1. Props

   Propeller selection, performance comparison, prediction, experience, and modification.

   Discussions:

   541

   Messages:

   6,421

   

   Latest: Power predition formula Dave G 9N, Oct 16, 2024

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2. Surface Drives

   Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.

   Discussions:

   186

   Messages:

   2,863

   

   Latest: Inboard surface drive small boat. Master spearfisher, Sep 8, 2024

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3. Jet Drives

   Jet Drives (pumps, impellers, etc.)

   Discussions:

   461

   Messages:

   4,436

   

   Latest: Vospower water jets Ovrthhills, Aug 20, 2024

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4. Outboards

   2-stroke and 4-stroke outboard motors.

   Discussions:

   1,039

   Messages:

   9,982

   

   Latest: Interesting starter failure BlueBell, Nov 21, 2024

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5. Sterndrives

   Stern drive lower and upper units, transom and gimbal assemblies, steering, and trim pumps. Mercruiser (Alpha One, Alpha One Generation II, Alpha SS, Bravo One, Bravo Two, Bravo Three, Bravo XR Sportmaster, TRS, Speed Master), IMCO, ILMOR, Konrad, OMC, Volvo Penta

   Discussions:

   549

   Messages:

   3,839

   1. Gas Engines (link)

   2. Diesel Engines (link)

   

   Latest: Stern Powr Parts Laurence Bellamy, Aug 3, 2024

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6. Pod Drives

   Volvo IPS, ZF, CMD Zeus, and other pod-drive systems

   Discussions:

   29

   Messages:

   299

   1. Gas Engines (link)

   2. Diesel Engines (link)

   

   Latest: 50-200 hp electric pod with nozzle and motor on hub? ram68ocean, Jul 5, 2021

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7. Inboards

   Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers

   Discussions:

   538

   Messages:

   4,991

   1. Gas Engines (link)

   2. Diesel Engines (link)

   

   Latest: Magnetic couplings portacruise, Oct 25, 2024

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8. Diesel Engines

   Diesel Engines

   Discussions:

   689

   Messages:

   8,586

   

   Latest: Help with the selection of 6.5 v8 hammerhead spare parts gonzo, Dec 3, 2024 at 1:04 PM

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9. Gas Engines

   Gasoline Engines

   Discussions:

   423

   Messages:

   4,652

   

   Latest: Anyone need a torque monster 383 SBC? gonzo, Sep 24, 2024

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10. Electric Propulsion

    Electric propulsion systems

    Discussions:

    103

    Messages:

    2,029

    

    Latest: Electric inboard motor, my journey to find proper motor yabert, Dec 8, 2024 at 8:28 AM

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11. Hybrid

    Hybrid propulsion such as diesel electric, hydraulic.

    Discussions:

    211

    Messages:

    5,257

    

    Latest: Trolling Motor(s) for Primary Propulsion of 15' AL 'skiff' cahudson42, May 31, 2024

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12. DIY Marinizing

    A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.

    Discussions:

    276

    Messages:

    5,577

    

    Latest: VW/AUDI 3.0TDI marinising Skravo, Aug 18, 2024

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