Maybe one way to increase rocker oiling without the full groove would be to chamfer the
holes in the journal slightly to increase a bit the time the block galleries are exposed to pressure
without too much oil being diverted from the rods.

Joe

PS Similar to, (but not exactly) the reason for grooved rocker shafts and 3/4 grooved main bearings

Last edited by jlatessa; 01/08/21 11:49 AM.