Quote:
Originally Posted by Prowbar
Do these serrations interfere with the sealing capability of the lip seal?
Should one have to regrind the seal surface on the crank for the seal to work properly?
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The way the serrations is made on the shaft, as the crankshaft rotate the serrations try to pull the excess oil back into the crankcase. And the rope seal works very well with this because it has a wide surface for the seal to work with.
The rubber seal (as I understand it) needs a smooth surface, just like the front seal has on the crankshaft hub. It only has a thin lip that make contact with the shaft.
I don't know if placing a rubber seal on a shaft with serrations would be any better or not. In my opinions I think the rope seal is better and the rubber seal. The rubber seal on the serrations could be more prone to leakage due to the serrations.