Oil Slinger.

I never run them anymore. Two times now I have checked engines, built by others, before running on the dyno, where the 'oil slinger' was pressing against the damper seal inside the timing cover. Checked the #3 main bearing thrust and the oil slinger acted like a spring and it would push the crank up tight against the thrust surface. Had we run those engines like that it would have immediately wipe out the #3 bearing.

I drill a .030-.040 hole in the oil galley plug behind the cam gear to spray oil directly on the timing gear/chain to keep it lubed and have no damper seal leaks without that "slinger".