BADASS of New England

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 Undercoating Wag Frame?

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Cadet57

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Join date : 2010-03-14
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Location : Chicopee, MA

PostSubject: Undercoating Wag Frame?   Wed Mar 24, 2010 5:07 pm

The thing that killed my '92 RMW was frame rot, including a nice 2x4" chunk that came out and took the gas strap with it. The underside of my 93 is in much more solid, albeit rusty shape. Thankfully the car was garaged most of its life. Unfortunately, it's not so lucky anymore. I thought about sanding off as much of the bad stuff as I can and doing some sort of undercoat. A Jeep friend suggested a couple quarts of that roll on bedliner. He used it on his mudding jeep and it looks like it hold up well. I figured a plan of:

sanding<priming<sanding< 2nd coat of primer< roll on bed liner.

Think this is a good idea or does anyone know another way?
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sdstick

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PostSubject: Re: Undercoating Wag Frame?   Wed Mar 24, 2010 10:41 pm

POR15 then whatever you want

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Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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Cadet57

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PostSubject: Re: Undercoating Wag Frame?   Wed Mar 24, 2010 10:43 pm

sdstick wrote:
POR15 then whatever you want

Seems simple enough on their website. Is it really just roll it on, no sanding or anything?
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mean ss

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PostSubject: Re: Undercoating Wag Frame?   Wed Mar 24, 2010 11:07 pm

por-15 does not work without sandblasting
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Cadet57

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PostSubject: Re: Undercoating Wag Frame?   Wed Mar 24, 2010 11:09 pm

mean ss wrote:
por-15 does not work without sandblasting

They should really say that on their website, they make it seem so easy Rolling Eyes
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mean ss

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PostSubject: Re: Undercoating Wag Frame?   Wed Mar 24, 2010 11:19 pm

I had to redo my floorboards
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Matt Trakker

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PostSubject: Re: Undercoating Wag Frame?   Thu Mar 25, 2010 12:12 am

I have had good luck in the past with stripping down the frame with one of those 3M rust stripping wheels as well as a wire brush/scraper, following that with a wire brush cup on my drill, washing the frame, treating it with naval jelly, washing again, then painting with Rustoleum "Rusty Metal Primer" and then some satin black after that. You have to use the brush kind, spray paint doesn't last and isn't the same paint as the kind that comes in the big cans.
Finally shot everything with the 3M Rubberized Undercoating, which is an excellent product that dries quick, cleans and shines up incredibly easily, and has a real nice even texture.

Of course, make sure the frame is solid before bothering, rust can be on the inside of it too.

Does anyone here oil undercoat in the winter?
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bammax

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PostSubject: Re: Undercoating Wag Frame?   Thu Mar 25, 2010 12:14 am

Undercoat? Is that like the stuff you put under the car? I just drive fast with an oil leak and let aerodynamics handle the rest Wink
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sdstick

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PostSubject: Re: Undercoating Wag Frame?   Thu Mar 25, 2010 5:38 am

mean ss wrote:
por-15 does not work without sandblasting

Unless you REMOVE mechanically or chemically, its never "gone".

I've had good luck removing as much as possible, using rust convertor them POR15.
IMO If you do it without rushing through the job (let applications dry overnight etc) it buys you lots of time.
Half the battle is keeping the car away from conditions that promote rust.
Even a concrete pad garage in winter will allow moisture so....
I guess the real answer is move southwest. Dont worry, in summer its a DRY heat Wink

_________________
Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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silverfox103

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Location : Littleton, NH & St. Simons Island, GA

PostSubject: Re: Undercoating Wag Frame?   Thu Mar 25, 2010 6:27 am

Matt Trakker wrote:
Does anyone here oil undercoat in the winter?

I do Matt, when I first moved to NH 27 years ago, I new I had to have the cars undercoated. I kept seeing garages, ads and signs for oil undercoating. I never heard of that. I was pretty skeptical; but after I thought about it, if you ever pick up a piece of metal that was sitting outside, but had an oil film on it, wipe it off, it is like new.

Hmm, so I brought my cars down to this old timer that did that. He sprayed on heated bar and chain oil, drilled holes in all the cavities, doors etc. They were soaked and dripped for about a week. He would never have got away with it in MA (environmental, EPA etc.) but this is NH. Anyways for 27 years no rust on my DD's. The old boy doesn't do it anymore, so I just do it myself, real easy and I don't make the mess that he did.

I buy a gallon of bar and chain oil, get out the Wagner power painter, sometimes I heat the oil. I lay down a piece of plastic on the ground and put the car on ramps and use jacks. Two cars are done in a half hour.

Tom
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Cadet57

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Join date : 2010-03-14
Age : 29
Location : Chicopee, MA

PostSubject: Re: Undercoating Wag Frame?   Thu Mar 25, 2010 9:46 am

Matt Trakker wrote:
I have had good luck in the past with stripping down the frame with one of those 3M rust stripping wheels as well as a wire brush/scraper, following that with a wire brush cup on my drill, washing the frame, treating it with naval jelly, washing again, then painting with Rustoleum "Rusty Metal Primer" and then some satin black after that. You have to use the brush kind, spray paint doesn't last and isn't the same paint as the kind that comes in the big cans.
Finally shot everything with the 3M Rubberized Undercoating, which is an excellent product that dries quick, cleans and shines up incredibly easily, and has a real nice even texture.

Of course, make sure the frame is solid before bothering, rust can be on the inside of it too.

Does anyone here oil undercoat in the winter?

I like this plan...

The frame is "solid" I tapped it with a small hammer all around and it was nice and hard. But a couple chips of rust flaked off which makes me want to get this done asap.
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