Thruxton R TPS Cover Corrosion - Page 4 - Triumph Forum: Triumph Rat Motorcycle Forums
Water Cooled Twins Talk Discussion of water cooled Triumph Twin related matters and topics.

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post #31 of 46 (permalink) Old 01-09-2017, 04:16 PM Thread Starter
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Originally Posted by zurf1972 View Post
Hi guys...FYI...




Yes, clearly this part did not undergo typical passivation schemes common to vehicles
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post #32 of 46 (permalink) Old 01-09-2017, 04:17 PM
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Car wash soap has always caused my aluminum engine cases to look like they just took a salt bath, even road wash that gets baked onto the engine. I polish the engine cases on all my bikes frequently and esp after i get caught in rain as they look just like OP. As far as i can see this in nothing out of ordinary.
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post #33 of 46 (permalink) Old 01-09-2017, 06:29 PM Thread Starter
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Car wash soap has always caused my aluminum engine cases to look like they just took a salt bath, even road wash that gets baked onto the engine. I polish the engine cases on all my bikes frequently and esp after i get caught in rain as they look just like OP. As far as i can see this in nothing out of ordinary.
It's not the soap, you have (probably very) hard water. That is not the problem here, because, again, every other piece of bare aluminum looks cherry mint, and it began within days of ownership. It looked nearly as bad weeks before it ever got a bath.

If your engine cases look like this after a wash, you need to stop washing your bike with sulphuric acid...

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post #34 of 46 (permalink) Old 01-09-2017, 07:04 PM
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There was a thread here some time ago about this and someone polished theirs up very nicely. Once polished, could one spray some clear enamel over it or something? I don't know anything about this stuff.
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post #35 of 46 (permalink) Old 01-09-2017, 08:43 PM
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Looking at your above pic, I'd say they just used some NOS from 1902. Provide that authentic vintage look.
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post #36 of 46 (permalink) Old 01-10-2017, 12:34 AM
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There was a thread here some time ago about this and someone polished theirs up very nicely. Once polished, could one spray some clear enamel over it or something? I don't know anything about this stuff.
Probably this one, member looseparts also found some discoloration and spotting on his R:

https://www.triumphrat.net/club-cafe/...oloration.html
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post #37 of 46 (permalink) Old 01-10-2017, 02:02 AM Thread Starter
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Probably this one, member looseparts also found some discoloration and spotting on his R:

https://www.triumphrat.net/club-cafe/...oloration.html
Going to the dealer tomorrow. Fixing them up will be a pain without removing, but we'll see what they say about a warranty exchange. TPS plates will help when they arrive. Gonna Cquartz the rest.
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post #38 of 46 (permalink) Old 01-10-2017, 02:05 AM Thread Starter
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Also, noticed on the other thread that oxidation is occurring in the exact same spots - the TPS cover and the top portion of the throttle body cover, with the center portion much less affected. There is definitely a problem with these.
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post #39 of 46 (permalink) Old 01-10-2017, 06:31 AM
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I have had my side covers replaced on my t120 after 4 months there was corrosion starting but dealer happily changed under warranty


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post #40 of 46 (permalink) Old 01-10-2017, 12:49 PM
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This problem was foreseen as early as the press launches last year. Scroll about 3/4 down the page here for some discussion:

http://www.mcnews.com.au/triumph-t12...torcycle-test/

The throttle bodies on my T120 are still looking good, but then again I live in a desert where the humidity is under 5% most of the time. I never wash any motorcycle, since water causes corrosion and damage to fasteners and electrical contacts and switches.

It's interesting that these covers are corroding on your bike, but the bare aluminum transmission and alternator covers are not.

Maybe Triumph can be convinced to replace these parts under warranty, but I doubt it. After all, what you'd end up with is brand new parts that will corrode in the same way.
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