OK, makes sense, only single blades at 12 ...
Thanks Rick for your continuing connection to my problem,
I did ask for advice from "Marine Direct Australia" and their tech advisor
I see you live at the cape, I live about 1 hour or so from there. I will gladly do this for you if you want to make the ride.
various enfields for sale, recon one about £1200 + postage, i also have a new one which has never been connected to a engine, £2000,+ postage, tel no
Sounds like a mecruiser outdrive....did you check the thermostat housing, where the water exits to go to the manifolds?