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Discussion Starter #1
Hey guys I am kind of new here. Anyway today I did the muffler delete on my cougar and noticed that parts of the rear undercarriage are really really rusted bad. There are some parts so bad that all you have to do is poke it lightly and you put a whole in the sheet metal. I will get some pics later.

Anyway is their anything I can do to stop and treat this or is it to late for those sections that are rusted that badly. Its all underbody rust and rear bumper damage nothing on the actual body. You see the thing is the reason I did the muffler delete for now was becouse the mufflers on it were in bad shape without a tailpipe or anything. So instead of coughing up the money for the exaust system right now I just figured I would throw the mufflers out and make it so the pipes actually did not throw up the exhaust right against the bumper like before the muffler delete.
 

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Like splattered said, the only 100% full cure is new metal. Sandblasting is effective. I'm not a fan of POR15.. around the shop I use Master Series silver coating from PM Industries. In either case, especially with POR15, you must exactly follow directions for the product to work as intended. The silver is pretty durable and I've even used it to fill pinholes in rusted metal when built up.
 

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Discussion Starter #4
Thanks for your help guys. I have never did any sheetmetal work or major bodywork on a car before. However if I had a garage (I live in an apartment) I would be pulling cars apart everyday. Its something I love and its in my blood. Anyhoot. So I guess I would just take the bad metal off and connect the new sheet metal to the good parts of that metal.

I really have to do some research on this.
 

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Discussion Starter #6
Alright here are some pics of it. Not to good but you can see it. This bar is right near the bumper and where the muffler hangers bolt in to. Infact it was so rusted that I had to saw off the hanger instead of unbolting it.

<a href="http://s597.photobucket.com/albums/tt59/ljgoose/?action=view&current=0322091129a.jpg" target="_blank"><img src="http://i597.photobucket.com/albums/tt59/ljgoose/0322091129a.jpg" border="0" alt="Rust anyone?"></a>

<a href="http://s597.photobucket.com/albums/tt59/ljgoose/?action=view&current=0322091129.jpg" target="_blank"><img src="http://i597.photobucket.com/albums/tt59/ljgoose/0322091129.jpg" border="0" alt="Got Rust?"></a>
 

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PostWhore, The AFDB is on a lil tight.
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Like splattered said, the only 100% full cure is new metal. Sandblasting is effective. I'm not a fan of POR15.. around the shop I use Master Series silver coating from PM Industries. In either case, especially with POR15, you must exactly follow directions for the product to work as intended. The silver is pretty durable and I've even used it to fill pinholes in rusted metal when built up.
Seeing those pictures now I'd sandblast it and use either POR 15 or as mentioned master series coating. Watch your rockers I'd clean them up even if they don't look bad. It just depends on your time and money and resources just like the age old questions that are always asked here when referring to repairs. Its easy to just sit back and work on a rust free car. But it takes a real champ to fix one up and drive it everyday.
 
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