Drill the crank?

[old grumpy]

Can anyone tell me about drilling the crankshaft. It is often said that it is good to make an extra oil channel from the middle (third) main bearing journal to the second and third con rod journal. (have I got it right?)

How is this done properly?

 

[twospeed]

A very very good crank grinder can help you with this-------dont even try it at home.

 

[old grumpy]

A very very good crank grinder can help you with this-------dont even try it at home.

Not just a very good one, but a very very good one.
I suppose my hand drill will not do!