[quote]ORIGINAL: Hajduk

Let me get this straight. This engine is only ONE ounce heavier then OS 1.60 FX? Is that possible?

Its not impossible, just very difficult to accomplish and retain a good counterbalance. Its going to shake allot unless BME has removed excess of material from the piston and used an aluminum rod. The crank will also have to be very petite with a piece of tungsten for counter balance.