Head Boogers on gasket?

4 replies to this topic
  • MotoGoalie

Posted March 15, 2006 - 07:32 AM


Posted Image

Any of you seen these large gasket mouldings with excess material like this?

I was wondering aloud if these pieces came loose, would they plug up oil lines and cause a catastrophic failure? Whatever, I cut them off before I buttoned it all back together.

  • grayracer513

Posted March 15, 2006 - 07:41 AM


If it's rubber casting "flash", part of the gasket, it will probably never come off. If it did, it would sit harmlessly on the pick up screen in the sump. Excess sealer would be a little more worrisome, but it would still take a synchronized series of unfortunate events for it to cause trouble.

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  • MotoGoalie

Posted March 15, 2006 - 08:04 AM


Ok, that's cool. There was quite a bit of this 'flash' hanging around the various areas.

BTW, all valves were well within specs.

Love my Yamaha.

  • grayracer513

Posted March 15, 2006 - 08:14 AM


BTW, all valves were well within specs.

Who would have guessed? :thumbsup:


  • tom nolan

Posted March 15, 2006 - 08:14 AM


If someone put extra sealer (rtv) on the valve cover gasket that means it was probably leaking oil. To solve this problem, you have to change the oil seals that go around the cap screws on top of the valve covers. These seals provide pressure for the gasket to seat against the flange, and when they flatten, no pressure. I kept having a problem of a leaking gasket until I changed those seals.

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