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  #13  
Old 06-25-2012, 11:56 AM
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Re: Should I be concerned about this much rust?

I would get a 3M rust remover disc. Fits in an electric drill, it looks like a round brush and is very good in removing loose rust. THen I would get some POR 15 (look it up on the internet) brush it on and the rusted area will turn black. This seals out water and other problems and stops the rusting action. I have used this when repairing old cars. I usually buy POR 15 from venders at swap meets or car shows but you can order online from the maker. make sure you dont paint from the container it comes in, and make sure you seal up what is left or it will harden and go bad.
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  #14  
Old 06-25-2012, 12:01 PM
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Re: Should I be concerned about this much rust?

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Originally Posted by Don's GC View Post
THen I would get some POR 15 (look it up on the internet) brush it on and the rusted area will turn black. This seals out water and other problems and stops the rusting action. I have used this when repairing old cars.
I've used POR-15 kits to clean and seal rusty motorcycle tanks. I'll vouch for it's longevity and effectiveness. That stuff is pretty legit. Costly, but you get what you pay for.
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  #15  
Old 06-25-2012, 06:06 PM
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Re: Should I be concerned about this much rust?

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Originally Posted by Don's GC View Post
I would get a 3M rust remover disc. Fits in an electric drill, it looks like a round brush and is very good in removing loose rust. THen I would get some POR 15 (look it up on the internet) brush it on and the rusted area will turn black. This seals out water and other problems and stops the rusting action. I have used this when repairing old cars. I usually buy POR 15 from venders at swap meets or car shows but you can order online from the maker. make sure you dont paint from the container it comes in, and make sure you seal up what is left or it will harden and go bad.
I was thinking about getting POR 15, it's just so damn expensive, but if it really does work I'll return the rubberized under coating that I bought and order some online.

Quote:
Originally Posted by Yadkin View Post
I can't see the middle picture but the third indicates that you have rust under the factory paint. The good news is that it doesn't look like you have much metal loss.

I would not recommend simply painting over it, or getting a body shop to do that for you. The best way to fix it is to wire brush the coating off along with any loose rust then treat it with a product that stabilizes the rust, then paint it with an inexpensive tractor implement paint.
The wire brush I used did very little to the heavy rust. It really only worked on the light spots. I think I'll get one of the rust discs Don mentioned.

Quote:
Originally Posted by kennzz05 View Post
clean it up much as you can and use rubberized undercoating have you tried one of those flappy sandpaper wheels (dont forget the eye protection had a friend lose the sight in his eye when one of the wires in a wire wheel come loose and pierce his pupil)
have you checked youre rear diff levels lately looks like its leaking

id say considering where you live the rust is normal
Yeah! I had full eye protection on. I wore a mask too (one of those cheap white ones) which definitely didn't work. Next time I'll set my shop vac up right by where I'm grinding.
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  #16  
Old 06-25-2012, 06:11 PM
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Re: Should I be concerned about this much rust?

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Originally Posted by kennzz05 View Post
have you checked youre rear diff levels lately looks like its leaking


Is that what causes the rust around the bolts on the diff?
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  #17  
Old 06-25-2012, 07:06 PM
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Re: Should I be concerned about this much rust?

I dont believe the fluid would cause rust. Deffinatley check the level or even do a fluid change. take off the plate and then reseal it with some rtv sealent and refill with fluid.
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  #18  
Old 06-25-2012, 07:49 PM
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Re: Should I be concerned about this much rust?

the fluid will not cause rust at all, it actually prevents rust from forming. your rust is from salt
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  #19  
Old 06-25-2012, 08:17 PM
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Re: Should I be concerned about this much rust?

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Originally Posted by SvenskaJeepGuy View Post
the fluid will not cause rust at all, it actually prevents rust from forming. your rust is from salt
Looking at the picture again I can see the different colored ring around the plug.

Salt... Who needs it with a Jeep
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  #20  
Old 06-25-2012, 08:23 PM
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Re: Should I be concerned about this much rust?

I had a similar spot at the bottom of my diff. I thought it might be a leak, but it appeared to just be dirt. It came right off and did not return. May be off base though. I have yet to change my fluids. I just hit 40k this week.
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  #21  
Old 06-26-2012, 08:33 AM
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Re: Should I be concerned about this much rust?

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Originally Posted by general975 View Post
The wire brush I used did very little to the heavy rust. It really only worked on the light spots. I think I'll get one of the rust discs Don mentioned.
I think I was fooled by your picture. It looked to me that you had rust under the paint, but apparently you are dealing with rust pits. You have to get all the loose deposits out of the pits before treating what remains. Hopefully you can do that with a disk but you might have to get more aggressive. Good luck.

This is yet one more reason why I left the Rust Belt.
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  #22  
Old 06-26-2012, 10:12 AM
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Re: Should I be concerned about this much rust?

Use the POR 15 after you get the rust removed the best you can. The POR 15 will stop any further rust from forming. DO NOT use rubberized undercoating, this will only trap the water and gas from the rusting metal in and cause it to get worse. You won't know it until the undercoating starts to detatch it's self from the rusted area. Undercoating is only for clean treated metal. Someone here at work treated the underside of a Jeep with spray on truck bed linner. I don't know what that will do down the road. It might be ok if it did not have any rust under it.
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  #23  
Old 06-26-2012, 12:30 PM
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Re: Should I be concerned about this much rust?

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This is yet one more reason why I left the Rust Belt.
You do know the rust belt is called that because all of the shutdown factories and not because of actual rust right?
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  #24  
Old 06-26-2012, 12:52 PM
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Re: Should I be concerned about this much rust?

Good luck, if you POR it let us know how it goes. I for one need to do it once I get a damn job.
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