exhaust headers turned blue - Kawasaki Versys Forum
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post #1 of 22 (permalink) Old 07-25-2018, 10:19 AM Thread Starter
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exhaust headers turned blue

Just noticed the exhaust headers have turned blue at the top (2016 V650). Is this normal on these bikes? Engine runs well with no noticeable problems. My 2014 Ninja 650 has this same condition. Wondering...?

Last edited by SmoothRoad; 07-25-2018 at 02:44 PM.
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post #2 of 22 (permalink) Old 07-25-2018, 10:36 AM
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It's normal for pipes to blue with time.
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Originally Posted by SmoothRoad View Post
Just noticed the exhaust headers have turned blue at the top (2016 V650). Is this normal on these bikes? Engine runs well with no noticeable problems. However, my 2014 Ninja 650 does not have this condition. Wondering...?
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post #3 of 22 (permalink) Old 07-25-2018, 10:58 AM
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Most common cause is engine running too lean.

Or It could be caused by letting engine over heat from moving slow for long periods(heavy traffic, parades, etc.) not allowing enough airflow to blow off the heat.

It could also be caused from fuel mix not completely burning in the combustion chamber, (either due to a too rich mix, malfunctioning coil, burned valve, improper timing, etc) and ignites inside the exhaust. This usually causes the bluing to be further down the pipe, rather than close to the head
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post #4 of 22 (permalink) Old 07-25-2018, 11:16 AM
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I googled how to clean stainless steel motorcycle exhaust pipes last winter and went with the homemade option,toilet bowl cleaner.The cheap stuff,with some acid in it to reverse the oxidization I believe the process is.And a fine scuff pad,or steel wool or fine emory paper.Wear latex gloves,paint brush and cover the rest of the bike.down there.The blue hasn't come back,strictly cosmetic job!
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post #5 of 22 (permalink) Old 07-25-2018, 12:27 PM
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Autosol and very fine steel wool (#000)does the trick.....https://www.amazon.com/Autosol-Polis...=autosol&psc=1

Or if you want a more specific product but a higher price....https://www.amazon.com/Autosol-EO129...ywords=autosol

IMG_1496 by weljo2001, on Flickr
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post #6 of 22 (permalink) Old 07-25-2018, 12:56 PM Thread Starter
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Thanks weljo, but before buying another product, I have some Turtle Wax Chrome and Metal polish that's been setting for ages on my garage shelf. Gonna give that a try first. After lunch that is.
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post #7 of 22 (permalink) Old 07-25-2018, 02:49 PM Thread Starter
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FWIW, I tried the Turtle Wax Chrome and Metal polish and it doesn't remove bluing. Now that I see the Ninja 650 has bluing as well (I didn't notice it at first) I figure it's a normal condition.
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post #8 of 22 (permalink) Old 07-25-2018, 04:26 PM
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It's normal
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post #9 of 22 (permalink) Old 07-25-2018, 06:38 PM
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Quote:
Originally Posted by jaaklucas View Post
I googled how to clean stainless steel motorcycle exhaust pipes last winter and went with the homemade option,toilet bowl cleaner.The cheap stuff,with some acid in it to reverse the oxidization I believe the process is.And a fine scuff pad,or steel wool or fine emory paper.Wear latex gloves,paint brush and cover the rest of the bike.down there.The blue hasn't come back,strictly cosmetic job!
We had an Irishman name of "Davey" a few years back, and he regularly did what weljo did, and wrote-up a "how-to".

I THOUGHT about doing it..., then went to the fridge and got a beer.... Check the pics.

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post #10 of 22 (permalink) Old 07-25-2018, 07:30 PM
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We had an Irishman name of "Davey" a few years back, and he regularly did what weljo did, and wrote-up a "how-to".

I THOUGHT about doing it..., then went to the fridge and got a beer.... Check the pics.



I miss my drinking days.....

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post #11 of 22 (permalink) Old 07-25-2018, 10:24 PM
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Use to be a product called blue away that will work if it's still made

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post #12 of 22 (permalink) Old 07-25-2018, 10:27 PM
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Quote:
Originally Posted by weljo2001 View Post
Autosol and very fine steel wool (#000)does the trick.....https://www.amazon.com/Autosol-Polis...=autosol&psc=1

Or if you want a more specific product but a higher price....https://www.amazon.com/Autosol-EO129...ywords=autosol

IMG_1496 by weljo2001, on Flickr
How long did it last-because every time I have done that on many bikes within a few hundred miles it was right back to the same brown color

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post #13 of 22 (permalink) Old 07-25-2018, 10:38 PM
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weljo2001 had an aftermarket Delkevic header made of T304 Austenitic stainless steel... OEM header is made of T409 Martensitic stainless steel as used for automotive exhaust applications. My Muzzy T304SS header actually turns gold instead of blue.
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post #14 of 22 (permalink) Old 07-26-2018, 06:28 AM
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https://www.westyorkssteel.com/techn...-temperatures/

It means you have held very high rpms for too long....lol
If you tend to exceed 7000 rpms, this is common.
Don't waste you time trying to remove it.
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post #15 of 22 (permalink) Old 07-26-2018, 07:18 AM
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Color changes depends on the type of steel, such as grade 304 stainless steel which shows the opposite.

https://www.bssa.org.uk/topics.php?article=140

Header is often hotter when stopped and idling... Don't panic if it then starts glowing red in the dark.
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post #16 of 22 (permalink) Old 07-26-2018, 08:36 AM
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Normal. A product called Blue Job is popular. I've never worried about it too much. My last bike had stainless headers from the factory, which never blued, which was nice.

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post #17 of 22 (permalink) Old 07-26-2018, 08:35 PM Thread Starter
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Thumbs up Ignoring the blue

Well since it seems to be normal and removing it seems somewhat futile, I'll just ignore it. And go riding instead.
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post #18 of 22 (permalink) Old 07-26-2018, 10:49 PM
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go riding seems the best option. mine was blued, but since riding in northern canadian road construction, has crusty/rusty crap that never came off. baked on road film/corrosion.
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post #19 of 22 (permalink) Old 07-26-2018, 11:41 PM
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Ignore and ride. Exhaust system usually are dirty and a testimony of a rider.
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post #20 of 22 (permalink) Old 07-27-2018, 04:57 PM
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Ignore and ride. Exhaust system usually are dirty and a testimony of a rider.
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