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''03 K1200 RS Cam Cvr Oil Leak?

98lee

98lee

3 Red Bricks
Staff member
The valve cover gasket is not squeezed by the pressure of the valve cover bolts (they are designed to bottom out, so tightening the further than the 6.5 ft/lb recomended torque will not put any more force on the gasket, but WILL result in stripped threads in the head)

Pressure to seal the gasket relies on the elasticity of the rubber bushings that surround the valve cover (and crank cover) bolts. After time and exposure to heat, these become hard and do not transfer enough squeeze to the gasket. This is very common on older K-bikes. Maybe, because of the increased shrouding that the newer style fairings provide, the newer bikes might have this happen sooner.:dunno

The part number for the bushings is:11141461475 Rubber Bush $1.52ea
You will need 11 of them.


:dance :dance :dance
 
18K on the bike. Neoprene washers are in good shape.

Yes, I'm aware of the cam cover bolt tightening technique and the fact that they "bottom out". I'm using the proper methods as spelled out in the Clymer manual and it still leaks. I'll try the Yamabond next time around. I'm about to ride to Illinois and back so I'll see how much of a mess it makes during the next 3000 miles. Thanks to both of you for your quick response.
 
BuddingGeezer said:
Go to your friendly Yamaha dealer and get some Yamabond. It is with out a doubt the very best sealer I have used. It is expensive around $12 a tube. Coat both sides of the gasket with Yamabond and bolt it up. It won't leak. Some motorcycle mechanics use Yamabond and leave the gaskets out. I have it sealing the oil pan on my K100LT and have used it on several other motorcycle and auto applications. No drips.

Ralph Sims
Click to expand...

I guess I should have added, even though the Yamabond should cure your oil leak, it will be tougher when you check your valves and you might even need a new gasket at that time. Your valve cover could be warped preventing a gasket seal.

Ralph Sims
 
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