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  1. #1
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    Lightbulb Best way to turn up a 3.3 ltr Evinrude

    Can do the DBR pistons V8 rods sleeves block work questions

    longivity #1 usable power 3500 cruse, do I ditch the stock Ecu and use doner ocean pro carbs an electronics with a 8500 rpm cdi or go with a motec ecu a have it programmed as a do or as one of my old school wrencher said to use a yami comp an modify the front half for injectors ad a oxygen sensor in exhaust adaptor an let it rip it will self learn any reasonable alternative besides a low torque air injected high rever no pun intended the engine dosent have a header so it dosent have lowen torque unless it’s on a potato chip hull I have seen many under prop just to get on top nice part about being a long time mech got to do at least 1k + sea trials on many different boats powered by the major merc johnrude yami suzuki
    Last edited by MrG; 08-25-2019 at 07:17 PM.

  2. #2
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    What is the donor motor and the application? Too many questions, not enough info.

  3. #3
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    Center counsel 21 ft offshorehttps://youtu.be/Hlyxok6634k
    Donor is a 2008 225 Etec one bad piston over heat scuffed plastic bag syndrome ,water pomp was fine but showing a rubber transfer in center of impeller this run in the vid was before the jack plate was doing 68 mph you can see the tac holding redline 6700

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