As far as the Ospho residue, I'd call or stop by a body shop. They should be able to assist. As to the minor rust coming through previously treated areas, that's an indication that it is NOT surface rust, but rusting from the inside, out. Been there, done that.
Painting over Ospho Rust Treatment
Hi, I have been searching the net for a specific issue I am dealing with. It is with the use of Ospho rust treatment. My pet car I have stashed is a 73 Dodge Challenger Raylle 340 4-speed. It has been around here for a long time and I am retired so I have been taking time to work on it. The car has original paint and of course a good part of its life it has been outdoors. There are some areas with surface rust, some heavier. In the past I have applied rust converter and primer. Some areas now have minor rust coming through. The car is always in the garage now.
The specific question is I sanded the areas down that indicated rust bleeding through and applied Ospho. The problem that arose is that where Ospho has contacted painted areas (some non-original rattle can stuff too) there is a tacky residue that does not completely dry. I want to re-coat the areas with Rustoleum primer to continue to preserve the metal but I am not sure what to do with the sticky residue. The surfaces prior to application were completely free of wax and grease. I scrubbed it with Dupi- Color wax and grease remover. What should I do with the Ospho residue on the paint prior to applying primer? I am very reluctant to use water to remove it. Also I do not want something that will remove rust treatment. Thanks
The specific question is I sanded the areas down that indicated rust bleeding through and applied Ospho. The problem that arose is that where Ospho has contacted painted areas (some non-original rattle can stuff too) there is a tacky residue that does not completely dry. I want to re-coat the areas with Rustoleum primer to continue to preserve the metal but I am not sure what to do with the sticky residue. The surfaces prior to application were completely free of wax and grease. I scrubbed it with Dupi- Color wax and grease remover. What should I do with the Ospho residue on the paint prior to applying primer? I am very reluctant to use water to remove it. Also I do not want something that will remove rust treatment. Thanks
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Thank you for the inputs. You are correct, the rust has been slowly bleeding through from underneath where I had done similar temporary maintenance in the past. All of these areas will ultimately need to be sanded completely off, professionaly prepped and painted. What I am attempting to do right now is temporary maintenance and cosmetic work. I am not one of these guys that will paint over "patina". Not a chanceAs far as the Ospho residue, I'd call or stop by a body shop. They should be able to assist. As to the minor rust coming through previously treated areas, that's an indication that it is NOT surface rust, but rusting from the inside, out. Been there, done that.
You are now at the point where you really need to think about cutting out the rusted areas and replacing the panels. Check out AMD Metal Direct. They have every replacement panel made for the e Bodies..
Thank you for the response. You know WV the car body is in quite good condition actually. It has been in Central and Southern California its whole life (no snow). It had set outside in the rain for a couple of years, hence the rust. It is not to the point of cutting out rusted areas. Sanding off primer and old rust treatment reveals solid metal underneath.You are now at the point where you really need to think about cutting out the rusted areas and replacing the panels. Check out AMD Metal Direct. They have every replacement panel made for the e Bodies..
nice !!!Thank you for the response. You know WV the car body is in quite good condition actually. It has been in Central and Southern California its whole life (no snow). It had set outside in the rain for a couple of years, hence the rust. It is not to the point of cutting out rusted areas. Sanding off primer and old rust treatment reveals solid metal underneath.
Thank YouAs far as the Ospho residue, I'd call or stop by a body shop. They should be able to assist. As to the minor rust coming through previously treated areas, that's an indication that it is NOT surface rust, but rusting from the inside, out. Been there, done that.
The Ortho Phospho will convert red rust to black iron oxide, but it also leaves a protective varnish of some kind. Works fine for ornamental iron, but for steel body panels I have had the same problems you describe. After conversion, I wash it off, then wipe with solvent then shoot the primer and paint. Saved many inboard/outboard boat parts using this stuff.
OK Dad thank you for tipThe Ortho Phospho will convert red rust to black iron oxide, but it also leaves a protective varnish of some kind. Works fine for ornamental iron, but for steel body panels I have had the same problems you describe. After conversion, I wash it off, then wipe with solvent then shoot the primer and paint. Saved many inboard/outboard boat parts using this stuff.
Mistake, should have said thanks for tip Surfer - sorryThe Ortho Phospho will convert red rust to black iron oxide, but it also leaves a protective varnish of some kind. Works fine for ornamental iron, but for steel body panels I have had the same problems you describe. After conversion, I wash it off, then wipe with solvent then shoot the primer and paint. Saved many inboard/outboard boat parts using this stuff.
Yea WV it really is a phenominal car. I seldom take her out, but when I do people fall in love, even though it has primer areas and vinyl top is missing. The same reaction is observed when anybody comes to the house and goes out in the garage. A guy offered me $18,000 and seemed serious. A old well known guru here in So CA who goes by name of "Hot Rod Bob" who has been around forever, has a racing radio show, ect. That guy worked for GM for years and is a damn walking auto encyclopedia. He estimated value at $20,000 +. Not bad for a car I paid $1,000 plus about $6,000 in partial restoration and 340 engine rebuild.nice !!!
Hello everyone, I recently came across two products that promise to transform rust and restore metal surfaces. I'm facing a dilemma and would appreciate your advice. The products in question are OSPHO and rust converter . Before making a choice, I would like to know if any of you have used either of these products and what results you achieved. Which product is more effective in transforming rust and providing long-term protection for metal surfaces? Your experiences and recommendations would greatly help me in making my decision. Thank you in advance for your assistance! Best regards, Dear forum members,
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