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09-24-2020, 12:45 PM | #1 |
Senior Member
Join Date: May 2010
Location: Upstate; The Real New York
Posts: 443
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The space in the double wall on the chassis
How have you guys treated the space within the double wall
sections of the chassis ??? |
09-24-2020, 02:24 PM | #2 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: The space in the double wall on the chassis
I apply OSPHO. Let it dry for a few days, then apply paint in a spray bottle.
Wipe off drips and runs. Then paint frame. Or, apply OSPHO, then Rustoleum black paint, then frame paint. |
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10-05-2020, 08:39 PM | #3 |
Senior Member
Join Date: May 2010
Location: Upstate; The Real New York
Posts: 443
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Re: The space in the double wall on the chassis
So,would you position the frame on its side or verticle
to get the ospho to flow into the double wall sections ??? And, there is nothing to neutralize ??? |
10-05-2020, 10:27 PM | #4 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: The space in the double wall on the chassis
You can leave frame horizontal as it normally sits. I apply the OSPHO using a spray bottle spraying it into all the tight crevices, joints and double frame rails. I also apply it to the entire external frame using a rag.
Just follow the directions on the OSPHO bottle. Of course, if you can flip the frame on its side or upside down it's easier, especially if you have a rotisserie. After applying the OSPHO you don't have to neutralize it prior to painting but, it does convert the rust to iron phosphate which may cause 'runs". Let the OSPHO'd metal dry for a day or two before painting. Just smooth the iron phosphate runs out with a piece of sandpaper or small wire wheel. Before you paint the frame I would use a Scotch Brite pad and rub down the frame as much as possible. Do a small area first as a test site. Here's a 51 Merc frame that I did. There's also a product called Metal Prep. Google it for info. You might want to post a question on Fordbarn to find out what other folks do to prepare and paint their frame. 50 years ago when I did my 40 frame (below), I just sand blasted it and then sprayed on Rustoleum black. I didn't know about OSPHO. Eastwood makes a nice Chassis Black paint. I am an amateur so there are others who may have better ideas. Last edited by 19Fordy; 10-05-2020 at 10:38 PM. |
10-11-2020, 09:10 PM | #5 |
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Join Date: Mar 2012
Location: Minnesota
Posts: 53
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Re: The space in the double wall on the chassis
X2 on Ospho! Ace Hardware can order it if they don't stock it. Thin like water, so it flows into seams really well.
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10-12-2020, 08:48 AM | #6 |
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Join Date: May 2010
Location: Snohomish,WA
Posts: 1,030
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Re: The space in the double wall on the chassis
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10-12-2020, 03:08 PM | #7 |
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Join Date: Jul 2011
Location: SF Bay Area
Posts: 6,633
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Re: The space in the double wall on the chassis
I haven't used Ospho, but 19Fordy's description of it sounds like my experience with Rustmort. I removed the caked on dirt and rust from my floorboard with putty knives and wire brushes, then slopped on Rustmort with a disposable brush. Next day, you easily find the spots that didn't convert to iron oxide (black), and do them over again. Primer paint directly over the iron oxide, as sanding it defeats the purpose of the product. On the underside, I used long rubber gloves and a full facemask to do the same.
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