For the one who knows (donzi 22 classic0

[oko440]

Hi everyone,
I am getting a old donzi classic 22 and i want to put a Mercruiser (496 magnum h o w Bravo 1) on it.
The guy who purchase the engine asked me what gear ratio I want to choose and I've got no idea!!!
I will use the boat in salt water.
Do you know what geat ratio I should use and what propeller should I put according to the gear ratio???
Thank you for your help.

Laurent

[axelkloehn]

guess it is a 1:1.5 ratio with a 23", 24"or 25" prop- depends which prop manufacturer, labbed or not, 3 or 4 blade, but for sure you will get better answers as this one- just wait till the experts reply.

[VetteLT193]

yes, 1.5 is pretty much the standard. Stock from the factory would have been 1.5 with a 25" Mirage Plus.

[BlownCrewCab]

1.5 is the best choice, from there you can go up or down in prop sizes, if you over geared (1.3) or under geared (1.6) your prop selection narrows quickly.....

[Pismo]

1.5, i concur...

[Bamboo Loui]

mine has the 1:1.5 and a 25 mirage plus

[LKSD]

It should be a 1.50.. Also depending on what altitude & power level engine you choose the usual props are 23p, 25p Mirage plus Merc blades.. ;) Jamie / Lakeside Restorations