Clearcoat over polished aluminum


Information and questions on GL1100 Goldwings (1980-1983)
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PAPete
Posts: 49
Joined: Sat Apr 17, 2010 9:39 pm
Location: Kennett Square, PA
Motorcycle: 1985 GL1200-A
1982 GL1100-I

Clearcoat over polished aluminum

Post by PAPete » Wed Jul 27, 2011 8:58 pm



After reading the How-To on polishing aluminum, I polished up the valve covers on my 82 GL1100-I, since they were off anyway, waiting for a valve adjustment. I wet sanded first with 400, then 1000, then 1500 grit (2000 wasn't readily available). Then I buffed with 000 and then 0000 steel wool and finished up with Mother's aluminum polish. I'm very pleased with the shine I got; looks like chrome, not aluminum.
In an effort to keep them that way, I'm considering Duplicolor clearcoat for engines, good to 500°F. They also make a version that is good to 724°F. Which one is recommended for valve covers? Anyone tried both? Thanks


Pete
82 GL1100-I
85 GL 1200-A

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RoadRogue
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Re: Clearcoat over polished aluminum

Post by RoadRogue » Wed Jul 27, 2011 10:50 pm

I wouldnt use any clear coat,you can maintain the shine with a little Never-Dull or Mothers once a month or so and then any auto wax . I have tried using other clear coats and wasnt happy with the result. I went to all that trouble to polish things up and the clear actually took away from the shine some, now I had this clear layer that needed to be stripped off to get back to where I was already.Just my 2 cents worth.
Ride safe, Todd
Over night campers welcome

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MJSantos
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Motorcycle: 1983 GL1100I
1983 GL1100 Custom
2002 Shadow
1983 Honda Magna V45
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Re: Clearcoat over polished aluminum

Post by MJSantos » Thu Jul 28, 2011 7:12 pm

Agree, no clearcoat. They might look fine initially but they will discolor and if you get a chip your back to square one. I left my stuff alone and now take Mothers with an old gym sock and give them a quick once over. Put your hand inside ,the sock apply with two fingers then rotate the sock and polish.

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PAPete
Posts: 49
Joined: Sat Apr 17, 2010 9:39 pm
Location: Kennett Square, PA
Motorcycle: 1985 GL1200-A
1982 GL1100-I

Re: Clearcoat over polished aluminum

Post by PAPete » Thu Jul 28, 2011 8:14 pm

Thank you both for the replies. I'll take your advice.
Pete
82 GL1100-I
85 GL 1200-A

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PAPete
Posts: 49
Joined: Sat Apr 17, 2010 9:39 pm
Location: Kennett Square, PA
Motorcycle: 1985 GL1200-A
1982 GL1100-I

Re: Clearcoat over polished aluminum

Post by PAPete » Thu Jul 28, 2011 8:18 pm

RoadRogue wrote:I wouldnt use any clear coat,you can maintain the shine with a little Never-Dull or Mothers once a month or so and then any auto wax .
I just noticed that you mentioned auto wax. Does that help? I thought that maybe the heat would be a problem for it. Not true?
Pete
82 GL1100-I
85 GL 1200-A

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ACEWINGER
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Motorcycle: 1986 gl1200 interstate

Re: Clearcoat over polished aluminum

Post by ACEWINGER » Thu Jul 28, 2011 8:20 pm

I agree DONT clear coat. I did it before and it ended up looking horrible after a few months

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RoadRogue
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Re: Clearcoat over polished aluminum

Post by RoadRogue » Thu Jul 28, 2011 11:15 pm

the Idea behind waxing the polished aluminum is to provide an oxygen barrier for the metal. While aluminum doesnt rust like steel does,it does oxidize (rust) . This aluminum oxide is what makes your shiney bits look dull,polishing removes this thin layer and lets the shine through.Waxing helps keep the oxygen from attacking the carefully polished metal.

I havnt had any problem with auto wax reacting to the heat of the engine.
Ride safe, Todd
Over night campers welcome

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PAPete
Posts: 49
Joined: Sat Apr 17, 2010 9:39 pm
Location: Kennett Square, PA
Motorcycle: 1985 GL1200-A
1982 GL1100-I

Re: Clearcoat over polished aluminum

Post by PAPete » Fri Jul 29, 2011 7:56 am

Thanks for the information. I'll give it a try. I sure do appreciate all the help from this board. Thanks again.
Pete
82 GL1100-I
85 GL 1200-A

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RoadRogue
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Re: Clearcoat over polished aluminum

Post by RoadRogue » Fri Jul 29, 2011 10:31 pm

No problem, thats why we hang out here.glad we could help.


Ride safe, Todd
Over night campers welcome

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