I've heard that it's much harder on the connecting rods and bearings than when under load, but to me this doesn't make much sense. I'm thinking they experience more load when the crankshaft is under load during the power stroke, but during the intake, exhaust, and compression strokes, the forces on them are only a function of what speed the crankshaft is rotating at. Higher rotational speed means much higher acceleration of the piston and rod as it goes between TDC and BDC.
Am I missing something? Or is it just bunk?
Am I missing something? Or is it just bunk?