I assume you are talking about the bottom seal where the cover threads on ? always had better luck with the flat one and as far as I know there isn't a special lower cover made for o-rings. The one that gives me a headache is the center one between the covers, always an issue to install and have the covers slide freely, anybody have any tricks for this ? Tim
no. i am talking about the one between the covers where they slide. i believe there r 2 styles. one designed with the flat rubber, the other with an O ring. i believe i am trying to replace the O ring style. just don't remember where they came from.
I've been putting o rings on the early style "screw together" covers for big twins for years. I've used commercially available standardized sizes as well as the later sportster tappet block "O" ring. A hint to make them easier to slide up and down, run a thin ring of oil around the juncture of the two parts of the cover, (I usually have 20-50 in my squirt can), give it a minute to seep around the O ring, and moving it will be much easier. DL