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Author Topic: Brass tarnish after cleaning  (Read 2603 times)

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Offline AndyH

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Brass tarnish after cleaning
« on: October 16, 2017, 08:53:28 PM »
Cleaned a set of Keihin jets and needles yesterday, but the end result leaves them tarnished.  Is this going to be an issue?

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Offline CycleRanger

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Re: Brass tarnish after cleaning
« Reply #1 on: October 16, 2017, 09:33:17 PM »
Shouldn't be a problem. A little tarnish is no big deal, but corrosion would be.
Got some ammonia in the house? Give 'em a little bath, they'll shine right up.
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Offline BomberMann650

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Re: Brass tarnish after cleaning
« Reply #2 on: October 16, 2017, 09:57:10 PM »
Good ol brass patina  8)
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #3 on: October 16, 2017, 11:33:44 PM »
Quote from: CycleRanger on October 16, 2017, 09:33:17 PM
Shouldn't be a problem. A little tarnish is no big deal, but corrosion would be.
Got some ammonia in the house? Give 'em a little bath, they'll shine right up.

OK, giving them a little bath in ammonia. Will report back whether they are sh!te and briney, or I'll live with the patina!  ;D ;D
« Last Edit: October 17, 2017, 12:11:13 AM by AndyH »
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1971 CB750K1 (US import)
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Previously owned..
1967 Honda Sports 90
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1975 Kawasaki KX125
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Offline Deltarider

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Re: Brass tarnish after cleaning
« Reply #4 on: October 16, 2017, 11:53:18 PM »
Toothpaste maybe?
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #5 on: October 17, 2017, 01:37:26 AM »
Quote from: Deltarider on October 16, 2017, 11:53:18 PM
Toothpaste maybe?

A possibility I guess, but I didn't really want to use any abrasive material, regardless of how fine it may be.
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1971 CB750K1 (US import)
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Previously owned..
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BMW R65
BMW R80
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Offline robvangulik

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Re: Brass tarnish after cleaning
« Reply #6 on: October 17, 2017, 02:40:58 AM »
I always use cleaning vinegar, doesn't make my eyes water as much as ammonia  >:(
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #7 on: October 17, 2017, 03:04:28 AM »
Quote from: robvangulik on October 17, 2017, 02:40:58 AM
I always use cleaning vinegar, doesn't make my eyes water as much as ammonia  >:(

I should have been a tad more specific....I'm using cloudy ammonia, readily accessible at many places here as a general purpose cleaner. 20g/litre concentration in the bottle.  Not so eye-watering!  ;D
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1971 CB750K1 (US import)
1972 CB500 Four K1 (SOLD)
Previously owned..
1967 Honda Sports 90
1971 Yamaha CT2 175
1973 Yamaha RD250
1975 Kawasaki KX125
1983 Yamaha XT250T
BMW R65
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Offline Bankerdanny

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Re: Brass tarnish after cleaning
« Reply #8 on: October 17, 2017, 07:40:24 AM »
Shine isn't really important, but that said a little 0000 steel wool will clean up the needles without having any material impact on the size.
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Offline 754

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Re: Brass tarnish after cleaning
« Reply #9 on: October 17, 2017, 09:54:42 AM »
They should be fine,
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Offline Deltarider

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Re: Brass tarnish after cleaning
« Reply #10 on: October 17, 2017, 10:09:10 AM »
Toothpaste is hardly abrasive if at all. Wettened cigar ash is also good, preferably Havana quality. :)
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #11 on: October 17, 2017, 05:30:39 PM »
After an overnight bath in the cloudy ammonia.

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1971 CB750K1 (US import)
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Previously owned..
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Offline CycleRanger

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Re: Brass tarnish after cleaning
« Reply #12 on: October 17, 2017, 05:52:18 PM »
I knew that would work.  :)

If you ever use "Brasso" brass polish you'll notice that it's mostly ammonia mixed with a mild abrasive.
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #13 on: October 17, 2017, 06:04:23 PM »
Many thanks for the tip, CR!  8)
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1971 CB750K1 (US import)
1972 CB500 Four K1 (SOLD)
Previously owned..
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Offline spotty

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Re: Brass tarnish after cleaning
« Reply #14 on: October 17, 2017, 07:23:59 PM »
Quote from: CycleRanger on October 17, 2017, 05:52:18 PM
I knew that would work.  :)

If you ever use "Brasso" brass polish you'll notice that it's mostly ammonia mixed with a mild abrasive.

heres a couple of chaps discussing brasso

 NSFW
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Offline Rocky2010

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Re: Brass tarnish after cleaning
« Reply #15 on: October 17, 2017, 07:39:07 PM »
Turned out great using cloudy ammonia :)
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Offline CycleRanger

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Re: Brass tarnish after cleaning
« Reply #16 on: October 17, 2017, 08:19:36 PM »
Quote from: spotty on October 17, 2017, 07:23:59 PM
Quote from: CycleRanger on October 17, 2017, 05:52:18 PM
I knew that would work.  :)

If you ever use "Brasso" brass polish you'll notice that it's mostly ammonia mixed with a mild abrasive.

heres a couple of chaps discussing brasso

https://www.youtube.com/watch?v=8LIpFTM8q3s   NSFW
ROFL! Oh thanks, now I have to watch them all!  ;D
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Offline AndyH

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Re: Brass tarnish after cleaning
« Reply #17 on: October 18, 2017, 01:43:38 AM »
Quote from: Rocky2010 on October 17, 2017, 07:39:07 PM
Turned out great using cloudy ammonia :)

Certainly did mate!  8)  You located in QLD by any chance?
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1971 CB750K1 (US import)
1972 CB500 Four K1 (SOLD)
Previously owned..
1967 Honda Sports 90
1971 Yamaha CT2 175
1973 Yamaha RD250
1975 Kawasaki KX125
1983 Yamaha XT250T
BMW R65
BMW R80
BMW R100LT
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