Good fenders with internal rust

[JoeyD1968runner]

How do you manage fenders that are good on the exterior but have surface rust on the inside?
Any help would be appreciated,Joey D

 

[BeepBeepRR]

How bad is the surface rust? If its not too bad try using vinegar and water let it sit on it and it should eat away the rust.

 

[66 Sat]

If it's only surface rust then sand the crap out of it until it's all gone, treat it with some.sort of sealer, and then paint.
Mine were like this, after sanding I used a product called Penetrol (not sure if sold in US), and then undercoated and top coated with an oil based paint. I haven't put any stone chip paint on them, but you could so that too.

 

[1STMP]

Started with this.

Ended with this
A sand blaster is man's best friend.

 

[hunt2elk]

Sand blast, epoxy prime, and paint.

 

[VFilms]

415 also works as a sealer after the rust is gone. The can also says you can apply directly over rust, but I wouldn't do that.

 

[zyzzyx]

If they are for a restoration, have them dipped, and then E-coated. They'll be like new.
A little pricey, but worth it!

 

[themechanic]

You can use a submersible pump to keep Evapo-Rust liquid flowing over large areas, like fenders. Or, you could use rags soaked in Evapo-Rust, use the Evapo-Rust Gel, or some of the other derusting gels.

I recommend wire wheel to remove the loose rust.

Evapo-Rust is about $17 per gallon.

 

[JoeyD1968runner]

I used the Evapo-rust on small parts. It works well. But on a whole fender or door. The rust is internal to the panels.