Those shoot oil to the top of the valve cover to rain down and cool the valve springs
Again, this shoots oil at the valve cover to splash back and lube the cups.
Doesn't lube the threads or dribble down. Once you tighten the nut, nothing's going down those threads!
Don't like the looks of those shafts !!!
(1) I'm doubtful but maybe enough for a DD but definitely not for racing (2) I cant see it happening that way (3) I'm thinking there was a groove in the rocker alongside the threads for oil to dribble down (I will check tomorrow). Yes the shafts in the pic are worn some, not sure if I used those or just pulled em out to see what I had when I was doing the valvetrain setup/mods. EDIT yes oil can dribble down onto the pushrod cup. I knew it did otherwise there would be no need to drill the rocker but I wanted to see how & the threaded hole in the rocker is a bit eggshaped/bellmouthed.
