OM 606 crankshaft grinding
OM 606 crankshaft grinding
Full of fail. You don't rebalance an inline 6 crankshaft for the weight of the pistons. It's simply not possible.
But as for journal grinding, yes you can grind journals on a crank that has not had a bearing spun on it. Crankshafts that have had a bearing overheat lose their heat treat.