Toad 0 Posted May 6, 2009 Right.... I'm pretty good on mechanical work, but rubbish on cosmetic stuff. I need to fix a variety of rust patches on the VR. Where should I start? Most are quite small and I would like to patch the paintwork up for the time being before getting the whole car blown over at a later date.... Quote Share this post Link to post Share on other sites
VR6 0 Posted May 6, 2009 I know I'm the king of the search but this thread has quite a lot of info and even if it's not what you're after, it's pretty damn amazing anyway! viewtopic.php?f=11&t=76311 Quote Share this post Link to post Share on other sites
davidwort 0 Posted May 6, 2009 depends where it is, I've never had much luck with 'rust killers', best bet is to ensure the metal is clean and dry (steel can absorb moisture apparently) and all the rust is removed if at all possible, gently warming the panel if it's not warm dry weather is supposed to help remove moisture from the metal, then prime with a 80/90% zinc primer. If it's on the sills or underneath the car then the overpaintable underbody sealant needs to go on top of the zinc primer before top coats. Quote Share this post Link to post Share on other sites
coullstar 0 Posted May 7, 2009 I bought some rust killer gell but yet to try it out. I got a replacement wing that being fitted so Im going to get some practice with my old rusty one. http://www.bilthamber.com/deoxgel.html Quote Share this post Link to post Share on other sites
PROVR6 0 Posted May 7, 2009 Ive done a couple of patch repairs on my scorpio. Cleaned all the rust off, primed it, can sprayed with 3 coats and 2 coats lacquer. Looked ok for about a month and has now bubbled again :( Quote Share this post Link to post Share on other sites
davidwort 0 Posted May 7, 2009 ^ I think that's due to the metal absorbing moisture, it's a pain but you need to leave the exposed steel for quite a while with some gentle heating (direct sunshine or a lightbulb near it) before priming, particularly if a large rust patch has formed in an area that's stayed damp for a while, wheel arch, sill etc. The other thing is fine hairline cracks forming in topcoats allowing moisture through to the primer and metal, still not sure why this happens, might be due to the thickness of coats or a poor match of primer and topcoat. Quote Share this post Link to post Share on other sites
Toad 0 Posted May 7, 2009 Ok. So, wire wheel, bare metal, zinc primer, skim of filler, undercoat, top coat, job done? Quote Share this post Link to post Share on other sites
jimmyvwjunkie 0 Posted May 7, 2009 Ive done a couple of patch repairs on my scorpio. Cleaned all the rust off, primed it, can sprayed with 3 coats and 2 coats lacquer. Looked ok for about a month and has now bubbled again :( yeah u have to pre-heat the panel. i done the same and it bubbled. second time lucky though :dance: Quote Share this post Link to post Share on other sites
