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Old Feb 2, 2017 | 03:31 AM
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From: The Buckle of the Bible Belt. Joplin Mo
Default Rust inhibitor

Looking for suggestions in choosing a good chemical rust inhibitor/stripper. I see plenty on the market, but not sure which one to try. Also wanted to pose the question, is it possible to treat & clean the inside of the frame rails when acid dip is not an option?
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Old Feb 2, 2017 | 08:00 AM
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Are you referring to the frame only or other rusty parts? There are several products for dipping parts such as rust restorer, evaporust, etc. that work pretty well. I've tried Evaporust and I like it. As far as the frame if you are not going to sand blast or have it dipped, then you will need to use a rust encapsulator type product such as POR 15 or Eastwood's rust converter. Those products require that you degrease and remove all of the heavy rust and flaking before using them. I've used POR 15 on my frame and I am happy with it but you need to follow the directions to the letter with preparation if you want good results. Eastwood makes an internal frame coating that comes with a wand that sprays the inside of the frame rails.
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Old Feb 2, 2017 | 09:08 AM
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Nothing except a dip will reach all of the layers of metal used to fabricate the frame. However, if you're really motivated, the interior of the rails can be phosphated (Evaporust or similar) by using a lawn misting system. Get a cheap tarp and pump from harbor Freight, tubing with micro holes from Home Depot and build a shallow tub on a slight incline. With the pump on the low end of the tub, push the tubing into the rails and recirculate the solution for a few hours. That's about as thorough a job as can be done.
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Old Feb 2, 2017 | 09:29 AM
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Originally Posted by Gold Dragon
...is it possible to treat & clean the inside of the frame rails when acid dip is not an option?...
FWIW: save your money. Unless you can effectively clean the inside of the frame rails, using rust inhibitor over what is already there and not removed won't help.
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Old Feb 2, 2017 | 09:41 AM
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Hi GD,
What is the present condition of the frame?
I believe that what you want the appearance of the frame to be after you're finished has an impact on how you strip the frame and what products you use on it.
Have you looked at the various products and methods shown in the Eastwood catalogue?
Is having the frame powder coated an option?
Regards,
Alan

Last edited by Alan 71; Feb 2, 2017 at 09:42 AM.
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Old Feb 2, 2017 | 11:19 AM
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At some point youre just going to have to live with what u got. I powdercoated my frame, its impervious to even brake fluid. But deep inside of the rails are pretty much not going to be coated. A pretty solid rust inhibitor is LPS 3. It gives a thick waxy layer. But I look at it like this, Im pushing 60, my car is 45, its probably going to outlive me.

Last edited by Sunstroked; Feb 2, 2017 at 11:20 AM.
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Old Feb 2, 2017 | 12:07 PM
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I use Ospho to converter on certain parts before paint.
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Old Feb 2, 2017 | 07:18 PM
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From: The Buckle of the Bible Belt. Joplin Mo
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Originally Posted by Alan 71
Hi GD,
What is the present condition of the frame?
I believe that what you want the appearance of the frame to be after you're finished has an impact on how you strip the frame and what products you use on it.
Have you looked at the various products and methods shown in the Eastwood catalogue?
Is having the frame powder coated an option?
Regards,
Alan
Hey Alan, On a scale of 1-10 I would rate this frame a 4. I am working with a grinder to remove the surface rust, but noticed some pitting. I want to remove all rust before spraying with undercoat similar to factory. I have posted about cleaning the inside of the frame as well. I am very interested as a caretaker of this car to make sure it is preserved and will last well into the future. The Eastwood products sound like something that should be considered. Powder coat won't be an option. Thanks, Ray
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Old Feb 2, 2017 | 07:26 PM
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Originally Posted by jnb5101
Nothing except a dip will reach all of the layers of metal used to fabricate the frame. However, if you're really motivated, the interior of the rails can be phosphated (Evaporust or similar) by using a lawn misting system. Get a cheap tarp and pump from harbor Freight, tubing with micro holes from Home Depot and build a shallow tub on a slight incline. With the pump on the low end of the tub, push the tubing into the rails and recirculate the solution for a few hours. That's about as thorough a job as can be done.
and an excellent idea of creating a containment area.

BUT...unless the frame is dipped..and neutralized...and a coating applied when the frame is dipped again. Just like the the factories basically do today.. ANY other effort will never get to that level...thus...it will depend on what you are willing to live with.

I get asked this often by my customers and I feel they are thinking that because I am doing it... because it is what I do....that I have some magic wand or process and can make it all better. This can not be further from the truth in this specific scenario. The frame would have to be sent out and dipped and so on if they are looking for the BEST method.

DUB
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