I want to remove the balls that are peened into the crank throws and replace them with screw in plugs. I want to make sure that the crank is really clean inside and out. You don't want to why. It goes back 20 years.
Anyway, I have a junk crank that I popped one of the balls out. The hole is already perfect for a 1/8-27 npt or a 10mm-1.25 tapped hole. The problem is THIS SHIT IS HARD.
The question is, has anyone done this? Were there any elegantly simple solutions or do I have to pony up and buy a cobalt or carbide tap.
Don't tell me to send it to someone. That someone already had the crank and sent it back. They did the needed repairs but failed to read the emails, packing list and the note that was rubber banded to the crankshaft to replace the balls with screw in plugs
![Neutral :|](https://www.suzukihayabusa.org/forum/Smileys/default/icon_neutral.gif)
I've got skills and a shop to match but I'm never afraid to ask.
Thanks,
Tom