Carbs from 70hp
Block bp without comp relief holes
Ex 1.382 45* chamfer
98e5
56kn with 2person=64.4mph
27 i dont know but 25to26pitch yes. If going higher with propshaft then 27 is doable, atleast with 1 person load.

That 2blade prop is somewhere 25-26 in pitch but slips more, still same speeds with 1 or 2. 3blade is more drivable. 2blade need more pitch.


#1 145 #2 150 #3 150, retorque multiple time pays off! Have to get that 1mm headgasket, sierra 1.5mm in place now.
All this 21* ign timing.