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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: 184,929
    09-20-2020, 11:40 AM Go to last post
  1. '98 Mariner 200 EFI; 5 or 4 reeds?

    Started by Ridevee, 12-30-2023 04:46 PM
    • Replies: 7
    • Views: 732
    01-03-2024, 08:54 AM Go to last post
  2. 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
  3. 1.75 Gear Set Instruction Sheet

    Started by Onetime, 03-26-2024 06:52 PM
    • Replies: 0
    • Views: 45
    03-26-2024, 06:52 PM Go to last post
  4. 1.87 fishing gears - 43-44104A8 VS 43-44104A2?

    Started by rjdubiel, 01-11-2024 08:44 AM
    • Replies: 4
    • Views: 319
    01-11-2024, 12:18 PM Go to last post
  5. 100 mercury project build

    Started by NRAINES38, 12-25-2023 10:06 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,974
    01-26-2024, 07:14 PM Go to last post
  6. 1973 Johno 115 piston scoring - is it terminal?

    Started by Gilera, 12-28-2023 02:56 AM
    2 Pages
    1 2
    • Replies: 28
    • Views: 2,445
    01-05-2024, 02:47 PM Go to last post
  7. Mercury Tech: 1978 2.4 powerhead swap. What fits?

    Started by Cheifjunk, 02-09-2024 06:59 PM
    • Replies: 5
    • Views: 252
    02-10-2024, 12:10 PM Go to last post
  8. 1987 evinrude 90hp overheating on starboard pots

    Started by spybot, 03-11-2024 04:12 PM
    • Replies: 3
    • Views: 116
    03-12-2024, 04:15 AM Go to last post
  9. 1989 Mariner 175Ski

    Started by Glastron1987, 07-27-2023 08:23 PM
    10 Pages
    1 2 3 4 5 6 7 8 9 10
    • Replies: 148
    • Views: 12,921
    02-12-2024, 11:00 PM Go to last post
  10. 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
  11. 1996 135 hp mercury increase hp

    Started by Quadzilla, 12-20-2023 03:48 PM
    • Replies: 8
    • Views: 938
    12-21-2023, 05:04 PM Go to last post
  12. 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
  13. 2.0 150 parts hodgepodge

    Started by NRAINES38, 12-23-2023 08:39 AM
    • Replies: 8
    • Views: 1,828
    12-24-2023, 10:05 PM Go to last post
  14. Mercury Tech: 2.4 Bridgeport Fuel rail fitting style and size?

    Started by trickcraft, 03-14-2024 10:06 PM
    • Replies: 1
    • Views: 98
    03-25-2024, 09:36 PM Go to last post
  15. 2.4 chrome bore decking?

    Started by Tforman, 02-01-2024 10:36 PM
    2 Pages
    1 2
    • Replies: 23
    • Views: 1,207
    02-10-2024, 06:19 PM Go to last post
  16. 2.4 sleeve cracked?

    Started by Tforman, 02-08-2024 11:15 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 849
    02-15-2024, 05:42 AM Go to last post
  17. 2.5 280 Break in??

    Started by stoneman, 03-21-2024 04:15 PM
    • Replies: 2
    • Views: 187
    03-24-2024, 08:18 AM Go to last post
  18. Mercury Tech: 2.5 Merc engine damage

    Started by moldman, 03-02-2024 12:01 PM
    • Replies: 7
    • Views: 506
    03-05-2024, 12:54 PM Go to last post
  19. 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
  20. 2.5L 260 PP with Alternator boss, Block question.

    Started by stoneman, 12-25-2023 09:24 AM
    • Replies: 7
    • Views: 920
    12-30-2023, 11:48 AM Go to last post
  21. 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
  22. Mercury Tech: 20" 3.0L MID Offshore Exhaust ????

    Started by Liberator*21, 10-21-2010 07:20 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,725
    01-04-2024, 02:59 AM Go to last post
  23. 2000 200HP Merc. 2.5

    Started by skialot2, 11-09-2023 02:42 PM
    3 Pages
    1 2 3
    • Replies: 38
    • Views: 4,519
    02-08-2024, 04:16 PM Go to last post
  24. Mercury Tech: 2000 Mercury 125hp (ELPTO) Oil delete

    Started by gerrydi69, Today 08:40 AM
    • Replies: 0
    • Views: 31
    Today, 08:40 AM Go to last post
  25. Question Mercury Tech: 2001 Mercury 4 Stroke 90 hp rev limit issue 2000 RPM max

    Started by LaveyT, 03-10-2024 02:04 PM
    • Replies: 2
    • Views: 110
    03-26-2024, 09:34 AM Go to last post
  26. 200FF or 225 Promax to mod?

    Started by LakeFever, 01-19-2024 09:47 AM
    • Replies: 11
    • Views: 1,358
    01-22-2024, 07:10 PM Go to last post
  27. Question 2016 Mercury Optimax 150 Pro XS

    Started by Skinny-water-mafia, 12-10-2023 08:05 PM
    help with engine, optimax 150, pro xs
    • Replies: 9
    • Views: 506
    12-22-2023, 01:34 PM Go to last post
  28. 2017 150HO Etec

    Started by Snipe, 01-18-2024 04:31 PM
    • Replies: 11
    • Views: 1,930
    01-21-2024, 10:17 PM Go to last post
  29. Mercury Tech: 225 Optimax Service Manual PDF?

    Started by DieselDood, 03-12-2024 10:40 AM
    • Replies: 10
    • Views: 168
    03-18-2024, 02:09 PM Go to last post
  30. 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
  31. 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
  32. 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
  33. 300x block question?

    Started by malexie, 01-17-2024 09:57 PM
    • Replies: 5
    • Views: 865
    02-14-2024, 11:51 PM Go to last post
  34. 300xs parts Diagram???

    Started by jmatak9, 12-18-2023 04:12 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 827
    12-22-2023, 03:43 PM Go to last post
  35. 400R repower

    Started by Wild Bill, 03-24-2024 07:58 PM
    • Replies: 0
    • Views: 146
    03-24-2024, 07:58 PM Go to last post
    • Replies: 18
    • Views: 414
    Today, 07:29 AM Go to last post
  36. 95 200xri temp guage

    Started by terry2, 01-11-2024 11:33 AM
    • Replies: 4
    • Views: 374
    01-11-2024, 05:09 PM Go to last post
  37. 96 Yamaha 75 2 stroke mods

    Started by kellytheaker, 12-23-2023 01:43 PM
    • Replies: 11
    • Views: 2,036
    01-01-2024, 04:18 PM Go to last post
  38. 98 RON non ethanol vs 95 RON E10

    Started by Toffen, 02-22-2024 03:09 PM
    • Replies: 1
    • Views: 162
    02-23-2024, 10:12 AM Go to last post
  39. Air Traps on a Hydroplane

    Started by Spaceman Spiff, 02-07-2024 10:39 PM
    • Replies: 9
    • Views: 660
    02-18-2024, 11:54 AM Go to last post

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