Re: ’68 Johnson 100 hp prop pitch/diameter?

[retiredoz]

Michigan lists PR111 12 1/2 X 17 and PR113 12 1/2 X 18, three-blade alum, also a couple brass racing props AJC223 13 1/8 X 18 and AJC225 13 1/8 X19 two-blade brass..

But like the man says, hard to tell what’s what without a tach.