[Barry_R]

I seem to have no real problem with the Scat crank's having no seal "knurl". the knurl was very common on OE cranks in the days of rope seals, and carried over for many years after they went to neoprene. If you look at the neoprene or viton seals they often have those grooves/knurls molded into the seal lip. Most new OE cranks do not use the knurled rear surface anymore.

FE's still seem to be an oil leak waiting to happen though. Even when they go together and dyno run dry it's not unusual for them to seep somewhere down the road. I think Keith Craft touched on this subject in another thread a few months ago.