Rocker box - silver paint or gasket?

Classic short-frame models

Rocker box - silver paint or gasket?

Postby jOe » Fri Sep 17, 2021 10:39 pm

The book calls for silver paint for rocker box to cylinder head. Gaskets aren’t depicted or mentioned in the book. Yet rocker box gaskets are always included in gasket sets. ? We’re gaskets used in post 1969 applications? Just wondering.
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Re: Rocker box - silver paint or gasket?

Postby chuckthebeatertruck » Tue Sep 21, 2021 3:30 pm

AFAIK, rocker gaskets start with 1000cc motors.

Gasket sets often include extra stuff.


Many rockers get damaged . . and gaskets keep leaks at bay for those not wanting to resurface.
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Re: Rocker box - silver paint or gasket?

Postby dlxl66elxl » Tue Sep 21, 2021 4:23 pm

I use either Yamaha Bond or clear silicon. Both work well.
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Re: Rocker box - silver paint or gasket?

Postby jOe » Tue Sep 21, 2021 5:29 pm

I have an ancient can of silver paint for the purpose that I’ve been using for a long time. Same stuff I used on K heads. Silicone? Mike was always adamant about not using it anywhere on the motor. As I recall, the only rocker box leaks I had were with gaskets.
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Re: Rocker box - silver paint or gasket?

Postby dlxl66elxl » Tue Sep 21, 2021 5:43 pm

Yes Mike had a point, never use the stuff where it has a chance of getting into oil passages. My XR750 builder buddies put me on to the silicon, a very thin layer. They used it as they were constantly rebuilding motors.
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Re: Rocker box - silver paint or gasket?

Postby chuckthebeatertruck » Tue Sep 21, 2021 6:12 pm

There are several different grades of yamabond or three bond (same company)

1100 series is what we want for motorcycles -- non hardening liquid gasket.

1200 series is also sold with the same "names" but is silicone RTV. Very different but the packaging looks nearly identical.
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Re: Rocker box - silver paint or gasket?

Postby jOe » Tue Sep 21, 2021 6:17 pm

What’s the torque on the rocker box bolts? 22ft/lb?
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