If the center section of the balancer is cast iron then the "weld" may be brazed. The bronze/brass could be ground off carefully and might show a seam, in that case I think you could separate the two. I think the balancer is a lost cause but maybe the crank can be saved.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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