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09-03-2007, 03:52 AM
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#1 |
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Registered User
 
Join Date: Mar 2007
Location: Bismarck, ND
Posts: 81
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undercoating
What undercoating have you guys had the most luck with? I am looking for something DIY.
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09-03-2007, 05:46 AM
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#2 |
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Registered User
Join Date: Dec 1999
Location: Northwest NJ
Posts: 746
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Re: undercoating
I always liked the 3M black rubberized. Chris
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09-03-2007, 11:37 AM
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#3 |
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67 is sold
Join Date: Apr 2001
Location: Troy, Michigan
Posts: 6,733
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Re: undercoating
Personally, I'd never use anything, especially on an older truck like these.
Chances are there is already some rust starting and all you will do is trap it to grow as well as close up factory drain holes and create a mess on the underside of the vehicle. |
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09-03-2007, 12:00 PM
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#4 |
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Member
Join Date: Jan 2007
Location: Manchester, Iowa
Posts: 1,493
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Re: undercoating
__________________
Korey 1955 Bel Air 2 door hardtop 1971 Blazer 4x4 1973 Z-28 Prostreet |
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09-03-2007, 03:31 PM
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#5 |
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Registered User
Join Date: Mar 2007
Location: Bismarck, ND
Posts: 81
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Re: undercoating
I am planning on neutralizing the existing rust with POR15. Will it be good enough to leave the POR15, or should I topcoat it with something?
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09-03-2007, 05:23 PM
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#6 | |
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67 is sold
Join Date: Apr 2001
Location: Troy, Michigan
Posts: 6,733
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Re: undercoating
Quote:
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09-03-2007, 06:33 PM
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#7 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: undercoating
I agree with the above posts on not undercoating.
My 68 GMC came undercoated under the fender wells and wheel wells from the dealer. It's not a sure fire method to keep rust out, especially if it's an older truck. And if you want to do some detailing, like cleaning and repainting it, you really can't do it without major sandblasting. I think a good cleaning, prepping, and painting will serve your purpose for many years. |
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09-03-2007, 09:26 PM
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#8 |
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Registered User
Join Date: Apr 2006
Location: oklahoma
Posts: 10,669
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Re: undercoating
Im oposite on the undercoating, especially trucks from the rust belt. On my orange and white, 12 years in Indiana. The only place that wasnt rusted on the bottom had undercoating. What ever wasnt undercoated had rusted first then went into the undercoating. As for taking it off use naptha, simple green, or engine degreeaser. Eats the stuff up. I would seal the whole bottom of the truck with primer, por15, equipment enamel or paint before undercoating though.
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09-04-2007, 01:36 AM
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#9 |
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The Original HotRod KnifeMaker
Join Date: Jan 2007
Location: Tenino, Washington
Posts: 811
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Re: undercoating
I would pass on undercoating
__________________
Dave 69 GMC SWB 2WD 454 Turbo 400 |
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09-04-2007, 01:43 AM
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#10 |
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Registered User
Join Date: Mar 2007
Location: Grundy Virginia
Posts: 385
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Re: undercoating
Black paint.........
__________________
"OLE BLUE" Goodwrench 350, 5speed, Tilt, PS, PB, "some guys got into cars for money or girls but i got into cars because of the cars" -Jay Leno |
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09-04-2007, 08:48 AM
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#11 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,211
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Re: undercoating
Undercoating saved my truck for the past 40 years, although it wasn't the typical undercoating. This undercoating consisted of roofing tar and 90 weight gear grease put on with a roller.
 Hey, it's nasty so work under it at times, and the crap will drop in your eyes, but theres no serious rust to be found under it. The original owner also drilled holes on the inside of the bed, doors, and fenders, to squirt oil in to keep the body panels from rusting.  So undercoating isn't such a bad idea IMO. The old-timer ways of undercoating are what saved my truck. Besides, how many people besides you are gonna crawl under your truck and say "Look at that ugly undercoating, what a mess!" |
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