Boat: S34 Bob Stewart - 1959 Patiki class. Re--built by me & good mate.
Yanmar 3GM30F OEM crank pulley size....
I am away from my boat (1.5hrs) and need to know crank pulley diameter to peaks of "v".
Trying to source right size alternator pulley for correct ratio.
It would be much appreciated as I can't find it on the net.