Oil distribution system for an internal combustion engine valvetrain

An oil distribution system (10) for an internal combustion engine valvetrain, said oil distribution system comprising:

• a rocker arm base member (100) having a base upper surface (102), a base lower surface (104), a plurality of sidewalls (106) spanning a distance between the base upper surface and the base lower surface, and a plurality of base mounting holes (108) extending from the base upper surface through the base lower surface, said rocker arm base member comprising:
• a distribution slot (110) disposed in the base lower surface;
• a plurality of oil receiving holes (120) wherein at least a first set of the plurality of oil receiving holes extends from at least one sidewall of the plurality of sidewalls;
• and
• a plurality of oil distribution holes (130) passing from the distribution slot through the base upper surface;
• and
• a base plate (200) configured to cover at least a portion of the base lower surface including at least a portion of the distribution slot;
• and
• wherein the distribution slot is configured to receive oil from the plurality of oil receiving holes and pass at least a first portion of the oil to the plurality of oil distribution holes, and wherein said oil distribution holes are configured to discharge at least a second portion of the oil past the base upper surface.