Propulsion

Discuss marine engines, drives, and propulsion systems.

  1. Props

    Propeller selection, performance comparison, prediction, experience, and modification.
    Discussions:
    425
    Messages:
    4,779
    Latest: Lighter boat, prop change? Mr Efficiency, Jun 22, 2018 at 6:30 AM
    RSS
  2. Surface Drives

    Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.
    Discussions:
    160
    Messages:
    2,553
    RSS
  3. Jet Drives

    Jet Drives (pumps, impellers, etc.)
    Discussions:
    418
    Messages:
    3,918
    RSS
  4. Outboards

    2-stroke and 4-stroke outboard motors.
    Discussions:
    919
    Messages:
    8,549
    Latest: Nissan 8hp tuned up to 9.8? powerabout, Jun 15, 2018
    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:
    526
    Messages:
    3,591
    RSS
  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:
    504
    Messages:
    4,584
    RSS
  8. Diesel Engines

    Diesel Engines
    Discussions:
    624
    Messages:
    7,891
    Latest: Diesel Heat Exchanger Conversion to Radiator gonzo, Jun 20, 2018 at 1:09 PM
    RSS
  9. Gas Engines

    Gasoline Engines
    Discussions:
    379
    Messages:
    4,208
    Latest: Sizing a new oil cooler 7228sedan, Jun 22, 2018 at 12:36 PM
    RSS
  10. Electric Propulsion

    Electric propulsion systems
    Discussions:
    29
    Messages:
    588
    Latest: Power Rudder is Unique to Duffy Boats OCB, Jun 20, 2018 at 3:47 PM
    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:
    5,423
    RSS
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  15. kschung
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  16. Leveboat
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  17. ATMHC
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  18. Angle X
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  19. valvebounce
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  20. Squidly-Diddly
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  21. mitchellleary
    Replies:
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  22. Liopleurodon
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  23. DCockey
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  24. 1J1
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  25. Random_user
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  26. brian eiland
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  27. bcobbett
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  28. Timetogo
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  29. dwicejama
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  30. bluedolfin
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  31. JasonCatt
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  32. Angle X
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  33. mtht110
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  34. captdon65
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  35. brian eiland
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  36. voodoo92
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    2,108
  37. sdowney717
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  38. Danob
    Replies:
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    3,041
  39. MoeZ
    Replies:
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    Views:
    987
  40. ahdblo7
    Replies:
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    Views:
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