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Steves list is fairly daunting, but he is right.
I did 1,2,3,4[rods and pistons only], and 8 on my recent rebuild.
Had no intention of doing any of this, but the machine shop guys really gave me the low-down on how a little time spent on this really makes a difference in performance and service life.
They got me on this jag in a major way when they offered to lend me their cylinder volumetric tester.... this cool little trick measures combustion chamber volume [with silly precision] based on the resonant frequency of the chamber. Think blowing across the top of a coke bottle and you'll get the idea. Managed to get all cylinders within 0.05 on compression ratio.
With just 300 miles on the rebuild, plus the fact that the engine runs and responds far better due to the rebuild, its way too early to tell if the balancing made a difference, but it was a great learning excercise. Have not taken it past 5,000 or 30% throttle yet, but will be doing that soon - after the 500m valve adjust.
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