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Author Topic: rust proofing underfloors inside garage  (Read 545 times)

firedome

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rust proofing underfloors inside garage
« on: October 13, 2009, 05:55:43 AM »


 So when I took the tank off the '71 and brushed off and blew out
all the red clay from under the floors and around the R subframe, in
the R wheel wells, I found there is no real corrsion or cancer, only
very superficial light surface rust with large areas of still tightly
undercoated metal left, but with some residue of red clay in the
"valleys" of the undercoat areas. With the weather being I have to do
the work inside and dry right now, no ability to pressure wash or glass
bead-blast under there, and there's no way it needs blasting anyhow.


 
So I was thinking  of brush cleaning it with something
non-corroding and relatively innocous and semi-non-volatile like
kerosene and  maybe oil coat it like the VT old timers do? Seems
to work,
I've seen 25 yr old p/u's that look new in a climate w/ 6 mos of salt
on the roads.  Or should I go whole hog and wait for weather to
clean it in a way so that I can use something like DP-40 self etching
primer then paint, or Por 15, or ? I don't want to scrape off the
exsisting undercoat, it is still very tight and has good integrity,
there's no rust underneath it.  I thought I could maybe
just clean and prime the surface rust areas and leave the undercoated
areas pretty much alone?  This car is now, and will be, kept
inside, and will probably never really driven in rain again unless I
get caught out, so
it won't really have to endure any weather anyway.


firedome2009-10-13 11:00:06
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Steve

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rust proofing underfloors inside garage
« Reply #1 on: October 13, 2009, 06:03:53 AM »

As I said in your Tank thread
 
I would pressure wash it with wax stripper and then use some of that spray in bed liner found in wal-mart.
 
I have a friend who uses oild oil in rockers, dog legs ect.  He oils the crap out of everything from the inside out.  Never saw one rust after that.  But you also have to make sure you have all your painting work done before doing it.  The oil get's in the pores of the metal and stays.  You know what a car looks like that has had nasty oil leak. . .
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firedome

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rust proofing underfloors inside garage
« Reply #2 on: October 13, 2009, 07:19:57 AM »

So as I said in that thread... what is wax stripper and where do you
get it - do you mean like kitchen floor wax stripper from the A &
P?  Isn't that basically just ammonia?

 And how does the Mall Wart bed liner get applied?

Should I Por-15 the bare metal (non-undercoated) areas first?



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Steve

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rust proofing underfloors inside garage
« Reply #3 on: October 13, 2009, 07:34:02 AM »

A & P  Yes.  It rinses clean.
 
You want to use the bed liner on everything but grease and rust.  POR isn't great on good metal, but superior on rust.  So POR the rust and spry the bed liner over it.  The stuff is tough, expensive, but
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firedome

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rust proofing underfloors inside garage
« Reply #4 on: October 13, 2009, 09:12:34 AM »

Sounds like a good plan, I already got the POR. Yep $$$, but it's
worked great on my Nova. Did the whole under trunk on it a year
ago.  The silver POR seems best because it actually has metal
particles in it for bonding and filling in some what.



Need a special gun to spray bed liner, or is it in cans?



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Steve

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« Reply #5 on: October 13, 2009, 11:04:20 AM »

Bed liner comes in shakers.  It's a bit pricey, but it goes quite a way
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