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Removing undercoating?
#54429
03/01/08 07:16 PM
03/01/08 07:16 PM
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Anonymous
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Anonymous
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Whats the easiest way?
I tried to steam pressure wash the undercarriage today but it did nothing.
I've heard people using a torch and scraper, or paint remover.
Is there any way to make the job simpler?
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Re: Removing undercoating?
#54430
03/01/08 07:25 PM
03/01/08 07:25 PM
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Joined: Feb 2004
Posts: 34,870
S.E. South Dakota !
bigdad
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S.E. South Dakota !
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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
1) start a fire !
2) don't get anything in your eyes
3) Use mechanics gloves
4) wear a mask .. I think that junk is haz mat ?
I used the propane torch and putty knife allot.
Wire wheel in drill in some areas (wear goggles)
Acetone and a rag to soften areas where you can't get at easy ..
I scraped over 100 lbs off my car ..It was really caked on in places
awful, awful job ..Plopped it on jackstands and worked an area till clean and then moved on
if you jump around , you get bummed out
elbow grease ..I hope to never do it again
if you were doing a complete
put it on a rotessire and blast it but then you have the left over sand, media to deal with
My truck I cut the floors out and built new ones
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: Removing undercoating?
[Re: bigdad]
#54431
03/01/08 08:27 PM
03/01/08 08:27 PM
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Joined: Apr 2005
Posts: 4,915
new berlin wisconsin
Mr T2U
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new berlin wisconsin
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i read on this site that engine degreaser will soften up rustproofing so you can pressure wash it off.
spray it on and keep it wet with the degreaser for about 30 min then most of it will wash off.
never tried it myself.
perception is 90% of reality
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Re: Removing undercoating?
[Re: bigdad]
#54432
03/01/08 08:27 PM
03/01/08 08:27 PM
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Anonymous
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I saw a guy on Moparts had his car on a rotisserie and blasted it with steam and it came off.
I tried this today with a forklift and power washer but it did nothing.
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Re: Removing undercoating?
#54433
03/01/08 08:29 PM
03/01/08 08:29 PM
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Re: Removing undercoating?
#54434
03/01/08 08:30 PM
03/01/08 08:30 PM
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I guess i should have tried degreaser or something of the sort.
I was trying to blast it off.
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Re: Removing undercoating?
#54435
03/01/08 08:30 PM
03/01/08 08:30 PM
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The places where its off was already gone.
I was blasting the other spots and it basically did nothing.
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Re: Removing undercoating?
#54437
03/01/08 08:34 PM
03/01/08 08:34 PM
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Joined: Feb 2004
Posts: 34,870
S.E. South Dakota !
bigdad
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Nice wheelie !
there is no easy way, its not going to "just wash off"
You would have to get it to melting point
Not sure what that is but ..I KNOW with a propane torch , it takes a minute or so before it softens
up , and it cools right back down
So, you can only do an area 6" x 6" maybe ?
and often it leaves a residue that you have to clean off with a rag soaked in ..
Its a PITA ..
how fancy is this beast going to be ?
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: Removing undercoating?
[Re: bigdad]
#54439
03/01/08 08:38 PM
03/01/08 08:38 PM
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Anonymous
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Quote:
how fancy is this beast going to be ?
Not fancy at all. Its a father son project with my dad and i and it's going to be a DRIVER! Definitely far from perfect. I just want to get all of it off so i can treat the floor pans with rust bullet or something.
I'm not looking for a 100 point car by any means.
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Re: Removing undercoating?
#54440
03/01/08 08:41 PM
03/01/08 08:41 PM
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Anonymous
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Quote:
Nice wheelie !
 
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Re: Removing undercoating?
#54441
03/01/08 08:41 PM
03/01/08 08:41 PM
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Joined: Feb 2004
Posts: 34,870
S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
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Posts: 34,870
S.E. South Dakota !
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I'd take a visual on the floors if they look soild , just use a can of new undercoating ..freshen it up a little Unless, you want to get real, real dirty Cause its a thankless job 
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: Removing undercoating?
[Re: bigdad]
#54442
03/01/08 08:45 PM
03/01/08 08:45 PM
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Joined: Nov 2007
Posts: 21,819
Kirkland, Washington
Pacnorthcuda
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Kirkland, Washington
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Quote:
I scraped over 100 lbs off my car ..It was really caked on in places Quote:
omg!!! Did you weigh it? Or somehow try to accurately estimate? Thats amazing. I would think a 5 gallon bucket of undercoating would not even weigh 100 pounds.
And I've done some dirty jobs before but this is one I don't think I will ever do.
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Re: Removing undercoating?
[Re: bigdad]
#54443
03/01/08 08:45 PM
03/01/08 08:45 PM
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Anonymous
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The floors are real solid but have a lot of surface rust that i don't want to get any worse.
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Re: Removing undercoating?
[Re: bigdad]
#54447
03/01/08 09:09 PM
03/01/08 09:09 PM
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Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP
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SW Fla.
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Quote:
I'd take a visual on the floors
if they look soild , just use a can of new undercoating ..freshen it up a little
Unless, you want to get real, real dirty
Cause its a thankless job
Unless, you want to get real, real dirty
Cause its a thankless job
 I removed it on my 71 and will never do it again. If its that hard to get off, its protecting and will protect the metal better than anything you will replace it with. My next car has it really thick and I intend to leave it and just recoat the areas that were missed the first time. As Bigdad says.
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Re: Removing undercoating?
[Re: 68Cbarge]
#54448
03/01/08 09:13 PM
03/01/08 09:13 PM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
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Canuckville
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It is more important to remove the undercoating that is already lifting as moisture can creep under it.As I removed some of it there was surface rust underneath.The really hard to remove schtuff will have mint paint/metal underneath.As mentioned,leave the really good stuff on.I did. P.S. I wear a face shield and my worst clothes.I also lie down on a foam mat to be somewhat comfortable. Keep your beer away from the working area,too!! Nobody likes black chunks in their favorite brew!! 
Last edited by 68Cbarge; 03/01/08 09:14 PM.
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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