Remove the factory undercoat?

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    Author Topic: Remove the factory undercoat?  (Read 15857 times)

    Offline mrbill426

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    Re: Remove the factory undercoat?
    « Reply #15 on: June 24, 2009 - 10:51:14 AM »
    Thanks again, and I will take before photos.  :2thumbs:
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    Offline A R T

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    Re: Remove the factory undercoat?
    « Reply #16 on: June 24, 2009 - 11:36:18 AM »
    I have an uncle thats a Chemist by trade. He has a early B-body he has been tinkering with forever.
    He used soybean oil. Its amazing. Cuts right through the undercoating, softens it up, you can wipe it off with a paper towel or rag.
    Give it a try

     :cheers:
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    Offline burnt orange

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    Re: Remove the factory undercoat?
    « Reply #17 on: June 24, 2009 - 12:45:34 PM »
    Quote from: A R T on June 24, 2009 - 11:36:18 AM
    I have an uncle thats a Chemist by trade. He has a early B-body he has been tinkering with forever.
    He used soybean oil. Its amazing. Cuts right through the undercoating, softens it up, you can wipe it off with a paper towel or rag.
    Give it a try

     :cheers:

    Now THAT idea might be worth a try!! I was not looking forward to crawling around under my car with a propane torch and a scraper or using some cool chemical, but soybean oil sounds great. 

    Is it just the stuff from a local grocery store or is it some super secret genetically modified ultra expensive soybean oil that I won't be able to get in Canada?
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    Offline mrbill426

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    Re: Remove the factory undercoat?
    « Reply #18 on: June 24, 2009 - 11:08:28 PM »
    Cool, thanks for the tip, I will try it!   :thumbsup:


    Quote from: A R T on June 24, 2009 - 11:36:18 AM
    I have an uncle thats a Chemist by trade. He has a early B-body he has been tinkering with forever.
    He used soybean oil. Its amazing. Cuts right through the undercoating, softens it up, you can wipe it off with a paper towel or rag.
    Give it a try

     :cheers:
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    '72 'Cuda 340, white on white
    '72 Sebring; bracket project
    '64 Imperial Crown black on black
    '66 Imperial Crown; parts car

    Offline 'cudaCruiser

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    Re: Remove the factory undercoat?
    « Reply #19 on: June 25, 2009 - 01:10:33 AM »
    This thread is great. I've been wondering if I should remove my factory undercoat.
    If there is a chance of rust being under the coating then I should remove it. And if
    the soybean oil makes it easy then there is no reason not too. After taking it off I
    can give it a good coat of Rust Bullet and then apply a new coating.
     :thumbsup: Thanks guys!

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    Offline A R T

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    Re: Remove the factory undercoat?
    « Reply #20 on: June 26, 2009 - 12:51:10 PM »
    Quote
    is it some super secret genetically modified ultra expensive soybean oil

    Well, if you do happen to find some like that, I woulds say, go ahead and use it.
    If you cant, just go to the supermarket and buy the cheap stuff.  :roflsmiley:

    It doesnt fall off. Spray it on, soaking the undercoating good. You might need a putty knive in places to peel the big stuff off. Then soak it again.
    Its not "effortless", but it sure beats the sh*t outta trying to melt it with a crack pipe torch   :screwy:  :smilielol:
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    Offline 426HEMI

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    Re: Remove the factory undercoat?
    « Reply #21 on: June 26, 2009 - 01:43:23 PM »

    Who would have ever thought about using soybean oil to remove it.  Glad I looked at this thread for that idea.  Too cool
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    Got a pretty good start on my M46 optioned Barracuda restoration but now it is on hold till I can gather more funds.  Still need a few parts for it.  SIU Graduate 75 AAS Automotive Tech, 94 BS Advanced Tech Studies, 1997 MSED Workforce Education and Development

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    Gordon

    Offline E-Body Products

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    Re: Remove the factory undercoat?
    « Reply #22 on: June 28, 2009 - 10:40:00 PM »
    The soy bean oil is a cool idea....  I will try it on the next car I do.  Unfortunately, that might be awhile, since I still have to finish this cuda first.  I used the torch method and it worked ok, but it did take forever. 

    Forever is a week when you are working with no A/C and it is 90-100°F outside, right?   :smilielol:

    Daniel
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    Offline ragtopdodge

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    Re: Remove the factory undercoat?
    « Reply #23 on: July 03, 2009 - 04:43:37 PM »
    If you're going to do full rotisserie, do it right.

    Heat, scrape, then wipe down w/some lacquer thinner or equiv.  Then blast away!
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    Offline GreenFish

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    Re: Remove the factory undercoat?
    « Reply #24 on: October 14, 2009 - 12:38:35 PM »
    someone had put undercoating in the engine compartment of my cuda before I bought it. i'm not sure why but they did.  I used that aircraft Tal-Strip stuff and a pressure washer, worked great.
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    Offline burdar

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    Re: Remove the factory undercoat?
    « Reply #25 on: October 15, 2009 - 11:18:49 AM »
    There is a guy on Moparts who is from Ohio that uses a pressure washer to remove undercoating from his cars.  I'll try and post a link to his threads.  His pressure washer is heated and heats the water to over 200 degrees.  He has even used it to remove paint from doors exc...the results are amazing.

    OK...I found the restoration thread on his 74 Challenger.

    http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Board=Projects&Number=3854481&page=2&fpart=1
    « Last Edit: October 15, 2009 - 11:25:44 AM by burdar »
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    Offline Cuda Cody

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    Re: Remove the factory undercoat?
    « Reply #26 on: December 12, 2009 - 02:47:35 AM »
    Has anyone tried the soy bean oil yet?

     ???
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    Offline BIGSHCLUNK

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    Re: Remove the factory undercoat?
    « Reply #27 on: December 12, 2009 - 10:01:24 AM »
    Quote from: C O D Y on December 12, 2009 - 02:47:35 AM
    Has anyone tried the soy bean oil yet?

     ???

    Hmmm... curious myself  :clueless:
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    Offline Cuda Cody

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    Re: Remove the factory undercoat?
    « Reply #28 on: December 12, 2009 - 12:09:27 PM »
    I'm ready to remove my undercoating and was hoping that someone had given it a try.

    The thread about using a hot water pressure washer worries me a bit.  Doesn't heat build up warp body panels?  Also, putting hot steaming water in every crease and crack only seems to promote rust?  Am I right in thinking that?

     

    Quote from: BIGSHCLUNK on December 12, 2009 - 10:01:24 AM
    Hmmm... curious myself  :clueless:
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    Offline Topcat

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    Re: Remove the factory undercoat?
    « Reply #29 on: December 12, 2009 - 12:18:30 PM »
    In thick areas of under coating, I used a propane torch. When it wasn't that thick, I used a heat gun. Just keep whatever heat source you're using, just keep it moving and you should'nt have any issues with warpage. I also kept compressed air near me at all times. Whenever I felt the quarter panel beginning to get warm, I'd shoot some air to cool it down. Once it was all off, then I used some paint stripper. Scraped the last remants of paint and under coating off and the wheel well areas were ready for media blasting. OEM panels are more thick steel gauge than the repros. Remove under coating out of wheel wells with the quarter off if you are planning to replace the quarters.
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    Mike, Fremont, CA.

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