Should This worry me?

Rice_slayer · Nov 26, 2009

After my car developing an exhaust leak on the driver side where the header meets the midpipe(yay cold weather contraction/heat expansion) I noticed from very unsightly rust bellow where my brake booster is on the frame, I don't know how clear you can make it out in the pics, but should I get this taken car of when the engine is out this winter? I also took a pic of the k member which has some rust too...

K member rust(minor, but looks like it could pose harm...)

vermilion · Nov 26, 2009

if youre going to have the engine out for the winter might as well go apesh1t on the rust then.

Rice_slayer · Nov 26, 2009

Thing Is, I don't know about treating rust :S. Just do the typical sand, bondo, sand repeat until smooth and paint?

ttocs · Nov 26, 2009

looks like a perfectly good reason to upgrade.....

Inspector13 · Nov 26, 2009

Rice_slayer said:
Thing Is, I don't know about treating rust :S. Just do the typical sand, bondo, sand repeat until smooth and paint?
[/quote

No. Generally rust repair requires you to cut out the offending area, make a patch panel, weld it in, grind the welds smooth, use a primer meant for going right onto bare metal, then all the prep that goes with priming and painting.

Although with what you have they got stuff that can be painted right onto it that will stop it and strengthen it. It's called POR15. Never used it before. Friend of mine did once and said that it looked good when he was done. He sold the car not much after that to get something more practical and more reliable.

Rice_slayer · Nov 26, 2009

Wouldn't sanding it down/putting that POR15 stuff on give the best result? I just don't want rust holes

.

Inspector13 · Nov 26, 2009

I personally don't know as I've never used it. I'd think cleaning it up with a Brillo pad or some sand paper would be required before putting that stuff on. Definitely couldn't hurt. Make it smooth and sexy.

ccasion14:

MustangChris · Nov 26, 2009

some metals are not harmed by rust. i beleive aluminum is an example of one (not 100% sure)

the surface rust of aluminum actually protects the rest of teh metal and makes it stronger.

someone feel free to correct me if im wrong.

Rice_slayer · Nov 26, 2009

That's not aluminium, that's right below where the strut tower meets the body

.

MustangChris · Nov 26, 2009

i know. but all im saying is that common-knowlege says "rust=bad" ... all i want you to do is get passed that common-knowege and find out if THAT rust = bad... it might be benificial for all you know...

Rice_slayer · Nov 26, 2009

Dunno, either way I'm gunning the engine bay out and cleaning every crack and crevass with the engine out lol.

Steven · Nov 26, 2009

Sand it off, shoot it with same paint. Nothing to it. Aluminum doesnt rust, neither does stainless steel due to it being treated, sort of like treated lumber. Nothing serious unless its penetrated the metal to the point that there is a hole in the frame. I've had a fox that the same spot rusted through, to the point where I crushed the car.

Petek · Nov 27, 2009

Steven said:
Sand it off, shoot it with same paint. Nothing to it. Aluminum doesnt rust, neither does stainless steel due to it being treated, sort of like treated lumber. Nothing serious unless its penetrated the metal to the point that there is a hole in the frame. I've had a fox that the same spot rusted through, to the point where I crushed the car.

aluminum does not rust but it will corrode pretty quickly if its left in bad elements and corroded aluminum deteriorates especially when in contact with bare steel . for the record lower quality stainless steel with higher carbon amounts DOES rust. also stainless steel is not "treated" it is created (its a whole different breed than steel) basically metals all have their uses but steel and aluminum need to be painted, or coated.

MustangChris · Nov 27, 2009

HERE IS THE LOW DOWN ON ALUMINUM RUSTING:

"
Does Aluminum Rust?
Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion.

Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum, so it isn't as easy to notice as rusted iron.

When iron corrodes the color changes and it actually expands. This expanding and color change can produce large red flakes that we all know as rust. Unlike aluminum oxide, the expanding and flaking off of rust exposes new metal to further rusting. This why it is so important to provide a barrier so rust doesn't start.
"
-http://www.theruststore.com/Does-Aluminum-Rust-W26C2.aspx

BrandoGT · Nov 27, 2009

Rice_slayer said:
Wouldn't sanding it down/putting that POR15 stuff on give the best result? I just don't want rust holes .

I would recommend the POR15 although if you sand it down I think you have to hit it with the "metal ready" as well, because if you apply POR15 to bare sanded metal It will hold for shit and you will think the stuff is a piece of junk. I actually plan on using some POR15 on my mustang this winter because unfortunately it has been subjected to a few wisconsin winters while I was in college and has developed some cance but now I have a different dd and the mustang is going to become a project car. I have heard great results with POR15 as long as you follow the directions. One of my college roommates restored an old motorcycle and used POR15 for his gas tank and said it was awesome. He said their were 1/8" - 1/4" holes in the tanks and after the POR15 treatment, it looked pretty cherry.

Petek · Nov 27, 2009

MustangChris said:
HERE IS THE LOW DOWN ON ALUMINUM RUSTING:

"
Does Aluminum Rust?
Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion.

Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum, so it isn't as easy to notice as rusted iron.

When iron corrodes the color changes and it actually expands. This expanding and color change can produce large red flakes that we all know as rust. Unlike aluminum oxide, the expanding and flaking off of rust exposes new metal to further rusting. This why it is so important to provide a barrier so rust doesn't start.
"
-http://www.theruststore.com/Does-Aluminum-Rust-W26C2.aspx

thats not entirely true. i have done my share of aluminum fuel tank repairs. ive done tonnes of patch panels and cutting and welding on aluminum fuel tanks because they have corroded and pitted so bad they were pissing diesel everywhere.

brad94GT · Nov 27, 2009

the person who started this tread is an idiot

BlkoutGT · Nov 28, 2009

Is the por15 stuff, kinda like a thick paint that you brush on? I saw an episode of either horsepower or muscle car (pretty sure it was m.c.) where they used some stuff like i described. I guess peaple use it for undercoating and restoring cars and stuff like that. If you put it on with out sanding it will stop the rust in its tracks. Is this the same stuff or does anybody know/seen what Im talking about. Ive been wanting to get ahold of that stuff.

Rice_slayer · Nov 28, 2009

brad94GT said:
the person who started this tread is an idiot

Why? Because I actually care about my car and don't put primer parts onto my car?

duh09 · Nov 28, 2009

I wouldn't worry TOO extensively. It doesn't look too bad. I've heard good things about the POR15 from my Bronco days. Bronco's are pretty big rust buckets. I was lucky and had a good solid one. That looks to just be surface rust. Sand it down, find out the low-down on applying POR15 and slap that junk on there. Or yea, tubular K-Member time, haha