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  1. 09-19-2021, 12:27 PM #1
    KJW83
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    Merc 40 4S props

    Currently running a 13p aluminum prop and was curious if anyone is running a 14p? Any change in performance?

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    Last edited by EuropeanAM; 09-26-2021 at 04:51 PM.
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  2. EuropeanAM
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    #2 09-22-2021, 04:17 PM
    If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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    #3 09-26-2021, 03:02 PM
    Quote Originally Posted by EuropeanAM View Post
    If you would, please take a moment to review the Announcements at the top of the Forum, and be sure to provide the Required Info (serial number) when posting. Thanks!
    1c465916……10.5 x 13p stock aluminum prop currently producing 30-31mph @ 5700……my goal is to hit 35mph if possible…..what would be the best prop for this, 14p aluminum or 14p SS?
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    #4 09-26-2021, 04:57 PM
    You're probably going to want to keep those RPM's up in the 5700-5950 range for best results.

    Something in the 13P (MAYBE 14P) Stainless prop range might work. There are also some 4-blade choices that may help, depending on what boat this engine is mounted on.

    Thanks for providing the prop info, as there really is no "stock" prop (engine comes from the factory with NO propeller).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
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  5. KJW83
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    #5 09-26-2021, 05:55 PM
    Quote Originally Posted by EuropeanAM View Post
    You're probably going to want to keep those RPM's up in the 5700-5950 range for best results.

    Something in the 13P (MAYBE 14P) Stainless prop range might work. There are also some 4-blade choices that may help, depending on what boat this engine is mounted on.

    Thanks for providing the prop info, as there really is no "stock" prop (engine comes from the factory with NO propeller).

    thank you for the information…..the boat is a 2003 aluminum Triton 1754
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