Balancing connecting rods

Posted by Odd Moen On 2019/7/3 16:00:23

Do anyone have any information about the maximimum difference in weight between the pistons and connecting rods from the Packard factory in the 1930, or which max weight difference between the connecting rods should be achieved by rebiulding a Packard engine today? On the today modern engine I have been told that the max weight difference between the connecting rods should be 1 to 2grams. But the Packard engine is a low speed and a long stroke engine. Should also balancing the connecting rods by weighing the big and small ends be performed on a engine overhaul today?