Jump to content

How to neutralize alum panel corrosion before paint?


Recommended Posts

Like the title says, I'm getting to the body work on my 1988 D90 resto, and there is a little bit of surface corrosion on the rear aluminium body panels. Does anyone know the best method of treatment to neutralize the reaction prior to primer?  Or how have others tackled this problem in the past?  I'm planning to prime the entire body with a few coats of epoxy primer before moving on to high build primer/surfacer and then a basecoat/clearcoat finish. 

Thanks!

Link to comment
Share on other sites

When I painted 45 I sanded the corrosion areas both aluminium and steel, wiped with acetone then dabbed por15 over with a brush. Once dry a light flat back then a spray coat of super etch (etching filler primer good for tying to existing paint). A dab of filler here and there, more filler primer and 2k top coat. I did that in 2009, beat it into trees and swap in Russia and been off roading it ever since. It's held up well some has come back now but most the corrosion now is new not the existing.

Mike

Link to comment
Share on other sites

After removing as much of the powder as possible mechanically, I treated the exposed aluminium with Kurust.  It's not meant for aluminium, but seems to work adequately.  The important thing is to treat the back of the panel too - it usually occurs where steel is contacting the rear of the panel, and needs separating with a thin sheet of plastic if possible or a generous wax application of not.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy