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Valve cover half moon rubber plugs, why needed?

  • Thread starter Thread starter onchiman
  • Start date Start date
Anyone have a reason why I might not use yamabond to fix a leaking half moon?

I don't see why you couldn't. Yamabond is supposed to stay flexible.

I just received mine today. They look great. Nice, tight fit as Lynn said.
 
My aluminum half moons came in today. They don't fit. :cry: The gap between the the two flanges is a tad too small so they won't slide all the way in. The diameter looks OK, they're just too narrow by a hair.

If I can't get a refund I'll donate them to someone here who may have better luck with them. Meanwhile it's back to the rubber ones with a coating of 518 to seal them up again.
 
My aluminum half moons came in today. They don't fit. :cry: The gap between the the two flanges is a tad too small so they won't slide all the way in. The diameter looks OK, they're just too narrow by a hair.

If I can't get a refund I'll donate them to someone here who may have better luck with them. Meanwhile it's back to the rubber ones with a coating of 518 to seal them up again.

Well that's weird! I'll buy them from you if you get stuck with them.
 
Yeah, I was majorly bummed about this. The cylinder head 'wall' measures 6.0 mm thick. The half moons measure 5.6 mm. Too tight to fit.
 
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