shalmaneser 26 Posted September 21, 2008 Not too bad as you can see, but I'd rather stop it now before it gets any worse. How difficult is it to weld a plate in here, it looks like it's single skin, or is there more that one bit of chassis here? Just thinking of fabbing up a bit of metal, welding it in and sealing it afterwards. Obviously looking at dropping the fuel tank out, other than that looks fairly straight forward. It's not an MOT fail is it? It's a fair old distance from any sus mounting points, and doesn't look structural. As the description, any thoughts/advise appreciated! Cheers, Adam. Share this post Link to post Share on other sites
steve@cornwall 100 Posted September 21, 2008 Often overlooked by mot man................. but well within 300mm of rear seatbelt mount? Share this post Link to post Share on other sites
craig f90 0 Posted September 21, 2008 Mines been the same for years. on the list to do. Passed mot every year with that too. Share this post Link to post Share on other sites
Flix 0 Posted September 21, 2008 They must all rot there. Just chop it out and weld a new piece in. Easy job with the tank out. Share this post Link to post Share on other sites
Miles 331 1 Cars Posted September 21, 2008 I doubt any MOT'er would notice as it's under the seat's and you could always just stick some sealer over it worst case if they did notice. But it is a tank out job, but don;t worry thats one of the key 205 rusty points Share this post Link to post Share on other sites
shalmaneser 26 Posted September 21, 2008 Cool, thanks for the input. probably leave it till next summer then fire up the ol' welder and let rip! Hoe she passes MOT with it, might do as miles says and blob a bit of sealant on it... Share this post Link to post Share on other sites
djinuk 2 Posted September 21, 2008 both my 205s are the same. Share this post Link to post Share on other sites
Stu 18 Posted September 21, 2008 Id be tempted to drown it in Jenolite to try to stop it spreading, blast on a bit of sealer and paint and forget about it for a while! Share this post Link to post Share on other sites
SurGie 54 Posted September 21, 2008 Cool, thanks for the input. probably leave it till next summer then fire up the ol' welder and let rip! Hoe she passes MOT with it, might do as miles says and blob a bit of sealant on it... Hi ya mate, Both my 205's have this problem, my 1.9 one has only got surface rust on this area. The most evident reason for this is the rear quarter badge have little holes in the rear wing so they fit in, its just these are not water tight and let rain in then it drips down to this area and settle's till rust appears, try taking them of an stick them back on with flexible silicone, then electric tape it up straight over night then its sealed, job done. Yeh clean it up,then put kurust on it then seal it up, that'l sort it out for a while, in case mot see's it and decides its no good. Share this post Link to post Share on other sites
RossD 44 Posted September 22, 2008 Yep, mine had gone in exactly the same place too. Cleaned up and all the rust removed it was only a tiny hole, so a fibreglass filler skim and a paint and nobody will knwo it was there. Seems like the #1 place for a 205 to rot. Share this post Link to post Share on other sites
dirtdog 4 Posted September 22, 2008 (edited) I don't think rain leaks in and sits there...at least not with mine. I thought it was happening to me, until I realised what the under side was like Haven't got around to having a proper look underneath yet but I know what's in store for me... I can't find the pictures I saw the other day, this is the only one I can find at the moment and it's not too bad you get the picture though. I've seen some pretty bad looking ones Edited September 22, 2008 by dirtdog Share this post Link to post Share on other sites
SurGie 54 Posted September 22, 2008 I don't think rain leaks in and sits there...at least not with mine. I thought it was happening to me, until I realised what the under side was like Haven't got around to having a proper look underneath yet but I know what's in store for me... I can't find the pictures I saw the other day, this is the only one I can find at the moment and it's not too bad you get the picture though. I've seen some pretty bad looking ones The rust looks like its started from the inside as the paint peeling with rust underneith, when u take out petrol tank i'd seal it up with protecting body sealant underneith and on the inside of the seat area, that'l stop it happening again, i did that to mine. Them holes where badges are its best to seal up anyhow, they always leak water in wether it goes in the seat area or even the rear side sill area aswell. Share this post Link to post Share on other sites
dirtdog 4 Posted September 22, 2008 I don't get any leaks in the car(I used to from the sunroof handle, and the rear lens because it wasnt sitting flush after someone shunted me....silicone to the rescue!) I personally think it starts underneath and comes through into the inside of the car. Dirt,mud etc clinging to parts that you can't really clean. I blast out of wheel archs every so often to get rid of all the crap but obviously I can't get to where the tank is. I think mud or whatever gathers here and holds the moisture leading to nice rust blisters and eventually holes I'm plating the inside and the outside. I'm going to seriously reinforce the other side, weld a nice thick plate and literally drown it with rust treatment products I'm not being argumentative or anything, but I just don't understand how you think water on the inside is causing the outside/underneath of the car to rust. Surely it rust from the outside and then eats its way inside? Share this post Link to post Share on other sites
SurGie 54 Posted September 22, 2008 I don't get any leaks in the car(I used to from the sunroof handle, and the rear lens because it wasnt sitting flush after someone shunted me....silicone to the rescue!) I personally think it starts underneath and comes through into the inside of the car. Dirt,mud etc clinging to parts that you can't really clean. I blast out of wheel archs every so often to get rid of all the crap but obviously I can't get to where the tank is. I think mud or whatever gathers here and holds the moisture leading to nice rust blisters and eventually holes I'm plating the inside and the outside. I'm going to seriously reinforce the other side, weld a nice thick plate and literally drown it with rust treatment products I'm not being argumentative or anything, but I just don't understand how you think water on the inside is causing the outside/underneath of the car to rust. Surely it rust from the outside and then eats its way inside? Yeh it can go either way, its jst in the prctical classics mag where they put a buying guide in there for 205, they say what i said that water goes in them holes where bades go on and settle in seat area's. The many 205s i had the rust always goes in the ofside of the seat area iv never seen yet it rusting on the near side. That could be just the cars iv had thou. Share this post Link to post Share on other sites
dirtdog 4 Posted September 22, 2008 Would've thought the rear window seals would be the main culprit for water in rear seats? I've got rust patch either side.. not identical, the offside is bigger and has a little crack/hole in it. The near side has not come all the way through..no holes as of yet! I've only owned two so i'm probably wrong anyway Share this post Link to post Share on other sites
SurGie 54 Posted September 22, 2008 Would've thought the rear window seals would be the main culprit for water in rear seats? I've got rust patch either side.. not identical, the offside is bigger and has a little crack/hole in it. The near side has not come all the way through..no holes as of yet! I've only owned two so i'm probably wrong anyway Water/mud also probly setles between the tank and body, best to fully seal up with body sealant like the stuff they use to guide panels together and the stuff that you can see in pic, they use that stuff to seal and protec the whole car from rot, it works well. (when you take tank out). iv got a 4 door GT with windows and i still have the rust in my 4door seat area. It most likely to be the boot seal/badge holes and fuel tank area thats the many causes. Share this post Link to post Share on other sites
steve@cornwall 100 Posted September 22, 2008 Yeh it can go either way, its jst in the prctical classics mag where they put a buying guide in there for 205, they say what i said that water goes in them holes wherebades go on and settle in seat area's. The many 205s i had the rust always goes in the ofside of the seat area iv never seen yet it rusting on the near side. That could be just the cars iv had thou. Mine's worse...... on the nearside. Share this post Link to post Share on other sites
weejp 0 Posted October 6, 2008 I have the exact same issue on the offside too, it's roughly 5cm long and possibly 2cm wide at worst. I have the kurust and filler at the ready, anything else I should be aware of? Is the kurust / filler option OK? I would have to get a professional involved otherwise. I never thought the badge holes would be the culprit - mad!!!! My car is garaged and rarely encounters the rain, but I do clean it fairly often, should I go the whole hog and take the badges off and re-attach?? Share this post Link to post Share on other sites
dirtdog 4 Posted October 7, 2008 I still don't think it's the badges..it might be for other people, but not for me. All seals etc are working fine. I think it's just from neglect of the underside of the car. No underseal = rust. Especially if theres an area that's holding mud, which then means moisture as I've already said above. I cleaned mine up and stuck waterproof filler on it for the time being. When I get the time and money I'll remove the fuel tank and do a 'proper job' Not had experience in Kurust, although a friend of mine swears by it. Looks ok if you need to do small areas but I'll be using something a bit more...industrial Share this post Link to post Share on other sites
GLPoomobile 958 Posted October 7, 2008 I've never had much joy with Kurust. But on the recommendation of a friend, I've just ordered a load of Bilt Hamber stuff - Deox C mix, Deox Gel, and Hydrate 80 paint. Looks too good to be true on the website, but he said he stuck a rusty old downpipe in a bath of the Deox C solution for a day and it came out like new! Share this post Link to post Share on other sites
Batfink 201 Posted October 7, 2008 The fueltank is so easy to remove so the rust is a small task to completely sort. Share this post Link to post Share on other sites
Alfie 6 Posted October 7, 2008 Yep, mine had gone in exactly the same place too. Cleaned up and all the rust removed it was only a tiny hole, so a fibreglass filler skim and a paint and nobody will knwo it was there. Seems like the #1 place for a 205 to rot. Hi all, I would recomend a product called Fertan for this type of job. I've used the stuff with excellant results on older rust than this in the pictures. I'm nothing to do with Fertan by the way but just kills rust dead! You can find local suppliers of it through Google. Share this post Link to post Share on other sites
RossD 44 Posted October 10, 2008 Never tried the Fertain, but as GlPoo says, the Deoc-C stuff is top notch. I've got the powder that you mix with the water, removes rust even from the most corroded metal. Trouble is, if you have any coated metal, such as that gold zinc type plating you get on bolts/brackets etc, it also removes that too! Share this post Link to post Share on other sites
