Author Topic: Prop for 1973 19.6" (Read 786 times)

Irish Rover · « **on:** December 04, 2007, 07:37:50 AM »

Does anyone know how to find out the size of the prop that should be on a alpha one sterndrive.

The engine is a mercruiser 140 with a alpha sterndrive and the prop was lost about 15 years ago.

I can't determine the size and the pitch for the prop that should be on the boat.

any help would be great,

Justin Hogan

GoneFission · « **Reply #1 on:** December 04, 2007, 08:23:10 PM »

Alpha One uses the same prop as Mercury outboard V-6 versions from 135-225 HP. Most are about 14" diameter and pitch varies. I would guess that a 3-blade stainless 14 x 15 would be a good start for your boat - maybe a 14 x 17.

Hope this helps!

Irish Rover · « **Reply #2 on:** December 05, 2007, 04:59:01 PM »

Tom, thank you for the info.

Happy Holidays

Butchie · « **Reply #3 on:** December 09, 2007, 02:13:29 PM »

I have the 72 19/6 3.0L I/O thats for sale. The prop on it is a Michigan wheel 03025 14x19. There was a spare under the console when I got it that looked 30 years old same pitch.
John