Originally Posted by JohnRR
Originally Posted by B1MAXX
Fine.



iagree


That hole could be blocked by half and still get more than enough oil to the head.

I've oiled the entire head through a .063 hole at 7500 RPM and had just a touch of rocker wear after a few hundred runs. And my rod bearings thanked me.

Concentrate on the right side galley and the passages to the mains. The rest of it is already too big.

I'm assuming a small block.

Last edited by CMcAllister; 02/05/24 08:17 PM.
If the results don't match the theory, change the theory.