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12-20-2020, 01:43 AM | #1 |
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Join Date: May 2010
Location: Encino California, near Burbank
Posts: 935
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Media Blasting 40 Body
Shopping for a safe body blast for my final 40 coupe. My strong favorite blaster just hates the tar like insulation inside the body. I notice that the jobs shown on this site go either way, remove the insulation or scrape it out. Probably some middle ground but not as well pictured. I don't have a rotisserie and no place to stage the job. This body is coming off and I may have to use some grip tech to safely handle it. This is a great body and it is worth the effort or the money. Thanks: Fred A
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12-20-2020, 05:30 AM | #2 |
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Location: East Hartford, Ct
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Re: Media Blasting 40 Body
Other than having to do metal work in a specific area, I don't see any reason to remove the factory sprayed on tar sound deaden-er.
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12-20-2020, 09:42 AM | #3 |
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Join Date: Oct 2013
Location: Delaware
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Re: Media Blasting 40 Body
I just had (Oct) the 1940 Coupe body in my Avatar "dustless blasted" (while on the frame) on the outside sheet metal and had rear pan and Quarter panels replaced we did not touch the inside. The inner metal and underside were replace by prior owner so no need to remove body. Being painted now hope to have back in early 2021
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12-20-2020, 10:22 AM | #4 |
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Join Date: May 2010
Location: North San Diego area
Posts: 100
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Re: Media Blasting 40 Body
I have not had occasion to try this myself. Tar based undercoating, when frozen with dry ice becomes brittle and can be shattered and easily removed. Has anyone tried this process?
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12-20-2020, 11:38 AM | #5 |
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Location: Napa,California
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Re: Media Blasting 40 Body
No need to remove the factory sound deadener. Just do the outside and use spray on bedliner to overcoat the factory insulation.
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12-21-2020, 01:41 AM | #6 |
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Location: Encino California, near Burbank
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Re: Media Blasting 40 Body
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12-21-2020, 08:54 AM | #7 |
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Join Date: May 2010
Location: Liberty, KY
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Re: Media Blasting 40 Body
I just removed the tar in a pair of doors for a 32 2 door with a scraper and a heat gun. Not a easy or pleasant job but doable. Dale.
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12-21-2020, 12:44 PM | #8 |
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Join Date: May 2010
Location: Encino California, near Burbank
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Re: Media Blasting 40 Body
Not just that removing the tar is doable, but by having six forties in a lifetime, the car that is by far the nicest example yet should get some caution when it comes to a factory feature that can't be duplicated. No doubt that the underbody needs to be done, but the record of the original paint and traces of the seam sealers and insulation can't be replaced. I can't do a totally authentic restoration and have my own reasons for the non destructive variations that I choose. Good Luck: Fred A
Last edited by Fred A; 01-14-2021 at 09:02 PM. Reason: clarity |
12-21-2020, 06:44 PM | #9 |
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Location: Cincinnati, OH
Posts: 1,356
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Re: Media Blasting 40 Body
No advice to give on the tar coating but a little to offer on the blasting of your sheet metal: find someone who can soda blast or use the dry ice blast method. If the operator uses the sand blast method on sheet metal it can warp in seconds if he isn’t extremely careful. He’ll be oh so sorry but highly unlikely to pay for the repair or replacement of the damaged body panels.
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12-21-2020, 07:15 PM | #10 |
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Location: Shelton, WA
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Re: Media Blasting 40 Body
Heat gun and putty knife is cheap and easy. Don't overheat it and it comes off like butter. Yes it is a little messy but not that bad. I just did that on my 55 brand X. Like said before, it probably doesn't need to come off unless you need to do welding in that area. I just recently finished a 46k mile 40 business coupe and left the original stuff there as the body was perfect. Up this way the rain gutters are usually the first parts to have rust problems, then the normal spots.
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