The prop bolts from my C-85-12F did not come back with the rebult engine with the O-200 crank. The old ones had the head behind the prop flange and the bolt sticking out the front. The new crank flange has nut plates, so the bolts would thread through the front with the heads on the face of the prop hub. The Parts manual calls for -31 bolts. My engine builder has -33's he will send me to replace my missing bolts, but I just want to make sure we use the correct hardware. The prop is a metal McCauley 7148. Does anyone know for sure what the correct length is for this configuration?
Thanks, Dave
