All figures are measured with my non digital gauges, and both conrods and all bearings are well used examples.
Yamaha 3XV
Crank Pin Diameter - ?
Big End Diameter - 31mm
Big End Width - 15.98mm
Little End Diameter - 21mm
Little End Width - 15.98mm
Gudgeon Pin Diameter - 16.98
Internal Length - 136mm
Centre to Centre - 110.0mm (Internal Length - (little End/2+big End/2)) 136mm-26mm = 110mm
Total Rod Length - 144.10 (ish)
Honda KM9
Crank Pin Diameter - 24mm
Big End Diameter - 31mm
Big End Width - 16.92mm
Little End Diameter - 20mm
Little End Width - 16.96mm
Gudgeon Pin Diameter - Don't have one free.
Internal Length - 134.42
Centre to Centre - 108.92mm (Internal Length - (little End/2+big End/2)) 134.42mm-25.5mm = 108.92mm
Total Rod Length - 143.20 (ish)
