Location for oil holes on rocker arms?

PRH said

You did mention it, and there were comments about how there “needed” to be a hole on the spring side.
I knew there were no holes on the HS rockers, which I why I asked the question.
To let people connect the dots........ that maybe a bunch of oil going to the valve side may not be necessary after all.

There is no direct oiling to the bearings or roller tip on most Jesel rockers either.

Click to expand...

It may not be needed. I know the oil hole is an option on T&D stuff.

I know that changing oil made my spring life triple or better on my drag stuff. Especially when you have two or three springs running on each other the heat from that alone is a killer. That’s one time when I want pressurized oil on the springs. Will it cost some power. I bet it would. But for what I was doing the extra spring life was a good trade off for some windage loss, which I tried to mitigate with a crank scraper and full length kick out pan.