It didn't look too bad until I started removing the under-seal.
1. Should I remove all the under-seal?
2. If so what's the best method, scraping scratches the microscopically thin galvanizing where it still exsists and a hot air gun leaves residue behind.
3. Do I have a cat in hells chance to arrest this? (will rustbusters 2-pak work?)

I do find this a bit depressing.









Any suggestions on the best way forward would be welcome.

Thanks

Mark

 

Mark,

Check this thread by RaceDiagnostics:

https://www.jaguarforums.com/forum/x...-repair-79511/

Detailed repair of the worst case of XK8 rear wing rust I've seen.

Graham

 

It looks to be in better condition than mine was, but be prepared for worse. Mine didn't look too bad from the outside, but what was lurking underneath was frightening.


https://www.jaguarforums.com/forum/x...t-****-132166/

 

I'm wondering if the curse for these vehicles is the foam/underseal suff sprayed between the outer and inner rear wings.



If I remember correctly Renaultvation's wings were eaten from inside - so is it damp getting behind this sandwich that causes most of the problems?

Has anyone tried digging this stuff out and then applying rusteater and proper paint?

Surely if we can get both sides of a rusted wing painted to prevent any further oxygen or water getting to the surface then we should halt the corrosion - yes?

 

Would this work?

Using a 1mm cutting disk cut out the inner wheel-arch (somewhere before the seam at the very top of the inner arch).

Separate the cut inner wheel-arch and outer wing by cutting into the gungy foam that is the only thing now holding the cut piece of inner wheel-arch in place.
Clean up the inside of the rear wing and paint.
Reassemble (I think you should be able to lose that 1mm cut quite easily.

Reality check please?

Thanks

 

Stop, what you have there is surface rust, it has not come through from the inside.


You can clean that up and repaint.


You can tell if rust has come through from the inside as you can push a spike right through it. Use something like this when checking your rust.





I was able to push one of these through my rear wing paint bubble, but not through the inner arch.


Fix the inner arch this way, https://www.jaguarforums.com/forum/x...e-rust-118945/

 

I'm probably over-reacting but I wonder why renaultvation's outer wings were so bad -
The paint looked sound and if it was damp creeping under the paint on the outside skin, I can't see it reaching as far as it did without more external signs.
So the damp must have come from pinholes on the rear-side of the panel which is inaccessible.
So did the damp/salt creep in and upwards between the inner and outer wings where they meet together at the arch where the fold inwards?
Mine have rust there and the seam-sealer or what ever it is has rust behind it when its dug out.
So if exposed metal is in this cavity do we need to access it and paint it to stop further corrosion?

I just wonder if theres any point treating the visible rust knowing that its still being eaten inside.

Mark

 

I think his rust was caused by a failure of the seal between the inner and outer wing on the lip itself, or maybe it rusted right through from the inner wheel arch, creating pin holes that let the moisture into the gap between the inner and outer skins, then rusted from there into the outer arch skin.


If you pull back the liner in the boot from the rear wing you will be able to inspect some of the inside of the area where you have external rust. The area round the horizontal seal in the pic below can be seen from inside the boot.