coating on intakes


Information and questions on GL1200 Goldwings (1984-1987)
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jboughto70
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1986 Honda Goldwing Aspencade GL1200a
1996 Yamaha Virago XV750

coating on intakes

Post by jboughto70 »



I am in the process of polishing up all the metal on my gl1200a and the intake manifolds? (between the carbs and the valves) have a yellowish tint that seems to be a coating that is supposed to be there. Is there any reason I can't wire wheel this coating off and polish the metal? I don't think this is oxidation, I'm pretty sure its a coating to keep it from rusting.


joecoolsuncle
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Re: coating on intakes

Post by joecoolsuncle »

it is a clear to keep the aluminum from oxidizing and having to be polished on a regular basis. if you are able and willing to polish at a pro level, you will only have to renew polishing a couple times a year. or, have them soda blasted, or other medium fit for the job, and re-clear. i would do the latter.
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Re: coating on intakes

Post by WingAdmin »

Agreed - if you're going to removed the yellowed clear-coat, then once you've polished them shiny, I would re-apply a clearcoat. Otherwise, you're going to find them pitted and oxidized in a fairly short amount of time. Make sure any clearcoat you use can take the heat it will see in that application.
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dingdong
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Re: coating on intakes

Post by dingdong »

I rebuilt my 76 17 years and 50k miles ago. one of the rebuilding steps was to polish the carb intakes, valve covers, timing covers and front forks. I don't remember why but the intakes I clear coated all the rest I only polished. Now after 17 years the valve covers etc. look great. While the intakes are yellowing and the clear coat is flaking. I do however repolish using only Turtle Wax a coup!e of times a gear. Probably doesn't take 30 minutes. No clear coat for me. No runs, no drips no errors. JMHO.
jboughto70
Posts: 4
Joined: Fri May 21, 2021 6:28 am
Location: United States
Motorcycle: Logansport, In.
1986 Honda Goldwing Aspencade GL1200a
1996 Yamaha Virago XV750

Re: coating on intakes

Post by jboughto70 »

I am in Indiana and it is quite humid here all the time, everything rusts and even wood on houses falls apart, so I willl probably need to clear coat like those others were saying. Some of the coating on the intakes and the side covers have chinks/scratches in them, thats why I was polishing down to the metal. Thanks for the replies everyone.


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