Beater, that is a very complex question. Mechanical balance as you suggest is only the beginning. Vibration modes torsional and otherwise, manufacturing considerations, mechanical stresses, bearing loads, and more I am sure.

I justified it in my mind that my pistons are much lighter than stock so I can lighten my counterweights and let it go at that. I also use a fluid damper with the thinking that it is not tuned like an elastomer damper so should be effective for my altered rotating assembly.

I attempted no calculations, just clearance to fit and see what happens...

Last edited by strokersix; 11/20/15 12:45 PM.