Johnson Model SD, the profile of the powerhead and the water outlets in the prop are a dead giveaway.
Best,
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...
Yup its an SD of some vintage. Some of those old girls had a pressure tank mounted on the motor. Direct drive and vacuum cooling. I can just make out the holes in the prop. They were made in the late 40’s. I have an SD20 1950 16hp. I had a heck of a time finding a twist grip, Fisherman6 fixed me up with one. It should make you a good project. Looks like it is all there.