I thought I had put to bed the filiform corrosion issue on my car in 2010, but yesterday just spotted a little bubbling about 1/3rd way down, and in the middle of, the LH D-post. This is where the bodyshell has a joggled joint, and a TIG-weld, linished off before painting. Early cars were prone at this location, but mine didn't have it in 2010, just other places !

So for now, I have scratched out all the white corrosion product and touched in with a zinc-rich paint. When I get another dry day, I'll touch it in with a paintbrush and colour coat. When the weather gets warmer, I'll do a better repair with an aerosol can I have in the garage. It's a bad location for this corrosion, because it is such a prominent place, but the car just is not worth me spending a lot of money in a paint shop, at least for now, anyway.

Anybody else suffering ?

 

Just make sure its a zinc coat made for alloy otherwise the extras in the mix will react and speed up the corrosion

IE the alloy reacts with the extra metals that are meant to bond with steel

PS cant you just cut it out and tin in a small patch?

If it was me id cut around the corrosion, if its small enough use a die grinder and burr
Insert a patch from behind.
A handy trick is to dap some tig filler rod to the patch so you can insert and pull it up
Now just tig around the patch and fill with Rod then grind back flush

Good reason to go buy that ac tig!!!!
I recently upgraded mine to a 220amp ac/dc tig with a 50amp plasma cutter to boot

Cheers
34by151

 

It's the stuff I used for other paint repairs and I have had no problems at all. I don't want to go to a load of expense, frankly.

 

I learned from an expert for metals, that you must take care weather the material of your tools fits the material you want to get corrosion free. If little parts of your tools remain within the material, they could also cause new corrosion.

I'm not sure if this topic is critical on cars... is there a jag-doc talking about this topic ?

 

There was a TSB for the a and c pillars.

http://www.jagrepair.com/images/TSB/...20C-Pillar.pdf

 

Many thanks, I have saved a copy.

 

So yesterday and today, I got around to painting the D-pillar. I had tried using an old aerosol I had in the garage, but the shade was so wrong, I had to take it all off, then the weather went bad, etc etc !! I then went on the 'net, and found a paint supplier who supplied aerosols against the paint code, this arrived early last week.

So with careful flatting off with 1200 grade, the paint went on and to my great puzzlement, it dried matt. Of course it was real base coat !! So I looked out my old can of clear lacquer only to find it dribbled out as most of the propellant had leaked off. A quick rush to Halfords, (a UK motor factor), and a new can was bought and sprayed on. It still didn't look right, and I was thinking I would have to give the job to a paint shop. However, this morning with the paint nice and dry, I got the paint polish out and lo and behold, it polished up great and the colour match is as perfect as I can see !!

Success !! So pleased am I that I am now refinishing another section where I had used the old aerosol, this will now be repainted and no longer look awful. I hope we can have some more dry and reasonably dry days without wind !!