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Forum: Technical Discussion

The place for mechanics, racers, governing body officials, tech-talk junkies, or anyone seeking engine-related technical help.

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  1. Exclamation Sticky Thread Sticky: New low cost ECU alternative!

    Started by Tony Brucato, 07-21-2006 08:51 AM
    5 Pages •
    1 2 3 4 5
    3 Attachment(s)
    • Replies: 74
    • Views: 206,753
    keefallan
    09-20-2020, 11:40 AM Go to last post

  1. Tohatsu 30 tuner

    Started by Brahatsu, Today 12:45 AM
    • Replies: 1
    • Views: 65
    nelson edens
    Today, 08:05 AM Go to last post

  2. Porting and stufing 175 2.5

    Started by SJD1974, 01-13-2025 05:29 PM
    12 Attachment(s)
    • Replies: 5
    • Views: 428
    LakeFever
    Yesterday, 09:59 PM Go to last post

  3. Looking for a part - Steel Elbow for carbs

    Started by rankink, Yesterday 04:29 PM
    1 Attachment(s)
    • Replies: 2
    • Views: 158
    skialot2
    Yesterday, 08:19 PM Go to last post

  4. Sea Star Steering Oil/Fluid

    Started by TLH101, Yesterday 08:52 AM
    • Replies: 2
    • Views: 147
    rjdubiel
    Yesterday, 11:11 AM Go to last post

  5. Circlip tool?

    Started by mercrazy, 01-12-2025 06:20 AM
    1 Attachment(s)
    • Replies: 3
    • Views: 343
    mercrazy
    Yesterday, 10:50 AM Go to last post

  6. Carb vs EFI ?

    Started by skialot2, 09-07-2024 11:47 PM
    3 Pages •
    1 2 3
    12 Attachment(s)
    • Replies: 41
    • Views: 3,117
    skialot2
    01-13-2025, 08:09 PM Go to last post

  7. 2014 225 Pro Xs Low Compression

    Started by Kdybalski, 01-13-2025 06:34 PM
    • Replies: 0
    • Views: 122
    Kdybalski
    01-13-2025, 06:34 PM Go to last post

  8. 3.0 ProMax cylinder heads?

    Started by hooken203, 01-12-2025 08:20 AM
    • Replies: 2
    • Views: 257
    hooken203
    01-12-2025, 09:27 PM Go to last post

  9. Mercury Tech: Machining and port grinding ,playing around machining. Please post your pics!

    Started by Zoomba, 01-30-2018 01:11 AM
    2 Pages •
    1 2
    cutting heads grinding, porting maching 18 Attachment(s)
    • Replies: 27
    • Views: 3,222
    OnPad
    01-12-2025, 04:09 PM Go to last post

  10. Trailering Recommendations

    Started by norcalLmo, 01-10-2025 08:44 AM
    1 Attachment(s)
    • Replies: 4
    • Views: 561
    4Speed
    01-12-2025, 07:41 AM Go to last post

  11. 2.5 135HP Mercury cylinder head volume

    Started by Carter Powell, 01-11-2025 12:45 PM
    • Replies: 2
    • Views: 202
    tlwjkw
    01-12-2025, 03:02 AM Go to last post

  12. 2.4 BP EFI Front on 2.5 Promax 225 block

    Started by rjdubiel, 01-10-2025 10:18 AM
    2 Attachment(s)
    • Replies: 6
    • Views: 593
    tlwjkw
    01-12-2025, 02:56 AM Go to last post

  13. Upper Motor Mounts

    Started by Glastron1987, 01-11-2025 03:57 PM
    • Replies: 2
    • Views: 207
    25two.stroke
    01-11-2025, 07:00 PM Go to last post

  14. 300x rev limiter

    Started by Wild Bill, 01-11-2025 03:49 PM
    • Replies: 1
    • Views: 160
    skialot2
    01-11-2025, 06:54 PM Go to last post

  15. 300x reeds

    Started by Wild Bill, 01-11-2025 04:00 PM
    • Replies: 0
    • Views: 101
    Wild Bill
    01-11-2025, 04:00 PM Go to last post

  16. CR Pair of 2017 Opti 150's with 700 hours

    Started by Sutphil, 01-10-2025 10:00 AM
    • Replies: 1
    • Views: 273
    25two.stroke
    01-10-2025, 02:58 PM Go to last post

  17. rev4 props

    Started by KIRCHNER, 01-09-2025 08:25 AM
    • Replies: 4
    • Views: 471
    KIRCHNER
    01-09-2025, 10:47 PM Go to last post

  18. Yamaha Tech: Yamaha jet chart?

    Started by powerabout, 12-18-2024 03:58 AM
    2 Attachment(s)
    • Replies: 10
    • Views: 1,000
    powerabout
    01-09-2025, 02:01 AM Go to last post

  19. steering wheel sizes

    Started by KIRCHNER, 01-04-2025 08:34 PM
    • Replies: 3
    • Views: 449
    KIRCHNER
    01-07-2025, 09:56 PM Go to last post

  20. Sea Star 1.7 Helm vs 2.4 Helm

    Started by TLH101, 01-07-2025 02:28 PM
    • Replies: 2
    • Views: 222
    rjdubiel
    01-07-2025, 05:05 PM Go to last post

  21. Switchbox ?

    Started by mercrazy, 01-05-2025 05:11 PM
    • Replies: 1
    • Views: 301
    donmac
    01-07-2025, 07:34 AM Go to last post

  22. Nitrous on 2.5 Drag

    Started by CI STV, 12-09-2024 08:27 AM
    6 Pages •
    1 2 3 4 5 6
    30 Attachment(s)
    • Replies: 79
    • Views: 5,916
    CI STV
    01-06-2025, 11:39 PM Go to last post

  23. Ultrasonic cleaners. How good do they work?

    Started by skialot2, 12-31-2024 07:09 PM
    5 Attachment(s)
    • Replies: 3
    • Views: 559
    AlliStan
    01-06-2025, 09:02 PM Go to last post

  24. Chinese switch boxes?

    Started by mercrazy, 01-05-2025 05:14 PM
    • Replies: 2
    • Views: 350
    KIRCHNER
    01-06-2025, 07:38 PM Go to last post

  25. MERC 300XS FILTER CROSS REFERENCE (the small inline oil and fuel filters)

    Started by scott reierson, 01-05-2025 03:30 PM
    • Replies: 2
    • Views: 228
    scott reierson
    01-06-2025, 12:19 PM Go to last post

  26. Hot Foot Question

    Started by TLH101, 01-03-2025 07:46 PM
    3 Attachment(s)
    • Replies: 7
    • Views: 346
    TLH101
    01-05-2025, 08:16 AM Go to last post

  27. Gen 1 verado driveshaft material?

    Started by vbtravisd, 12-19-2024 09:48 PM
    • Replies: 1
    • Views: 318
    wolfgangb
    01-05-2025, 06:20 AM Go to last post

  28. Crank mains lubrication holes

    Started by NZ Sidewinder, 01-03-2025 03:14 PM
    5 Attachment(s)
    • Replies: 2
    • Views: 357
    NZ Sidewinder
    01-04-2025, 11:21 PM Go to last post

  29. 94 Mercury 2.5 efi

    Started by skatermike24, 01-02-2025 09:50 AM
    1 Attachment(s)
    • Replies: 3
    • Views: 324
    H2Okie
    01-04-2025, 09:51 PM Go to last post

  30. Lower unit gett stuck in gear

    Started by Aaronhl, 01-03-2025 09:32 PM
    • Replies: 3
    • Views: 278
    Aaronhl
    01-04-2025, 12:59 PM Go to last post

  31. trim tab location

    Started by KIRCHNER, 01-03-2025 07:08 PM
    2 Attachment(s)
    • Replies: 3
    • Views: 254
    JPEROG
    01-03-2025, 09:44 PM Go to last post

  32. Repeated stator failure - 260

    Started by 25two.stroke, 01-02-2025 12:14 AM
    • Replies: 5
    • Views: 419
    LakeFever
    01-02-2025, 08:33 PM Go to last post

  33. VST delete on a 300 xs OPTI

    Started by Tcatrett, 01-02-2025 11:13 AM
    • Replies: 2
    • Views: 184
    25two.stroke
    01-02-2025, 12:58 PM Go to last post

  34. School me on 2001 Mercury 200 DFI

    Started by norcalLmo, 12-30-2024 12:14 PM
    • Replies: 6
    • Views: 380
    Duro78
    01-01-2025, 09:57 PM Go to last post

  35. Hey SKIALOT I did some Black Friday shopping

    Started by Aaronhl, 11-30-2024 02:50 PM
    2 Pages •
    1 2
    17 Attachment(s)
    • Replies: 25
    • Views: 2,473
    Glastron1987
    01-01-2025, 07:15 PM Go to last post

  36. Void Filler

    Started by tabme, 12-29-2024 03:32 PM
    • Replies: 6
    • Views: 337
    LakeFever
    12-30-2024, 11:47 AM Go to last post

  37. Wiring ‘Kill Switch’ on a Merc I6….

    Started by SCT, 12-14-2024 05:53 PM
    1 Attachment(s)
    • Replies: 3
    • Views: 356
    scott reierson
    12-28-2024, 07:01 PM Go to last post

  38. Recommendations for where to go for boring/machine work? omc v4 crossflow(s)

    Started by leaky, 12-27-2024 01:40 PM
    1 Attachment(s)
    • Replies: 1
    • Views: 294
    James45157
    12-27-2024, 07:01 PM Go to last post

  39. 2005 2.5xs offshore

    Started by tabme, 12-26-2024 04:31 PM
    • Replies: 4
    • Views: 309
    tabme
    12-27-2024, 08:27 AM Go to last post

  40. top and bottom guide

    Started by ivlakeman, 12-10-2024 05:13 AM
    • Replies: 5
    • Views: 482
    NZ Sidewinder
    12-26-2024, 02:31 AM Go to last post
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