Cleaning Underbody
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 26
Likes: 0
Cleaning Underbody
Spent 6 hours cleaning and scraping the the underbody of my '62. Not too bad but there is a section where it looks like it was sprayed with undercoating. Can't get the stuff off no mater what? Anyone have any suggestions. Also would lightly soda blasting hurt any, want to try and clean up the corners and get some light paint off from a previous repaint.
Thanks
Thanks
Race Director
Joined: Mar 2009
Posts: 19,777
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From: Canada's capital
2020 Corvette of the Year Finalist (appearance mods)
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Try a heat gun and a scraper, but be careful, and stay away from wiring, and have some water handy.
Race Director
Joined: Dec 2004
Posts: 10,332
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From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
I had good success with a product called GUNK Bug and Tar remover. Spray it on, let it sit for a few minutes and scrape off with a putty knife. Afterward, clean the surface thoroughly with mineral spirits.
Does not hurt the glass as far as I could tell.
Does not hurt the glass as far as I could tell.
Melting Slicks
Joined: Jan 2007
Posts: 2,582
Likes: 150
From: York PA
Good one as that stuff does work pretty good cleaning tar/bugs off the car. Something else I have used in small areas is one of the citrus removers like goof off.
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 26
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Bug/Tar Remover
I will try the bug & tar Remover tomorrow. the body is seperate from the fram so access is easy and don't have to worry about wiring etc. I used some paint remover & gunk engine cleaner and neither really loosened it up. Could bearly get through it with a scraper never mind getting it totally clean.
Thanks
Thanks
Racer
Joined: May 2008
Posts: 258
Likes: 7
From: Beaver Falls Pa
There was a big gob of original (I think) undercoating near the firewall of my 60 that wouldn't come off no matter what I used. It was between the outer and inner fenders. Since the body was upside down, I uses a heat gun on the opposite side of the panel and the whole lump loosened up enough to remove it in one lump. The remainder was easily cleaned up using the standard cleaners.
Rod
Rod
Race Director
Joined: Apr 1999
Posts: 10,866
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From: Beverly Hills/Pine Ridge Florida
I will try the bug & tar Remover tomorrow. the body is seperate from the fram so access is easy and don't have to worry about wiring etc. I used some paint remover & gunk engine cleaner and neither really loosened it up. Could bearly get through it with a scraper never mind getting it totally clean.
Thanks
Thanks
Chuck
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Verdad Gallardo
Safety Car
Joined: Mar 2001
Posts: 4,359
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From: AUSTIN Tx
I agree with Chuck. Spray some mineral spirits on the undercoating and let it sit. You may have to come back and re-wet it several times, but it will soften it up so the putty knife will scrape it off easily. There were several places on a 62 that were supposed to be undercoated, so you may want to avoid cleaning too much of it off if you are only going to have to replace it. The rear of the front wheelwells (including the splash shields), the front of the front wheelwells (including heavy coverage on the back of the headlight assemblies), and the rear wheelwells.
Regards John McGraw
Regards John McGraw
Melting Slicks
Joined: Nov 2004
Posts: 2,311
Likes: 223
From: Temecula CA
undercoat removal
First pass: heat gun and wooden scraper (modified kitchen implement)
Second pass: spray on kerosene, wait, and scrub with red scotchbrite
Final cleanup: spray on kerosene and wipe clean.
Second pass: spray on kerosene, wait, and scrub with red scotchbrite
Final cleanup: spray on kerosene and wipe clean.
