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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
    • Replies: 74
    • Views: 184,926
    09-20-2020, 11:40 AM Go to last post
  1. Yamaha Tech: Yamaha 2.6L Frankenstein build

    Started by 225XCL, 05-25-2014 07:01 PM
    7 Pages
    1 2 3 4 5 6 7
    • Replies: 97
    • Views: 11,467
    03-09-2024, 08:20 PM Go to last post
  2. 300 promaxs 98-2000 ECU/IGN

    Started by 265mercman, 12-22-2023 02:42 AM
    • Replies: 1
    • Views: 294
    12-23-2023, 11:50 AM Go to last post
  3. Mercury Tech: Mercury 2.5 260 Engine builders Opinion / Advice needed.

    Started by 4-MULA-V, 02-11-2024 01:11 PM
    • Replies: 9
    • Views: 645
    02-13-2024, 01:32 PM Go to last post
  4. Mercury Tech: Optimax Maintenance at 100 hours

    Started by 4Speed, 11-18-2023 04:07 PM
    • Replies: 6
    • Views: 424
    02-18-2024, 12:57 PM Go to last post
  5. Mercury 450r wiring diagrams for rigging?

    Started by 724Bravo, 01-20-2024 04:10 PM
    • Replies: 0
    • Views: 251
    01-20-2024, 04:10 PM Go to last post
  6. OMC Tech: 1999 V4 Looper Phantom SLOW mode activation

    Started by 72lightning, 01-05-2024 01:00 AM
    • Replies: 4
    • Views: 635
    01-27-2024, 01:34 AM Go to last post
  7. 1991 Mercury 200XRI voltage and idle issue

    Started by 88MCPS200, 08-13-2023 09:29 PM
    • Replies: 7
    • Views: 589
    02-28-2024, 12:13 PM Go to last post
  8. 2.5L Jet Sizes

    Started by 99fxst99, 03-12-2024 05:56 PM
    • Replies: 3
    • Views: 216
    03-13-2024, 01:23 PM Go to last post
  9. Lower Unit Filler

    Started by 99fxst99, 03-20-2024 11:22 PM
    • Replies: 8
    • Views: 240
    03-22-2024, 01:46 PM Go to last post
  10. How to remove the steering swivel arm from Mercury engine bracket?

    Started by Aaronhl, 03-21-2020 09:12 PM
    4 Pages
    1 2 3 4
    • Replies: 52
    • Views: 5,370
    01-07-2024, 12:05 AM Go to last post
  11. 3 ram trim pump assembly faulty

    Started by Aaronhl, 01-13-2024 01:07 PM
    • Replies: 3
    • Views: 624
    01-17-2024, 08:27 PM Go to last post
  12. 3.0 liter lower unit carrier pull

    Started by Aaronhl, 01-21-2024 06:05 PM
    • Replies: 10
    • Views: 814
    01-24-2024, 02:48 PM Go to last post
    • Replies: 9
    • Views: 365
    03-25-2024, 10:43 PM Go to last post
  13. 2.5 sportmaster question

    Started by Alby28race, 12-30-2023 11:29 AM
    • Replies: 9
    • Views: 1,428
    01-10-2024, 10:01 PM Go to last post
  14. Mercury 3.0L EFI Slide Intake Wanted !!

    Started by Amatuer, 02-11-2024 01:19 AM
    • Replies: 2
    • Views: 164
    02-11-2024, 06:35 AM Go to last post
  15. Oil Drain and Vent Plug Gaskets

    Started by Basnova, 01-18-2024 09:47 AM
    • Replies: 9
    • Views: 1,375
    01-19-2024, 11:39 AM Go to last post
    • Replies: 5
    • Views: 291
    03-22-2024, 01:59 PM Go to last post
  16. 02 Mercury 225 Optimax fuel/air Issue!

    Started by Boatrescue, Yesterday 12:13 PM
    • Replies: 0
    • Views: 25
    Yesterday, 12:13 PM Go to last post
  17. High water pressure 225 promax

    Started by Bunger, 05-24-2020 10:32 AM
    6 Pages
    1 2 3 4 5 6
    • Replies: 87
    • Views: 3,878
    03-07-2024, 07:25 AM Go to last post
  18. etec 300s

    Started by Captain UK, 01-12-2024 08:58 PM
    • Replies: 14
    • Views: 708
    01-16-2024, 02:08 PM Go to last post
  19. Ratcheting Case Question.

    Started by Carter Powell, 01-21-2024 02:17 PM
    • Replies: 10
    • Views: 1,463
    01-25-2024, 02:30 PM Go to last post
  20. Water pressure in a sportmaster at 60MPH

    Started by Carter Powell, 02-03-2024 08:54 PM
    • Replies: 11
    • Views: 734
    02-14-2024, 10:56 AM Go to last post
  21. CMC Jackplate motor rebuilt to run faster.

    Started by Carter Powell, 02-26-2024 12:57 PM
    • Replies: 1
    • Views: 174
    02-28-2024, 07:55 PM Go to last post
  22. Trophy Propelles

    Started by Carter Powell, 03-18-2024 12:49 PM
    • Replies: 3
    • Views: 235
    03-24-2024, 05:55 PM Go to last post
  23. Mercruiser Trim Pump issue?

    Started by Carter Powell, 03-19-2024 04:40 PM
    • Replies: 8
    • Views: 212
    03-20-2024, 06:27 PM Go to last post
  24. Control box up tilt goes down instead of up?

    Started by Carter Powell, 03-21-2024 12:03 PM
    • Replies: 3
    • Views: 106
    03-25-2024, 05:49 PM Go to last post
  25. Help! early serial number identify

    Started by Cheifjunk, 12-20-2023 03:10 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 928
    12-22-2023, 02:02 PM Go to last post
  26. Mercury Tech: 1978 2.4 powerhead swap. What fits?

    Started by Cheifjunk, 02-09-2024 06:59 PM
    • Replies: 5
    • Views: 251
    02-10-2024, 12:10 PM Go to last post
  27. mercury 3.0 exhaust relief.

    Started by chevy355mark, 02-27-2020 07:43 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 4,611
    01-23-2024, 10:15 AM Go to last post
  28. Crankcase Stuffers ,Mercury,and now OMC

    Started by ChrisCarsonMarine, 02-07-2019 02:26 PM
    4 Pages
    1 2 3 4
    • Replies: 49
    • Views: 7,312
    01-08-2024, 03:08 AM Go to last post
  29. Pro Max 2.5 two stroke oil

    Started by creeljd, 02-26-2024 05:18 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 844
    03-02-2024, 11:25 AM Go to last post
  30. Mercury Tech: Difference in stators

    Started by ctered, 07-12-2008 08:12 PM
    • Replies: 10
    • Views: 2,139
    01-26-2024, 06:04 AM Go to last post
    • Replies: 18
    • Views: 394
    Today, 07:29 AM Go to last post
  31. Mercury Tech: Mercury 225 Optimax Surging

    Started by DieselDood, 02-03-2024 11:36 PM
    • Replies: 13
    • Views: 580
    02-09-2024, 05:54 PM Go to last post
  32. Mercury Tech: 225 Optimax Service Manual PDF?

    Started by DieselDood, 03-12-2024 10:40 AM
    • Replies: 10
    • Views: 167
    03-18-2024, 02:09 PM Go to last post
  33. Homemade tubular midsection ? x cat engine replica?

    Started by espen, 03-12-2024 08:24 PM
    • Replies: 0
    • Views: 135
    03-12-2024, 08:24 PM Go to last post
  34. Mercury Tech: Hole size for one piece

    Started by FAST RALLY SPORT, 01-31-2024 12:40 PM
    • Replies: 4
    • Views: 384
    02-01-2024, 02:05 AM Go to last post
  35. Tohatsu 40hp 3-cyl 2-stroke mod questions

    Started by FastCat04, 01-08-2024 10:27 AM
    • Replies: 1
    • Views: 383
    01-09-2024, 04:11 PM Go to last post
  36. Solid Motor mount compatibility

    Started by Fishwhisper, 01-25-2024 02:36 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 1,676
    01-31-2024, 10:31 AM Go to last post
  37. Mercury Tech: 2000 Mercury 125hp (ELPTO) Oil delete

    Started by gerrydi69, Today 08:40 AM
    • Replies: 0
    • Views: 10
    Today, 08:40 AM Go to last post

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