Blotchy 919 Headers - Wrist Twisters
 
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post #1 of 8 Old 10-03-2016, 04:08 PM Thread Starter
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Blotchy 919 Headers

Hey all,

Ever since I bought my 2007 919, it's had brown blotches at the bend in the headers off the engine. It had 3,700 miles on it when I bought it so I figured they would continue to turn blue or that it would polish out. It's got nearly 12k on it now, and the splotches are still just as present. I bought some different metal polishes in hopes that they would help (trying them on one pipe as you can see in the attached picture.) It's shinier, but still splotchy.

Any idea why they look like this or how to make them look real purdy?

(Please disregard the filthy condition she's in.)

Thanks!
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post #2 of 8 Old 10-04-2016, 09:18 AM
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There are a bunch of threads on the stainless steel header cleaning that you can find w/ a search. The one below is pretty good. No question you can make your pipes look like new!

https://www.wristtwisters.com/forums/...=header+polish

Hopefully I've put in the link properly. If not you should still be able to find it...

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post #3 of 8 Old 10-04-2016, 09:38 AM Thread Starter
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I'm pretty new to the forum so the search function didn't even occur to me. I did just by a Power Ball polishing tool that chucks up in a power drill, I'm gonna try that with the polishes and see if it helps. If I do this all by hand I'll have tendinitis by the time I'm done!

I'll update with pictures.

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post #4 of 8 Old 10-05-2016, 04:34 PM
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I found trying compounds first was taking way too long.
So I tried using wet paper.
(very wet, used a bucket of water, repeated dipping and swishing off the paper plus splashing off the header, all to prevent a slurry buildup on the paper or metal of paper abrasive and what was coming off the metal)
400 for the initial knockdown, then 600, then compound with a rag.
Worked like a charm.

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post #5 of 8 Old 10-05-2016, 05:15 PM Thread Starter
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I used 1000 and 1500 grit sandpaper with soap water to remove the splotches, followed up with Mother's Mag and Aluminum Polish. Shined up nicely. Mother's was lightening the splotches unlike NEVR-DULL and Turtle Wax. (Yout can still see them on the left 3 toward the upper bend, I got lazy and didn't use sandpaper on those.) Went for about a 150 mile ride today with a good amount of high rev, high speed action. Still shiny When we get some more nasty weather I'll go more detailed up near the engine and further down.
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post #6 of 8 Old 10-05-2016, 05:43 PM
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Damn those look good. I might have to clean mine now...

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post #7 of 8 Old 10-05-2016, 06:46 PM Thread Starter
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I did notice that, with a flashlight, I could still see some sanding marks from the 1000 grit. I think if I spend a little more time with the 1500 and keep it WET i can get even shinier. Like I said, that's for crap weather days. In the meantime, my damn back hurts from doing detailing yoga on the concrete floor. I thought about seeing what I could do with the muffler heat shields but that's a big surface area that already looks decent, and might get replaced if I do get some new cans.

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post #8 of 8 Old 10-06-2016, 11:30 AM
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Quote:
Originally Posted by Whelan View Post
I used 1000 and 1500 grit sandpaper with soap water to remove the splotches, followed up with Mother's Mag and Aluminum Polish. Shined up nicely. Mother's was lightening the splotches unlike NEVR-DULL and Turtle Wax. (Yout can still see them on the left 3 toward the upper bend, I got lazy and didn't use sandpaper on those.) Went for about a 150 mile ride today with a good amount of high rev, high speed action. Still shiny When we get some more nasty weather I'll go more detailed up near the engine and further down.
Hmmm, it's been so long since I did mine but reading the above prompted me to remember also using some crocus cloth after the wet papers then moving to compound.

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