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tar sound insulation stuff


Guest Anonymous

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Guest Anonymous

It gets really old scraping the stuff off with a screwdriver.... Any better way to get it off? I'm gonna bring home a pile of dry ice from work today and put a thin layer over then tar and see if that makes it brittle enough to come off easily. Any other ideas? Any really nasty solvents that dissolve this stuff(I would doubt it, but who knows)?

 

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Morgan morgan@z31.com

http://carfiche.com

http://z31.com

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Guest Anonymous

I would think heating it would just make it stick better! It's tar, so I wouldn't think that any reasonably obtainable solvents would take it off very well......

I'll try the dry ice thing. Freezing it and whacking it with a rubber hammer is real easy and seems like it ought to work reasonably well, no?

 

 

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Morgan morgan@z31.com

http://carfiche.com

http://z31.com

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It works, believe me. The heat softens it then you scrape it off like butta. smile.gif If you heat a 6" by 6" section at a time with a heat gun it will just scrape it off like scrambled eggs. There will be a small amount of residual stuff at the edge of the scraper swipes, but that comes off real easy with mineral spirits.

 

The thing I don't like about the ice method is that you have to hammer the stuff off and ding up the metal with a chisel, from what I've heard. To each his own.

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Guest Anonymous

If it's really tar then WD-40 should do the trick. If you ever get Henry's roof tar on you then you'll know what I mean. It's the only thing that will take it off except acetone. Worth a try soak it over night.

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I bet WD-40 would do it. But I'd rather not have a bunch of oily stuff on the sheet metal, as you'll want to put something on it later that would necessitate takign the WD40 off and out of the seams, etc. Mineral spirits or anything like that will work on the tar. Tar will brake down with any kind of petroleum based stuff that comes off the distilate tower above motor oil, I'd think.

Ever seen what gasoline does to a tar patch on the road or driveway? I wouldn't use gasoline though, too dangerous. Be careful with any of those solvents, obviously, for your health and fire hazard reasons.

 

Even if you use dry ice, your going to have to clean up the residue on the sheet metal. Clean it with a paint shop metal wipe after getting the residue off with mineral spirits.

You might want to etch the metal with something like Oxysolv, etc. to get a nice rough surface for the POR-15 to bite onto.

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Guest Anonymous

Morgan,

 

Just last night Mike Kelly and I were out in my garage doing the same thing to my car - NASTY work!!!

 

Go to your local auto parts store and pickup a product called "Aircraft Stripper". I found it at the local AutoZone. It appears to be just a very strong paint stripper. Slather it on nice and thick and wait for it to dry (~1-2 hours). Then take a paint scraper and it will scrape right off. If you don't wait for it to dry it will make a HUGE mess (well it is going to make a mess anyway - but waiting for it to dry will make less of a mess...). After I get it all scraped off I take a Scotchbrite pad and some laquer thinner and wipe the sheet metal down.

 

A few words of caution - DO NOT get the "Aircraft Stripper" on your skin. Beleive me, as soon as you do you WILL know it!!

 

Good Luck...you are in for a NASTY job!!!

 

Chris

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Guest Anonymous

Yeah, I'm not worried about the residue... The floorpans will be wire brushed with a angle grind thingie and then degreased for the por15 stuff(I love that stuff!), I imagine it will be plenty clean.....

I'm praying the dry ice works nicely. The stuff on my floors was coming off in quarter-half dollar size chunks, sometimes larger, so it isn't all that bad. Seems the stuff wasn't heated enough when applied or age has adversely affected it. At any rate, I was happy to find that my floor pans were far less rusty than I thought(And I thought they had little to no rust).

 

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Morgan morgan@z31.com

http://carfiche.com

http://z31.com

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Yup, as I explained to Chris the other night, I took a fender and headlight bucket and slathered the aircraft striper on it some years back.. I went for a 1-2 hour bike ride and came back.... Hosed off the stuff with my high presure water hose and the paint was gone.. down side, or upside depending on the repair work you plan, is that is takes all the body filler out as well... The key to aircraft striper is to let it sit and do its job, so just be patient with it and it will do wonders...

 

Mike

 

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"I will not be a spectator in the sport of life!"

mjk

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