Has anyone ever heard of a "sand seal pully"?  Does this require special 
venting of the crankcase?

Thanks,
...Markus

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'66 "rough looker, hackjob skylit, soon to be sunroofed"
                         Westy aka "The Tardis"
                        (british racing green/white)
'74  Thing              (pumpkin orange)
'78  Bug 'vert          (black, white top)