Propulsion

Discuss marine engines, drives, and propulsion systems.

  1. Props

    Propeller selection, performance comparison, prediction, experience, and modification.
    Discussions:
    426
    Messages:
    4,805
    Latest: Lighter boat, prop change? valvebounce, Aug 10, 2018 at 3:50 PM
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  2. Surface Drives

    Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.
    Discussions:
    161
    Messages:
    2,567
    Latest: Mathematically-designed prop gonzo, Aug 8, 2018 at 5:47 PM
    RSS
  3. Jet Drives

    Jet Drives (pumps, impellers, etc.)
    Discussions:
    420
    Messages:
    3,930
    Latest: Jet drive power requirement BMcF, Jul 16, 2018
    RSS
  4. Outboards

    2-stroke and 4-stroke outboard motors.
    Discussions:
    926
    Messages:
    8,599
    Latest: Yamaha 5BS L661 Owners/Repair Manual Mr Efficiency, Aug 14, 2018 at 6:53 PM
    RSS
  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:
    529
    Messages:
    3,605
    Latest: Omc 120 3000 Rpm At Full Load? Wassman, Aug 12, 2018 at 12:49 PM
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  6. Pod Drives

    Volvo IPS, ZF, CMD Zeus, and other pod-drive systems
    Discussions:
    25
    Messages:
    260
    RSS
  7. Inboards

    Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers
    Discussions:
    505
    Messages:
    4,588
    RSS
  8. Diesel Engines

    Diesel Engines
    Discussions:
    628
    Messages:
    7,903
    RSS
  9. Gas Engines

    Gasoline Engines
    Discussions:
    383
    Messages:
    4,230
    RSS
  10. Electric Propulsion

    Electric propulsion systems
    Discussions:
    32
    Messages:
    618
    RSS
  11. Hybrid

    Hybrid propulsion such as diesel electric, hydraulic.
    Discussions:
    207
    Messages:
    5,232
    RSS
  12. DIY Marinizing

    A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.
    Discussions:
    267
    Messages:
    5,426
    Latest: Aircooled manifold, water cooled exhaust? gonzo, Aug 9, 2018 at 12:54 PM
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  21. Angle X
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  39. voodoo92
    Replies:
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  40. sdowney717
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