Fixing Crank Keyway (1 Viewer)

[landcruiser80]

Hey all. I am in the middle of a rebuild on a 1982 2f engine and I have discovered that the crank keyway is in really bad shape. I have searched and read some threads where Mark W has recommended brazing the key in and fixing it that way. The crankshaft is at the machine shop right now, so I can't get any pictures but here is one I took while disassembling the engine.

It is hard to see, but you can tell that the keyway is worn.

I think it may be to worn to fix using the brazing method. What I need is suggestions from experienced people on how to fix this as replacing the crankshaft is not an option right now...
Could I have the machine shop cut a keyway on the other side of the crank, or is that a bad idea?

I will be stopping by the machine shop tomorrow to look at the crank, get sugestions, and tell them what I want done. Over the phone the machinist said it was not fixable...

 

[3_puppies]

I thought other guys have cut a new keyway into the crank. no first hand experience.

 

[landcruiser80]

OK, I thought I would close this thread like this. I don't like it when people ask questions without searching first, and even though I did search, I was sure this had been discussed before. So I spent some quality time with search and tried out different keywords and came up with these different threads discussing this issue and different ways to fix it.

In the interest of connecting parts of this vast web we call the internet, here are the links to those threads for others to find when searching this issue in the future.
crank (woodruff) keyway trashed -- to braze or not to braze?
Crank Keyway is TWEAKED!
Crankshaft and Harmonic Balancer Repair
2F rebuild stumbling block: crank/balancer keyway
Crank Pulley Damaged - Rebuild or Diesel Swap?

 

[Mace]

One thing to note, it's not allowed to post the same questions across multiple sections of the board. Please keep your question to one section and let that one run it's course.
Thanks
Mace

 

[Cruising Canuck]

I have fixed keyways in the past by using a brush (from an electric motor)

file it to the right size of the keyway and insert it. Then run a weld along the broken part of the key. The weld won't stick to the brush.

I have never done this with any keyway that is important, like a crank. But it works beautifully for lawnmower parts