I froze the motor to my '72 Datsun 240Z, and now I know why...I spun the crankshaft bearing on my #1 piston. the bearing pretty much "liquified" the bearing, and it froze the motor overall. I want to get a new crankshaft, but I can't find one anywhere. if any one has a brand new crankshaft, or knows where to get one, please let me know!

 

You will have a hard time finding a "brand new" 240 crank. You should be able to find one that is in excellent condition and may not even need to be turned. Even if it does, it will be fine. Just get oversized bearings and you are set.