422 or 425 ?

[MossRoad]

<font color="blue"> For the price diff., I rationalized that I could buy the "whole"
engine if the Robin was a "bust". </font>

Yep! I remember that converstation, too. /forums/images/graemlins/smile.gif

And I remember several conversations regarding the measurment of torque and HP when comparing the Robin to the Kohler and the different methods they used to measure them.

Can anyone shed some light on these methods and post some comparrisons for the rest of us? It would be very useful to anyone considering a purchase.

 

[MossRoad]

Bumping a 15 year old thread for someone that's interested in a used PT418.

 

[pka45]

Very good information, thanks.