So I bought a cb7 that has the crank pulley bolt snapped off in the crank. I was wondering if I could weld the pulley on the crank just as a temporary fix so I can still drive it till I am able to buy either a new crank or new motor. Any answers will be helpful

 

If you can weld, why not just weld to the busted bolt shank? With the head sheared off the shank should not longer be under tension and should be fairly easy to remove. Remove the crank pulley and you will have more access to the busted bolt. Might even be able to cold chisel it out.

 

Well here's the issue. The guy I bought the car from had already tried to extract the bolt. He broke off a few bolt extractors in the crank bolt...

 

A little MAP gas may help break it free.