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232 Captiva Cuddy Prop Question

chasfergchasferg Member Posts: 5 ✭
in Rinker Sport Boat Forum

Hi All,  I have a 96 Captiva 232 Cuddy with a 5.7L Alpha 1 drive.  The prop on the boat is a 14.25"  20p  SS.  The boat's top speed is 45mph and the wot rpm's are 5500.  I noticed that my engine spec states 42 -4600 wot rpm's.  Using Mercury's prop calculator, they suggest a 14"  23p prop.  Could that be right?  Seems like an awfully big increase.  I'm afraid the boat won't be able to plane off.  Any suggestions or thoughts would be appreciated.

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    chasfergchasferg Member Posts: 5 ✭

    Thanks KYSEAN, I have wondered about the tach but not sure how to verify it.  Seems right based on idle speed and acceleration.

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    chasfergchasferg Member Posts: 5 ✭

    Anybody else care to offer what size prop they are running with the same configuration?

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    chasfergchasferg Member Posts: 5 ✭

    Thanks all, I did get my hands on an optical tach today and verified my boat tach.  It was dead on at idle, 2000 and 3000 rpms.  I checked it out of the water without the prop engaged but that shouldn't make any difference.  Now I wondering if my prop may be slipping some on the hub.  Maybe its time to just buy a new prop.  Mine is a 3 blade ss but is roughly 18 years old.  At least I won't waste money on a 23p.  Thanks Again!

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    sflippensflippen Member Posts: 5 ✭✭

    Just an FYI, You can also chage the outdrive gear ratio in addition to changing props

    FLIP'N OUT

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