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    Hesitation at max rpm AD41D

    During a WOT test (AD41D&# During a WOT test (AD41D) with a new set of A4 props for my 280DP the vessel achieved a max rpm of 3900. On the second attempt to match the WOT max rpm the boat did not want to go higher than about 3500 rpm. It felt that there was some hesitation or the turbo wasn't...
  2. S

    AD41D Max RPM amp prop size for stern drive

    "Hello, I'm a new membe "Hello, I'm a new member with a new boat with a AD41D engine. I do not know when it was manufactured, but suspect 10+ years ago. I just got a new boat a 25' Davis Rock Harbor with the AD41D coupled to a volvo-penta duo prop stern drive DP-D1 1.78 with propeller...
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