Cam cover gasket - Yamaha FJR Forum : Yamaha FJR Owners Forums
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post #1 of 7 (permalink) Old 10-15-2020, 02:36 AM Thread Starter
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Cam cover gasket

Are you using sealer or dry on the cam cover gasket?
Ray, where are you?

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post #2 of 7 (permalink) Old 10-15-2020, 08:09 AM
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I've replaced but only one, at the owner's request. Mostly they may stay in place on the valve cover, but if they don't, I remove and clean the groove and the mating ridge on the gasket. Final clean with isopropanol. Then I sparingly use RTV in the groove, install the gasket, press in, let sit for an hour before putting it back on. Clean off any stray RTV on the inside of course.

There are other "adhesives" for that job, but RTV works.
It helps to have a helper keep stuff out of the way while you reinstall the valve cover... don't want to contact anything (if possible) that will knock the gasket out of place... worst spot is that coolant hose, left front, gotta push on it forward before you can get the cover down. Then check the side half moons are seated properly.

Ray
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post #3 of 7 (permalink) Old 10-15-2020, 12:34 PM
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I'll used yamabond or equivalent wherever the FSM requires. A trick that I learned was to apply the sealant with your finger. Dabbing it leaves just enough to create a seal without any excess.
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post #4 of 7 (permalink) Old 10-15-2020, 01:16 PM
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The FSM requires Yamabond but I would assume any high temp silicone will do. Make sure to put globs at the half moon corners as pictured in the FSM. I do this to all overhead cam valve covers.
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post #5 of 7 (permalink) Old 10-15-2020, 04:59 PM
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Good ol' high temperature Permatex after a good cleaning does the trick too.
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post #6 of 7 (permalink) Old 10-15-2020, 07:20 PM
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yup, even with a new gasket, a very thin layer of Permatex all the way around always works for me.... never a leak.
AND, double check fitment before snugging down the bolts!
Mr. BR
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post #7 of 7 (permalink) Old 10-16-2020, 01:30 AM Thread Starter
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I'm old school too, I used the #2 Permatex non hardening in the corners of the halfmoons, and on the surface of them. I like Yamabond, just didn't have any. I used Three Bond 1104 for years. A little dab'll do you. Thanks.

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