Re: Removing undercoating?
[Re: 68Cbarge]
#54449
03/01/08 09:17 PM
03/01/08 09:17 PM
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Anonymous
OP
Unregistered
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Anonymous
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Unregistered
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Re: Removing undercoating?
[Re: 68Cbarge]
#54450
03/01/08 09:30 PM
03/01/08 09:30 PM
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Joined: Jan 2008
Posts: 328 Missouri, U.S.A.
JSSuperbee
enthusiast
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enthusiast
Joined: Jan 2008
Posts: 328
Missouri, U.S.A.
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I have to disagree. It ain't worth every minute of it. It was the most miserable automotive undertaking I've ever experienced. I would rather be dead than have a job doing that every day. That tar doesn't just soften..IT IGNITES and flys everywhere when you scrape it off. That hot tar continues to be on fire even when it's stuck to your skin. I for one would never do it again for any reason. It's an experience I'll never forget.
Jim
James Stinebaker
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Re: Removing undercoating?
[Re: JSSuperbee]
#54454
03/01/08 10:10 PM
03/01/08 10:10 PM
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Joined: Jan 2006
Posts: 3,535 Canuckville
68Cbarge
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master
Joined: Jan 2006
Posts: 3,535
Canuckville
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JSsuperbee,I hated doing the work,but the end result was well worth it. I did leave what was still in good shape and freshened it up.The dry,chipped stuff I removed. My car will be a driver so not many will crawl up under to see how well I do in judged/points shows. At least I know in my mind there is no rot underneath.. Plus it's a C so I have more area to recover..LOL!
'68 Newport Custom Barge on a Budget!! BOAB 1973 Satellite WAGON! 318- 3 on the tree!! 2008 Chrysler 300c HEMI!
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Re: Removing undercoating?
[Re: DaytonaTurbo]
#54457
03/01/08 10:41 PM
03/01/08 10:41 PM
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Anonymous
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Anonymous
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Quote:
IMO it sounds like you're better off just scraping off what's loose/flaking off, treating the rust with whatever rust product you were planning on doing, then re-doing the entire undercoating, applying fresh stuff over top of the original undercoating that was still in good shape.
I'm probably going to do this.
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Re: Removing undercoating?
[Re: bigdad]
#54458
03/01/08 11:37 PM
03/01/08 11:37 PM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Well .. I've done a couple cars and,, There is no easy method
I suppose the 64 took me 150 total hours to make perfectly clean.
Anything you use , be careful to not[/quote
150 hrs?
There's a faster way, no fire, no burns and you don't breath any dust. A very hot steam cleaner... I can do the bottem in about 3 1/2 hours.No scrape marks or gouges anywhere. I used a steam pressure washer. I did it in one afternoon and was done with it.
It's still wet in these pictures, those are water droplets hanging off the car.
Big Mike, Here's a tip for ya. That aluminun tank in the picture below, has reg 87 oct gasoline in it. It's a pressurized tank with spray wand. (I used it for years at the track to clean parts) I spray the heavy off first with the presure washer and then spray it with gasoline. It softens the road tar and under coating and speeds things up. I'll spray it wait two minutes or so and then blast it off. I've been cleaning heavy duty trucks for years with these type of pressure washers. Go rent one from a pressure washer place or a tool rental. I used about two gallons of gas doing the job. You would think the run off would kill the grass but it does'nt. I think most of it evaporates before getting to the grass, it's very hot and steamy to the point where you can't really see to good, so most everything evaporates quickly. If diesel fuel or kerosene were used it would be a nasty oilly mess when done and would get to the grass. My
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Re: Removing undercoating?
[Re: 68Cbarge]
#54459
03/01/08 11:54 PM
03/01/08 11:54 PM
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Joined: Jan 2003
Posts: 4,520 Indiana
MonGoo$e
master
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master
Joined: Jan 2003
Posts: 4,520
Indiana
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I've been doing this for weekends now..man what a pain, only i didn't have factory undercoat, i had this thick, greasy, sticky tar like garbage someone sprayed in every seam ever made(74 Challenger) and i have wire wheels of different sorta, scrappers, flat head screwdrivers, wire brushes, What i did was take the parts-cleaner fluid that i was going to dispose, put it in a spray bottle, and sprayed it all over the underside of car on stands.. Most of it soaked in after a few days, got soft and scrapped off, some areas were still tight, theres where the tools come in, I have the leafs/axle out right now.. and doing all that, i swear those truck extentions are a nightmare, the body grooves and pinche welds and tight spaces...ugh..after big work, hit it with brake cleaner ( a few cans) then let it dry..then degreaser... then water..soak it..and wash it off. wipe what you can, dry it out and hit with whatever, por15, zero rust..etc
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Re: Removing undercoating?
#54463
03/02/08 06:16 PM
03/02/08 06:16 PM
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Anonymous
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Unregistered
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Anonymous
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I used the torch and scraper method a few hours at a time for what seemed like months. Paint thinner does remove the residue.
I just saw a product in the Eastwood catalog that claims to be a spray on then scrap it off. I don't know if it works but may be worth a try.
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Re: Removing undercoating?
[Re: 4BBodies]
#54465
03/02/08 09:40 PM
03/02/08 09:40 PM
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Joined: Jul 2003
Posts: 6,343 SE PA.
QuickBpBp
master
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master
Joined: Jul 2003
Posts: 6,343
SE PA.
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Quote:
Paint stripper works good, and is a lot less work too. (Use it outside!) Hit it with an old wire brush as it is working, a few times. Then use a putty kife.
This is the way to do it then just wipe it down with laquer thinner....Removed quite a bit this way and it goes pretty quick...In your case make sure you wear protective clothing and eye wear cause that stuff does burn...
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Re: Removing undercoating?
[Re: 71rm23]
#54467
03/02/08 10:54 PM
03/02/08 10:54 PM
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Joined: Nov 2004
Posts: 2,234 BFE
vancamp
super street
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super street
Joined: Nov 2004
Posts: 2,234
BFE
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before torch and putty knife,wire wheel,sandpaper, thinner, etc.
VanCamp Dent Systems
Paintless Dent Repair/
Mopar Restification
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