Building a Better Buick, Part I
Since it would be impossible to balance the crank with the rods and pistons attached, bob weights are installed on the crank that match the weight of two pistons, two rods, two wristpins, two rings, and two bearings per journal. With the bob weights, the harmonic balancer, and the flexplate attached, the crank is spun on a computer balancer to find where the unit is out of balance. Weight will be removed where necessary to get the crank into perfect balance.
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