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Old 11-01-2014, 12:09 PM   #1
Rockwell OP
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Cleaning Exhaust Pipes?

What are the 990 exhaust and exhaust headers made of (stainless steel?), and what are some effective methods of cleaning them? I'm about to do a good scrubbing for winter storage.
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Old 11-01-2014, 12:54 PM   #2
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(950 here) Cannot tell you the metallurgy of the pipes, but I have cleaned mine with simple green and a sponge, simple green and 3m scuff pads (green), Water + scuff pads/sponge/steel wool/brass brush/copper brush for baked on alcan mud and such.
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Old 11-02-2014, 09:53 PM   #3
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Hi Rockwell, the pipes are just brushed stainless steel. You can just use a wire brush to renew them. I put a wire wheel in a drill and just go to it to remove the big stuff. Then wipe them down with brake cleaner.
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Old 11-02-2014, 11:35 PM   #4
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depends on how much stuff you have on there.

I had a good Alaskan summer of mud and road construction plus years of other stuff. I happened to have a wet wipe nearby and tried it. To my surprise it did a great job on all but the oldest baked on stuff
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Old 11-03-2014, 05:29 AM   #5
ebrew
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Wd-40

and a scotch brite pad.
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Old 11-03-2014, 06:13 AM   #6
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Quote:
Originally Posted by Zuber View Post
Hi Rockwell, the pipes are just brushed stainless steel. You can just use a wire brush to renew them. I put a wire wheel in a drill and just go to it to remove the big stuff. Then wipe them down with brake cleaner.
No, they are chromed steel.
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Old 11-03-2014, 06:52 AM   #7
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No, they are chromed steel.
This.

I know for sure all of the 950adv and 950se exhaust pipes are chrome plated mild steel. I would assume the 990 is the same.
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Old 11-03-2014, 07:33 AM   #8
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Ok

Never mind about my cleaning if it chrome
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Old 11-03-2014, 07:45 AM   #9
tinwelp
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I cannot be certain on the 990ADV as I've never owned one, but the other models (which I have owned) all use stainless: 950/990 SM, SMR and SD.

If they are stainless, go to your nearest welding-supplies shop and buy some stainless 'pickling paste'. It's designed to clean all oxides from around TIG welds to ensure the stainless remains stainless.

Remove your pipes, paint liberally with the paste, leave for a few hours or overnight, pressure-wash off. Your pipes will look factory-fresh. If you've very stubborn stains, wire brush in the direction of the existing brushing, and repeat with the paste. The results are incredible.

Be sure to wear eye and hand protection. It's not something you want on your skin!!

Cheers... Paul
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Old 11-03-2014, 09:03 AM   #10
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...
If you've very stubborn stains, wire brush in the direction of the existing brushing, and repeat with the paste.
...
A welding instructor once told me that a wire brush can contaminate the surface of stainless steel, and cause it to rust.
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Old 11-03-2014, 09:12 AM   #11
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Read This
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Old 11-03-2014, 09:32 AM   #12
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My exhaust headers looks just like that. I just skimmed so far, but, at the point in which he cleans his headers, I didn't notice where he said what he used.
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Old 11-03-2014, 09:40 AM   #13
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A welding instructor once told me that a wire brush can contaminate the surface of stainless steel, and cause it to rust.
if the brush is mild steel it will contaminate the surface.

Otherwise some fine scotchbrite type abrasive should do the trick on both mild and stainless.

Use liberal amounts of water etc to carry the baked on dirt/dust away. Pretty much what gozirra posted.
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Old 11-03-2014, 09:45 AM   #14
Sumi
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Nail brush, wd40, water, elbow grease. good luck:)
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Old 11-03-2014, 09:51 AM   #15
MortimerSickle
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BTW, in case anyone has been looking for a brass wire wheel: Harbor Freight carries wire wheels marked "Brass." But, they also carry magnets, and guess what?
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