oil passage mods

got the 9/16 drill bit from TA to modify the oil passage but it sure looks like there isnt going to be an oil passage left when i'm done???

 

not sure this is the right sized bit from a google search

 

I use 1/2 inch but have done 9/16 before. Did you get a bigger sump ? Melling 20is5 I believe is the number.

 

I've gone up to 5/8" using a piloted bit.

Jim

 

I dilled mine to 37/64" (0.578"), not quite 5/8".