Value of Engine Balancing

[Hugh Barnes]

I have always gone for as much as I can. I mean, any imbalance in weight will show itself somewhere - in differing degrees I grant you, but my machine shop will always ask for pistons and rods when asked to balance. They have some witty little 'double' scales they do the rods on that weigh 'each end' of the rod. I've just done a Riley 9 engine in this way and it is as smooth as silk.

I can't give you anything more 'academic' than that, I'm afraid. You might also think about the possibility of adding some clutch components into the mix as well....

hth...