Welp mine wasn’t! Thats the fing point. I wasn’t getting crapola out of my top end when hand priming at 60psi. SOMETHING was wrong and I needed to understand what. I was in a debugging mode trying to understand how the system worked.
1) this horse has been beat to death.
2) you never stated that in your initial post. You asked how does it work.
3) hand turning and priming an engine due to the geometry involved and oil paths does not always insure you get oil to the top during that procedure.
4) Rusty is a crank old b*stard but he knows his sh*t.
Syleng1