Prop specs for older boats ?

[bgt3000]

Is there a database anywhere of OEM props for Mercs/A1 from the 80's?
I bought my '81 Four Winns 18' bowrider used, and it has a damaged prop as well as a spare with a slightly different pitch.
I have the books with it but they doesn't have the prop specs so I don't know which prop is the right one.
I'm hoping that I don't have to determine by trial-and-error...although I've read that might be the final test...which runs closest to spec'd WOT.
BTW, it's a 120 Merc w/ A1 outdrive.
Thanks

 

[Bondo]

Re: Prop specs for older boats ?

I'm hoping that I don't have to determine by trial-and-error...although I've read that might be the final test...which runs closest to spec'd WOT.

Ayuh,......... That's How it's Done........

What's the #s on the props you Have,..??....

Have you Run the Boat to get a Baseline,..??....