ddoiron

Hi Guys,

I have been restoring this old 1987 F150.
I have put in 4 floor weld patches, both fenders and reconstructed both cab corners.

So when ever I saw rust, I just cut it all out and welded a patch.

But I removed a fiber glass visor from the roof and found this rust...
Its SOOOO close to the Windshield and I dont think I can get good metal along the windshield edge to weld to.
I am going to bring it to a paint shop to get it done professionally, but I need to know how to prep this so that the paint lasts for years.

This is the most worrying, since its so close to the windshield.
https://i.imgur.com/ZhoEtus.jpg
https://i.imgur.com/jd1ddCa.jpg

But there is also rust in the corners of the door frame. So same question, is there a way I can keep from cutting all this out?
https://i.imgur.com/2rxxXNZ.jpg

Can I sand the surface, put OSPHO on it until its all black and then put body putty over it?
If not, what do you suggest?

thanks!

Denis

ddoiron

No one has any suggestions for me? Is it that bad? :-P

CeaTom

Hi, you can probably try IGL coatings ecoclean Iron, I bought a bottle a few month back to try to get rid of corrosion on an old barbecue pit of mine. It did wonders, all I had to do was apply it on a sponge, apply it and let it do its magic for about 5 or 10 minutes and them wipe it off... This being said, your problem does look serious so I wonder if even that would be enough...

mastercoat

Be sure to treated it first with acid metal prep. Following up with two coats of a moisture cured aluminum pigmented rust sealer. This works especially well in windshield channels. All your patches should be treated the same way. Only aluminum pigmented moisture cures cut off oxygen, you can follow it up with any kind of paint primer over your repair.

ddoiron

i treated it twice with ospho. Then two coats of an epoxy priimer, then fiberglass putty, two coats of epoxy primer, then paint. Its been outside for months no bubbling yet

Stu Cazzo

This type of job is almost impossible to weld! I've done a few.
Using semi auto welder, on lowest setting for heat (amp) I would shoot small burst of weld about a second or so long. Anything longer and it will burn right through.
Do this around hole and build it up, grind it all down smooth as it will look pretty bad then do it all over again until you've built the metal up enough that it has its strength back.

mastercoat

That Repair should last for years. Having worked in industrial coatings I have a tendency to overkill things.