How to prevent interior rust of body panels

Just wondering what you guys do to prevent future rust out of body panels from the inside out....especially enclosed areas. Here's my example. My 64 Comet hood was starting to rust out on the frt lip area so I bought another hood. I was thinking about treating the inside between the skin and reinforcement in some way to prevent the new hood from doing the same thing.

In the past I have just poured in some Rustoleum and sloshed it around, but that was years ago and the panels probably weren't that rusty anyway. I guess that would treat fairly clean metal but what if there is rust where you can't see? It would be a ***** to paint a car and then have rust bubbles come up later.

 

it's gonna happen with an old metal car - a friend has a 1966 corvair that sat in his ba*****t for 18 years in bare metal - no rust anywhere - he painted it 2 years ago, put a motor in it & started driving it on good weather days only - it is bubbling the paint over the rear wheelwells right now

 

I'm not saying it's the right thing to do or that it did any good, but I thinned down some Rustoleum rusty metal primer and put it in a pump up garden sprayer to coat the insides of the doors of my '49 Chevy pickup. I have'nt noticed any paint blisters on the outsides yet, and it was done several years ago.

Gary

 

there is a spray you can use for bare metal, i forget the name of it though..

 

I poured one of the 1/2 pint cans of POR-15 into my Galaxie hood and sloshed it around real good. Well I actually did it twice, the first time I forgot to plug the trim holes. Big mess!

Scott...

 

gibbs brand
picklex20
por-15 metal prep

and several others from what i found

 

Another easier way would be to place sacrificial anodes on your car.

http://en.wikipedia.org/wiki/Sacrificial_anode

I've never tried it on a car. But I do know that its the same type of system that a lot of oil tankers & even the US Navy use.

What it does is create a magnetic field that encourages reaction the elements/molecules that want to bind with the iron to for iron oxide. Another way of explaining it would be that it takes the punishment that the car would take. The reason being is that you place a more reactive metal on top.

If your car is your baby then that might be a solution for you. Other then that I have also heard that painting over metal is a good way to go. But you have to douse it in paint.

Maybe someone who is smarter then me could explain.

 

most coatings that keep oxygen off the metal will keep the rust away

rust needs ox to form, simply painting it will keep the rust out


skull