as you can off and then spray it on?

From what I've seen/heard, it's kinda runny and soapy but loves to creep if you let it sit for a few days. Which might mean the above is a waste of time and metal....and it will just fall off anyway.

I'd rather not dig if I don't have to.

Any tips are welcome.
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Re: ACF-50

Postby 19trax95 » Jun 24 2020, 9:32pm

I would always get rid of as much rust as possible first.

I'm not sure how well it will work on treating rust that's already there. It works great to prevent it though.
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Re: ACF-50

Postby ferraiolo1 » Jun 25 2020, 12:17am

Yeah it only treats mild corrosion and stops further corrosion. If it’s bad rust you’re better off getting as much off as you can then treating with por15. THEN coating that with acf


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Re: ACF-50

Postby Larry-Cleveland » Jun 25 2020, 2:22am

Everything I own has rust! I think it may be on my back too :)

I have had VERY GOOD results with Zero Rust about $75 a gallon. I have tested almost every product and this one is a winner. I use to be a Por-15 man back in the day too.
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Re: ACF-50

Postby FoxProDenali [OP] » Jun 25 2020, 3:48am

I have POR-15 and used it on the bottom of my doors 2 years ago. It just fell off after about a year. No match for the yearly salt bath and the pressure washer.

I use lots of Fluid Film. I even aggressively rub it in to force it to bond deeper rather than just spraying it on. Yeah, so....meh.

The ACF will mainly go in/on the rockers to prevent further damage. No one does rudimentary tests on rusted metal cause how can you say it stops rust on rust?
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Re: ACF-50

Postby ricka182 » Jun 25 2020, 12:18pm

Stopping rust with any paint isn't a scam, but it's pretty close IMO. You just need to have the right product for the best results. As stated, ACF-50 isn't going to fix, but it will help prevent further damage.

If you really want to stop the rust, aside from totally cutting it out...which if you have holes or weakened metal, that must be cut out and replaced...otherwise, sand it down to remove as much loose as you can, clean it up all around, at least 2-3" beyond any visible rust lines. Obviously on the inside, not much you can do.

Paint wise, if you wanted to go that route and get a little repair in, you could use a high-zinc/cold galvanized paint. That's what is used on something like a chain link fence, et al. There are also others like POR-15, KBS Rust Stop, Corroseal, etc.. Most of those are a derivative of high-zinc formulation. Permatex also has a product, not sure on the zinc content, but it has tannic acid, which makes the metal more stable, and also has a chemically treated primer in the mix.

For something like inside a rocker, it's rusted and you probably have flakes you can't remove. You could try an internal frame paint, Eastwood makes one. It goes in as a very fine mist to get into every little nook and cranny, so to speak...but it won't necessarily stop active rust, but may slow it down.

If I do my rockers, again, I'm likely going to have to cut and weld in new panels, inner and outer. I'm delaying and debating, but my AMP steps rely on the rockers to be strong to some degree, and they are ok now, but I can see where rust is creeping closer and closer...if that inner edge of the rocker gets weak, those steps could lose stability, although they are still firmly bolted in higher up where there is no rust in that area, at least not very visible..

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Re: ACF-50

Postby ferraiolo1 » Jun 25 2020, 12:56pm

Yeah if the rust is that bad already nothing to can really do other than cut it all out. Or just buy new doors.


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