Quote Originally Posted by Parksy View Post
I weighed the rods and pistons and found one slightly heavier than the rest. I brought the weight down slightly to get them all to about 5 grams within each other. Was going to get them all to within a gram of each other but found it a time consuming process.
Imagine what 5g translates to with the inertia that is present in a reciprocating piston engine. Balancing of the parts and rotating assembly goes a long way to making the car drive nicer. It doesnt really net you any performance as such but is just much smoother in its operation. Balancing really isnt that costly of an exercise either and its surprising how many people who rebuild engines and dont do it.