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Technical Rust conversion coating

Discussion in 'The Hokey Ass Message Board' started by TudorTony, Nov 22, 2019.

  1. TudorTony
    Joined: Jun 2, 2013
    Posts: 224

    TudorTony
    Member
    from NJ

    Got a vehicle I just want to use as a worker. Don’t wanna put a lot into it. Got it running good and body not too bad but tuning the corner from surface rust to medium serious rust underneath. Structurally ok but dont wanna let rust underneath get worse. There’s so many supposed rust conversion products out there ur head hurts trying to figure out which actually works? I’ve seen a few that claim to convert rust to a blackish coating suitable as base for paint or undercoat? Thoughts on what the best stuff is?
     
  2. Blues4U
    Joined: Oct 1, 2015
    Posts: 6,100

    Blues4U
    Member
    from So Cal

    Not really a converter, I believe it's more like an encapsulater. But it works very well to stop rust and provide a durable paintable surface.
    [​IMG]
     
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  3. alanp561
    Joined: Oct 1, 2017
    Posts: 1,994

    alanp561
    ALLIANCE MEMBER

    ^^^^^^^I've used it on car frames and bodies with excellent results. Brushing it on works really well. Read the directions carefully as you need to get the primer you're going to use for your color coat on while the POR 15 is tacky.
     
  4. anthony myrick
    Joined: Sep 4, 2009
    Posts: 8,961

    anthony myrick
    Member

    I used some rusty metal primer. The generic rustoleum stuff on my bus
    Cleaned and wire brushed.
    Applied the primer and let it dry overnight. Shot some cheap chassis black on it. Still holding up good.
     
    dana barlow likes this.

  5. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    I wrote that technique 30 years ago.
     
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  6. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member

    I'm also from the Northeast salt belt. I know exactly what you describe as medium/serious rust, which is a scaly mess. You would have to needle scale all the scaling off if you wanted to use the rust paints/convertors.

    Guys from down south and out west don't have that extreme scaling, so their results won't have the results here.

    Oiling is the only thing that will slow it down if it is layered scaling. If you coat over the scale, the rusting keeps going, if not worse due to trapping salts and moisture.
     
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  7. 19Fordy
    Joined: May 17, 2003
    Posts: 7,383

    19Fordy
    Member

    dana barlow likes this.
  8. tubman
    Joined: May 16, 2007
    Posts: 5,909

    tubman
    ALLIANCE MEMBER

    I have a 1951 Ford that had moderate rust. In 1987, I got it up in the air about 3 feet and laid under it all winter with a sandblaster (the suspension was removed). I didn't get it down to bare shiny metal, but did remove all the loose stuff. After I finished a section, I used POR-15 to paint it. It's still good.
     
  9. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    Here is a little video you might enjoy
     
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  10. Vics stuff
    Joined: May 24, 2014
    Posts: 383

    Vics stuff
    Member

    Great test for coatings.
    Vic
     
  11. Flathead Dave
    Joined: Mar 21, 2014
    Posts: 3,510

    Flathead Dave
    ALLIANCE MEMBER
    from So. Cal.

    I wish that I could remember the name of the stuff, rust encapsulater, at Pep Boy's. It's black in an aerosol can. I have it on my '27 Coupe. Works very well with no rust coming through or spreading for 7 years now.
     
  12. TudorTony
    Joined: Jun 2, 2013
    Posts: 224

    TudorTony
    Member
    from NJ

    i like the Carbibles rating a bunch. Their #1 is Corroseal looks right & pretty inexpensive for coverage. Permatex stuff looks great but expensive to to entire underside.
     
    Last edited: Nov 22, 2019
  13. The LocTite stuff is a mess, works well in converting rust to iron.
    The Rustoleum spray seems to work, time will tell
     
  14. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,598

    Elcohaulic
    Member

    Spray grease, look it up on google.. The Luberplate stuff is black, it hardens and it kills rust. Nothing kills rust like oil.. This is the first coat, you can see the virgin rusted steel thru the frame holes.. The rusted steel sucked this grease right up.. Funny, after I did this to my car, it seemed to drive better and went down the road more quietly, probably just wishful thinking..

    If you go this route keep it away from rubber by spraying the rubber down first with silicon spray..
     

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    Last edited: Nov 23, 2019
  15. Fortunateson
    Joined: Apr 30, 2012
    Posts: 4,382

    Fortunateson
    Member

    I have a couple of never opened quarts of Corroless I got years back. I presume th same company that makes Corroseal. Eastwood use to sell Corroless and then quit. Has anyone here had any dealings with Corroless? At the time it was supposed to be the #1 product to reason I haven't used it yet is that I like to get rid of rust by blasting.

    For inside frames, rocker panels, you can't beat the Waxoyl spray oil/wax products!
     
  16. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    You can convert rust all you like. What you put over it to prevent returning is more important. Most of you buy black moisture cured urethane and think it's going to seal the rust forever. That's what I thought years ago. Let's go into the paint business. A permanent type bridge primer is developed by the Mobay chemical company that is moisture cured and is loaded with aluminum flake. The aluminum flake in layers cuts off the oxygen in the resin blocks the moisture. It will actually sucks the moisture out of the steel. It's the coatings industry standard and most anti-corrosive primer there is. It sunlight stable, sandable, and dries toothy for paint adhesion

    Now the clear moisture cured urethane is used to seal concrete and wood floors it allows it to breathe. So now these guys are painting the bottoms of their cars they want black. So now will substitute black pigment to the clear making it the most powerful rust paint since the dawn of mankind. One man started this 30 years ago and the rest of the companies followed.
     
  17. Blue One
    Joined: Feb 6, 2010
    Posts: 11,191

    Blue One
    ALLIANCE MEMBER
    from Alberta

    Last edited: Nov 22, 2019
  18. TudorTony
    Joined: Jun 2, 2013
    Posts: 224

    TudorTony
    Member
    from NJ

    Is this the Grease Spray? https://www.uline.com/Product/Detai...MI2ZOnvLL_5QIVApSzCh06TAGbEAQYASABEgJ7svD_BwE
     
  19. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    Spray grease is infused with calcium sulfonate. This is your active ingredient in undercoating, wax oil treatments, and cavity waxes. Many companies offer this. Spray cans work nice in getting the hard-to-reach areas like rockers.It should be applied every year
     
  20. Fortunateson
    Joined: Apr 30, 2012
    Posts: 4,382

    Fortunateson
    Member

    Pats55, any comment on Corroless.
     
  21. Use the POR15 METAL PREP. works amazing 20190805_125706.jpg 20190805_125706.jpg 20190805_125714.jpg
     
  22. coreythompsonhm
    Joined: Jul 16, 2012
    Posts: 68

    coreythompsonhm
    Member

    Is the por15 metal prep the part that actually does the rust conversion?
     
  23. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    This is an alkyd paint. Been around for many years. It's a low-cost coating that works fairly well. I would use a good metal prep with zinc before applying it that would add some increased corrosion protection.
     
  24. Fortunateson
    Joined: Apr 30, 2012
    Posts: 4,382

    Fortunateson
    Member

    So is it worthwhile to use? Any particular brand of metal prep with zinc?
     
  25. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    The fact that the paint is a few years old I would not use it anywhere that you are looking for long-term protection. You could use it to paint your floors of your car. I would use it on places that would be easy to do over if the need should arise later on. As far as metal prep there are many, POR 15 makes one, Eastwood, KBS

    About three years ago I duplicated as closely as I could the Capt. Lees metal prep, this was some ass kicking stuff. It's sold as Mastercoat Rust remover/metal prep. Basically they're all pretty close just depends who you want to give your money to.
     
  26. Pats55
    Joined: Apr 29, 2013
    Posts: 529

    Pats55
    Member
    from NJ

    It doesn't convert the rust it removes it. The white residue on the fender is the zinc phosphate. The converters turn it dark gray or black I would definitely use it prior to just going with the black Paint over rust formulas. Makes a world of difference
     
  27. Slow down
    Joined: Jan 7, 2014
    Posts: 96

    Slow down
    Member

    [​IMG]used tremclad rust reformer on my 50 Pontiac 2 years ago it is holding up great with a coat of regular tremclad over it. I did an s10 frame from up here in the rust belt ,in September,pressure washed it twice, one heavy coat of rust reformer let dry for 24 hours. Then brushed on tremclad paint let it dry for 24 hours , then shoved it out the door to sit till the cab is ready . I check the frame all over once a week for rust coming through, nothing so far . Only $100.00 bucks in material.


    Sent from my iPad using H.A.M.B.
     
  28. Yes it is. Once you've used it, if you leave the part out in the weather it'll rust again. I use this stuff in the shop at least once a week. Seems that every car coming in, somebody stripped paint and left it outside. That faux petina look ya know. I use this stuff. I talked about it on my handyman wagon thread. Works good on rust.
     
    Elcohaulic likes this.
  29. Fortunateson
    Joined: Apr 30, 2012
    Posts: 4,382

    Fortunateson
    Member

    Yeah the Corroless is a few years old but has never been opened. Does this stuff simply break down with age?
     
  30. Elcohaulic
    Joined: Dec 27, 2017
    Posts: 2,598

    Elcohaulic
    Member

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