Originally Posted by hotrod
If I understand you correctly you appear to have created a "V" drill pattern with your modifications so the runner that carries oil from the main to the rod crank pin picks up the oil near the surface of the journal.
Yep, by having the oil passage like this it reduces resistance in flow in getting the oil to the pin journal. The other benfits being the hole is angled so it picks up oil easier and finally the reduction of centrifugal force acting on the oil flow.
I will be applying this oiling system to my 2.5L crank. The example in the pics was a rough test to see if it was possible which I have proven it is. I think with more time spent doing the job properly I should be able to come up with a very neat setup.
What I took pics of took me about half an hour to throw together and I only used basic hand held tools. I intend to do the 2.5 crank using a mill so I can accurately locate the drilling and improve on the angles.