What silicone do you use? - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 17 (permalink) Old 04-12-2015, 06:20 PM Thread Starter
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What silicone do you use?

I am getting packages in the mail...that means my parts are finally arriving! Like Christmas everyday! Anyway, I am about to install all new gaskets, but partzilla doesn't show a gasket for the right cover. When I removed it there was no gasket just some silicone. What are you guys using to seal up the non-gasketed surfaces? Would autopart store, black rtv (oil and water) silicone work?
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post #2 of 17 (permalink) Old 04-12-2015, 06:55 PM
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Which right cover are you referring to?
If it's the clutch cover, it uses an o-ring type gasket.
For covers that don't use gaskets, a thin layer of 3bond or Yama bond will work fine.
Just make sure to apply in a thin layer to prevent globs of it from attaching to the surface on the interior side that can break off and get suckered into the oil pump, and then into the oil galleries.
That can prevent oil flow and destroy the engine.
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post #3 of 17 (permalink) Old 04-12-2015, 07:25 PM Thread Starter
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http://www.partzilla.com/parts/searc...VER/parts.html

This cover. I know the water pump has a gasket but the big cover does not. Also, what is the gold color coating? Is it factory paint? I ask because there is some areas where mine has worn off.

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post #4 of 17 (permalink) Old 04-12-2015, 07:29 PM
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The gold coloring is probably anodizing.
The right covers and valve covers are magnesium.
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post #5 of 17 (permalink) Old 04-12-2015, 07:52 PM Thread Starter
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Ya, I saw the word magnesium on the cover. What do we do, or is there anything we can do once that gold color rubs off? Is it something we should worry about? I am pretty sure the metal underneath it is aluminum so rust shouldn't be a concern. Its just something I noticed while I am trying to solve this water/oil mixing issue and became curious about the gold color.
Thanks Sub
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BTW, I have spent lots of time down in Florida, and I think Sarasota is on top of my list for places I would return to. Its a great place, and the gulf is so nice there.
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post #6 of 17 (permalink) Old 04-12-2015, 11:23 PM
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Do not use silicone inside the engine. It comes off settles in the bottom of the oil pan then gets sucked up into the oil pump screen which can starve the top end for oil.

The cover is magnesium and will corrode quickly if left as bare metal. That being said it can easily be polished



or transparent pigmented clearcoated





or powdercoated




or replaced with aftermarket
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post #7 of 17 (permalink) Old 04-13-2015, 06:14 AM Thread Starter
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Ya, I had a feeling the silicone on this motor was wrong! Shade tree mechanics FTW!
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post #8 of 17 (permalink) Old 04-13-2015, 02:08 PM
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The only sealant I will use is Loctite 5699. It's not cheap but it is the best IMO.

2001 RC51 SP1 (modified)
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post #9 of 17 (permalink) Old 04-13-2015, 02:46 PM Thread Starter
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Thanks Brit. I'll look it up and give it a try.
Canty.
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post #10 of 17 (permalink) Old 04-18-2015, 01:39 PM
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Quote:
Originally Posted by LDH® View Post
Do not use silicone inside the engine. It comes off settles in the bottom of the oil pan then gets sucked up into the oil pump screen which can starve the top end for oil.
What's wrong with silicone? I've used Permatex silicone on a couple engines with no problems; one of those was a track motor too. I would think the problem for any kind of sealant is applying the right amount; too much of any kind of sealant could clog oil passages.
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