Rust inside the chassis

[khumphreys]

I've seen a lot of threads about coating the chassis with different kinds of things to prevent rust. Since the frame is boxed, how do you remove rust on the inside and coat it? If you redo the outside, won't it still rust through from the inside?

 

[sykanr0ng]

A recent thread on the same topic:

http://classicbroncos.com/forums/showthread.php?t=252410

and the Eastwood product:

http://www.eastwood.com/internal-frame-coating-aerosol-black-14oz.html

 

[Crawdad]

X2 on the Eastwood frame coater. I galvanized my frame since I started from scratch. But with recent welding I plan to use the Eastwood stuff on the inside weld spots since it was burned off.

Others have used Rustbullet inside the frame by piping it thruogh the frame like cleaning a fireplace chimney. It's messy but may add many yrs of service.