Quote:




Speaking of density, 318 and 360 used the exact same rods after about 72 and.... a 318 piston is heavier than a 360 piston.

The 318 has a shorter stroke so the weight has less affect on the imbalance and requires less balance weight and therefor can be internally balanced with a cast crank even though the bob weight is heavier.




I don't think so, Tim.

How stroke affects balance is more the distance the weight of the crank pin is away from center than what you are saying.


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