Holes in k frame

[Princess Valiant]

So this is the 3rd k frame I have noticed has this hole in it and I'm wondering why that is there and why is it that the k frames from the 60s seem to have it and the later ones in n the 70s do not.

What would be the reason the factory would drill a hole under the motor mount??

 

[Alaskan_TA]

Likely punched vs. drilled like the punched oval hole above it.

 

[Professor Fate]

See the dimple in the motor mount beneath the stud? That rests in the hole in the K frame that you mentioned. Helps to keep the mount aligned as it's tightened, especially on the assembly line using power tools. The other side is the same with a matching hole in the block mount.

 

[Dana67Dart]

Might also be for jigging during welding assembly

 

[Swinger 340]

View attachment 1715854210
See the dimple in the motor mount beneath the stud? That rests in the hole in the K frame that you mentioned. Helps to keep the mount aligned as it's tightened, especially on the assembly line using power tools. The other side is the same with a matching hole in the block mount.

Yes,you are correct. I have seen mounts spun with the motor attached. I'm sure during installation and not corrected.