1974 AC Cheetah Engine Questions Nov 1, 2009 21:54:37 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by olrusty70 on Nov 1, 2009 21:54:37 GMT -5 I am rebuilding a 74 cheetah 340cc and i was woundering if anyone knew that the size of the O-Rings were that go on the crank bearings? Thanks guys And Let it snow!!!!!!!!!