Quarter panel corrosion

[Parksy]

Hi all

I've got a little bit of corrosion in the lower quarter panel on the gq on both sides of the car. What I thought was a little bit of surface rust actually turned out to be rust from the inside making its way out. For the moment I've just removed what I could, chucked as much converter in there as I could and bogged it. Then flooded the inside section with fish oil. It's minimal and is covered by the majority of the rear mud flap, but I was wondering what a panel beater would charge to fix the problem properly? The section itself looks quite difficult to work with, what with the mud flap mounts, the panel isn't exactly flat and that it's a hollow section with both sides having corrosion.
A quarter panel chop would solve this easily, though id much prefer to retain the original numbers and mud flaps if possible.

Thanks all for reading

Andy

[mudnut]

Five years ago, I had rust in the plenum chamber, (air for heater etc.) in a corolla. Was Quoted $3000 to get it fixed, so I bought a small tig welding set up for $1500 and approximately $400 worth of light duty argon gas (bottle rent included). After paint and sundries, did the job for just over two grand. And now I have a tig. If you are good with your hands and like a challenge, try it yourself. I should add that I stripped the interior of the vehicle so no risk of fire. I would also think your fuel tank would also have to be removed.

[Parksy]

Thanks mudnut! 3 grand is alot for what seems like not much in terms of outcome. If it did infact cost as much as you quoted, I'd do it myself and buy myself a welder(same as yourself).
I had a quick peep at the internal section by removing the reverse lights/brake lights and was relieved to see that it isn't anywhere near as bad as I first thought. I gave it another soaking of fish oil, although this time I could actually see what I was spraying so I made sure it ran down the seam at the front so it would seep into the nooks and crannies where the rust was.

[threedogs]

No way of getting in there with any kind of cutting disc to remove any rust already there
not sure "FISH OIL" will prevent rust growing if there already. its wicked stuff rust as you know
Small dremel or renovator style tool to remove as much as you can

[Parksy]

Cheers 3d. I didn't actually realise that I could see the internal section until I looked at it today, so when I can be bothered again I might use the dremel to remove as much as I can and use the rear taillight window to see how it's going. Hoping the fish oil does freeze it, I bought some penetrol today which claims to freeze rust. Should have used this instead.

[threedogs]

plenty of great rust preventative products maybe some kill rust first remove with water, dry with hair dryer
then apply your "no rust" solution

[mudnut]

I found water was getting in via the petrol cap tunnel, (for want of a better word). Just for your own amusement, get a panel beater to give you a quote. We didn't get change out of $1000 to get the rust taken out of the van's windscreen frame, plus a new windscreen.

[Parksy]

3d, will plan to give the insides a hose out with water as there is abit of buildup of crud on the inside, but might wait until the weather warms up again so I don't have water trapmeant issues. I haven't hear many positive things about the watyl brand of rust killers, but I am a big fan of using por15s metal ready(phosphoric acid) which I haven't heard many negative things about.
Mudnut, might have to get a quote, for humours sake. Then work out the cost if I did it myself, including new equipment... Might be a laugh.