There is one way to lighten the mass of the reciprocating assembly without sacrificing reliability. It doesn't lighten the mass by very much, though. Removing the casting flash from the rod beams works really well, but you have to have the rods shot peened to restore the surface tension. I...
I understand that as pistons reach top dead center, their inertia is trying to pull them through the top of the combustion chamber. At that point, the rods and rod bolts are the only things keeping this from happening. At some point, there is a speed at which the inertia of the piston is...