[94econobox]

Totally noticable in acceleration and decelration, also less stress on internal reciprocating components.

I thought the counterweights were designed with the weight of the stock rods and pistons in mind. Does lightening one and not the other unbalance things and induce vibration?

 

[94econobox]

So with a lightened and balanced crank and lightweight/balanced pistons and rods should allow for reliable revving to 6300 rpm time after time, eh? Is there a limit to this, i.e. if this were combined with a lightweight flywheel, would the reciprocating mass be so low, it'd be hard to drive around town (engine slowing quickly between shifts)?