Thread: Front cam cover seal oil leak

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Originally Posted by pat mccarthy

yes it was right now i building a engine that as no rear main seal no rope no rubber not one thing i spent sometime looking it over as i did not take it apart.... it has a slinger on the crank hub and a U groove in the block and cap the main cap is drill with a drain tube for run off dumps in the oil pan. hard to think they never used a seal ? its a first for me good thing is i did not have to play with a rope seal .bad thing is i spent more time making sure it did not need some kind of felt or leather or rope seal

It sounds like the ones we have at work, our centrifuges don't use a rope or rubber medium either. It has what's known as a labrynth seal. Works fine as long as they maintain a slight negative pressure inside! Keep a good PCV system in that motor!