<VV> Rust Proofing
Vairtec at optonline.net
Thu Jun 3 13:36:47 EDT 2010
I live in New Jersey, a state that loves to salt its roads. I have had
two experiences with rustproofing that proved successful.
The first was on a year-round daily-driver Greenbrier in the early
1980s. The truck came to me directly from southern California and had
no rust. I fashioned a siphon spray wand out of brake line tubing, and
sprayed used motor oil into all the body cavities. Messy, and
environmentally unsound, but it worked. I drove that Greenbrier until
it had had 229,000 miles on it, then I sold it, and I saw it again some
years after than, still no rust.
The second was on a brand-new Chevy S-10 pickup. Drove it directly from
the dealership to Bill Ableson's shop and, using a similar brake line
wand, we sprayed black zinc chromate paint into all the body cavities.
Sold that truck a decade later with 150,000 miles on it and no rust.
I should point out that finding and accessing all the body cavities on
the Greenbrier -- or any Corvair -- requires diligence, patience, and a
little ingenuity. For example, I needed to drill a coupe of access
holes, but I wanted them to be inconspicuous. So I drilled one-inch
holes, and used the stock-appearing one-inch grey Caplugs found in
Greenbriers to plug the holes.
It was also necessary to clean the body cavities on the Greenbrier
before starting the process. I used homemade nozzles on a vacuum
cleaner, and compressed air.
While I have never undertaken to rust-proof a Corvair car, every Corvair
car I have owned has undergone the body-cavity-cleaning process.
Leaves, twigs, pine needles, dead mice etc.
The S-10 job required two people. As the paint was being applied it
would emerge from unexpected places, and the second person had to wipe
it up before it dried.
Today, I think I would go with a combination of the paint trick and the
commercially-available body cavity waxes. Like others have said, I would
stay away from undercoating products.
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