Ed Hughes

Thanks Pete

Peter Zimmermann

FYI: Your patch looks really good!

Amber Gramps

Is this the same stuff? I can see some rust one my welds and need to re-seal it all. Where can I get it? I remember that it is flammable....

Ed Hughes

I bought a big spray can of Wurth "High Build Rubberized Undercoating". I was in Pep Boys the other day, and I see they carry a similar product, it was a name brand. Maybe all the same, maybe not. I like the Wurth products, so I went with that.

whalebird

We had a guy come through our shop with a similar problem. We did the same exact repair as you have done. This was a track car and he claimed turn in and braking was a little crisper after restoring the structure. His tracmate recordeed the best times he had ever turned at Roebling Road. Maybe it was psychological, but he was glad when it was done. At any rate, it goes a long way to stay on top of little things like this.

Ed Hughes

Hey, I'll take psychological improvements on track times any day!

Tippy

As somone mentioned about coating the inside welds to prevent rust, OSPHO is the way to go, to KILL rust.

Once OSPHO is applied and done its work, you simply brush away (it gets flaky and powdery) and primer/paint area. Guarantee no rust again.

Amber Gramps

found this while searching for something else:

https://rennlist.com/forums/4187233-post6.html

Ed Hughes

Not sure what this relates to? Can't remember the post topic, it looks to be body work. We're talking chassis work here....I'm still scared to death of body work, but that may change.

Also note I suggested using new parts, that's what I'm discussing up above here-so consistent logic is there

Lastly, you're starting to look act like "he who shall not be named" in that you're borderline on stalking. This posting of old posts seems to be a bad habit that you need to break sooner rather than later.

Amber Gramps

Ed, go back to the link and click on this line: Thread: Procedure for taking out rusted floorpans on a 911 It looked to be relivant to this thread topic to me.

I was trying to figure out what the OP in that thread is doing with all the cars he is buying and selling. He must enjoy buying then, fixing them up, and starting with another.

I think we have a long way to go before you see me in a tinfoil hat.

Ed Hughes

Ahhh, well that was almost 2 years ago-I'm older and wiser now.

whalebird

+1 on the OSPHO. I have used it a bunch of times. It is the best stuff for oxidation hands down.
Years ago there was a recall on certain Mercedes models concerning a treatment inside the frame rails for corrosion. We had to take a parafin wax type of stuff and shoot it into the frame rails through holes in the frame. The Benz factory rep told us to properly do this required a special air gun. "Off the record" he told us to order a JC Whitney rustproofing kit. It worked very well and I think they still sell them. I did a lot of cars with this outfit and really felt good about the result. I could very closely reproduce the cosmoline appearance on newer cars. FWIW.

HarryD

Hmmm, it should be. From their web site: "OSPHO is a balanced formula of Phosphoric acid, Sodium Dichromate, Surfactants, and Extenders." You have phosphoric acid to covert rust (iron oxide) to iron phosphate and then have some chrome plate out to provide protection. Nasty but effective.

As a former resident of the rust belt when cars were not galvanized, you are describing a familar product. It was marketed as Zeibart rust treatment (there were others). They took your new car, drilled a bunch of holes in the rockers, door and other obscure areas and sprays this waxy substance intot he holes and put plactic plugs in to hold it in place. Was suppoded to stop rust from forming.