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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
    6 Pages •
    1 2 3 4 5 6
    3 Attachment(s)
    • Replies: 76
    • Views: 253,939
    rjdubiel
    07-07-2025, 08:51 AM Go to last post

  1. NOS Question?

    Started by malexie, Yesterday 11:21 AM
    • Replies: 3
    • Views: 548
    CI STV
    Today, 01:32 PM Go to last post

  2. Keep or replace engine - comparisson

    Started by ADVTRACING, Yesterday 04:55 PM
    1 Attachment(s)
    • Replies: 5
    • Views: 723
    David
    Today, 12:46 PM Go to last post

  3. Prop shaft Mercury 450R

    Started by Toffen, 08-05-2025 02:05 PM
    • Replies: 2
    • Views: 614
    Sutphil
    Yesterday, 08:30 AM Go to last post

  4. Need major help

    Started by bulldogfiremen, 08-18-2013 01:31 PM
    2 Pages •
    1 2
    • Replies: 23
    • Views: 2,287
    108
    Yesterday, 02:11 AM Go to last post

  5. Upper tilt pin-15" mid

    Started by 25two.stroke, 11-25-2025 12:46 PM
    2 Attachment(s)
    • Replies: 4
    • Views: 1,819
    25two.stroke
    12-04-2025, 01:44 PM Go to last post

  6. Chris carson marine

    Started by ChrisCarsonMarine, 12-03-2025 08:39 AM
    • Replies: 5
    • Views: 954
    skialot2
    12-03-2025, 08:55 PM Go to last post

  7. Merc 150 4S

    Started by tj309, 11-27-2024 04:55 PM
    3 Pages •
    1 2 3
    7 Attachment(s)
    • Replies: 31
    • Views: 6,326
    Tcatrett
    12-03-2025, 01:50 PM Go to last post

  8. oil seal replacement with out the special tool

    Started by delawarerick, 11-30-2025 10:07 AM
    • Replies: 6
    • Views: 1,053
    powerabout
    12-03-2025, 12:41 AM Go to last post

  9. 1993 MERCURY 135 HP motor mods?

    Started by Carter Powell, 11-30-2025 04:01 PM
    • Replies: 3
    • Views: 807
    4Speed
    12-02-2025, 05:16 PM Go to last post

  10. 1988 Mercury 2.0 v6, need some pros on this one.

    Started by 88Laguana, 10-20-2025 06:05 PM
    2 Pages •
    1 2
    9 Attachment(s)
    • Replies: 24
    • Views: 8,574
    donmac
    11-30-2025, 05:26 PM Go to last post

  11. 93 2.5 260 Dallas Tx

    Started by deuce2x2, 11-25-2025 12:47 PM
    • Replies: 9
    • Views: 3,538
    mercrazy
    11-28-2025, 02:43 AM Go to last post

  12. yamaha 2.6l cylinder heads - what's the difference?

    Started by Tinkertoy250, 11-10-2025 01:38 PM
    • Replies: 2
    • Views: 3,252
    Tinkertoy250
    11-27-2025, 03:54 PM Go to last post

  13. Yamaha 40 Issue Finally Found

    Started by markt111, 07-08-2025 10:02 AM
    • Replies: 1
    • Views: 1,965
    88workcar
    11-27-2025, 11:31 AM Go to last post

  14. Wingplate Hydraulic Steering

    Started by chubsta, 11-25-2025 09:56 PM
    • Replies: 4
    • Views: 2,314
    donmac
    11-27-2025, 10:20 AM Go to last post

  15. Can you retain Analog Gauges if you replace older Mercury Outboard with New 300R?

    Started by Rocco, 11-14-2025 11:22 AM
    1 Attachment(s)
    • Replies: 4
    • Views: 2,241
    LakeFever
    11-26-2025, 08:27 PM Go to last post

  16. Gambler w/ 200 SuperMag consistent Hub Failure/Exhaust Leak/Timing

    Started by MURRAYGAMBLERSUPERMAG, 11-13-2025 04:28 PM
    1 Attachment(s)
    • Replies: 6
    • Views: 3,972
    MURRAYGAMBLERSUPERMAG
    11-26-2025, 08:33 AM Go to last post

  17. Adapt mercury square steering hub to teleflex?

    Started by XstreamVking, 11-25-2025 01:10 PM
    • Replies: 4
    • Views: 1,430
    transomstand
    11-25-2025, 09:37 PM Go to last post

  18. Nitrous on 2.5 Drag

    Started by CI STV, 12-09-2024 08:27 AM
    13 Pages •
    1 2 3 4 5 6 7 8 9 10 ... 13
    65 Attachment(s)
    • Replies: 190
    • Views: 43,429
    CI STV
    11-25-2025, 06:45 PM Go to last post

  19. 245/260 Carbs

    Started by SS170, 11-22-2025 09:18 PM
    • Replies: 5
    • Views: 3,720
    tlwjkw
    11-25-2025, 10:07 AM Go to last post

  20. 1957 Mercury Mark 75 pistons

    Started by cjbrill715, 11-24-2025 08:54 AM
    1 Attachment(s)
    • Replies: 3
    • Views: 1,377
    skialot2
    11-24-2025, 11:52 AM Go to last post

  21. Wiseco Pistons

    Started by NRAINES38, 11-23-2025 07:42 PM
    • Replies: 4
    • Views: 1,146
    NRAINES38
    11-23-2025, 10:49 PM Go to last post

  22. Who can balance a flywheel for me.

    Started by Carter Powell, 11-14-2025 11:39 AM
    3 Pages •
    1 2 3
    1 Attachment(s)
    • Replies: 37
    • Views: 10,112
    David - WI
    11-22-2025, 04:53 PM Go to last post

  23. Looking for a head

    Started by 36Tango, 11-21-2025 06:15 PM
    • Replies: 3
    • Views: 1,872
    Chaz
    11-21-2025, 11:01 PM Go to last post

  24. "Over the Hub" Props for Mercury 400/450 Single Engine Boats - Plane Issues?

    Started by wagoetzmann, 10-27-2025 11:44 AM
    • Replies: 7
    • Views: 4,560
    billybob
    11-21-2025, 05:30 PM Go to last post

  25. Connecting rod weight question?

    Started by Carter Powell, 10-28-2025 12:14 PM
    • Replies: 5
    • Views: 4,648
    Chaz
    11-21-2025, 11:24 AM Go to last post

  26. Mercury Tech: Inline Block Preservation

    Started by MNhunter1, 11-20-2025 02:23 PM
    2 Attachment(s)
    • Replies: 2
    • Views: 2,043
    KIRCHNER
    11-21-2025, 08:01 AM Go to last post

  27. Mercury Tech: RPM stays 7000 RPM regardless of Propeller pitch 24-29 Choppers or drags.

    Started by PropmanIII, 11-10-2025 03:34 PM
    • Replies: 7
    • Views: 3,674
    rjdubiel
    11-19-2025, 04:56 PM Go to last post

  28. School me on OMC V8 Outboards

    Started by NoLimits, 08-04-2025 10:38 AM
    4 Pages •
    1 2 3 4
    4 Attachment(s)
    • Replies: 45
    • Views: 145,159
    powerabout
    11-16-2025, 10:55 PM Go to last post

  29. Hulls that are prone to spilt turn.

    Started by NZ Sidewinder, 07-05-2025 04:19 PM
    4 Pages •
    1 2 3 4
    6 Attachment(s)
    • Replies: 47
    • Views: 85,015
    deathdealer
    11-09-2025, 06:43 AM Go to last post

  30. Drive shaft repair

    Started by Brian, 11-07-2025 08:18 AM
    • Replies: 3
    • Views: 1,881
    deathdealer
    11-09-2025, 06:38 AM Go to last post

  31. 141 connecting rods

    Started by Carter Powell, 11-08-2025 04:50 PM
    • Replies: 0
    • Views: 673
    Carter Powell
    11-08-2025, 04:50 PM Go to last post

  32. 300x Powerhead

    Started by 36Tango, 11-05-2025 02:27 PM
    1 Attachment(s)
    • Replies: 9
    • Views: 3,183
    36Tango
    11-08-2025, 07:32 AM Go to last post

  33. Re ring and hone?

    Started by hevysrf, 11-06-2025 06:24 AM
    2 Attachment(s)
    • Replies: 6
    • Views: 1,523
    CRH1
    11-06-2025, 06:44 PM Go to last post

  34. trim gauge issues

    Started by jflan224, 11-04-2025 02:19 PM
    • Replies: 10
    • Views: 2,078
    jflan224
    11-05-2025, 04:07 PM Go to last post

  35. How hard should it be to turn an outboard by hand?

    Started by Bumblebeeman, 10-31-2025 07:11 PM
    • Replies: 4
    • Views: 1,895
    25two.stroke
    11-05-2025, 02:51 PM Go to last post

  36. Mercury Tech: 87 voyager prop selection problems

    Started by jflan224, 11-03-2025 11:11 PM
    • Replies: 7
    • Views: 1,288
    jflan224
    11-05-2025, 11:14 AM Go to last post

  37. Angry My Hydrostream is a pig

    Started by Wiski, 09-05-2001 09:55 AM
    2 Pages •
    1 2
    • Replies: 29
    • Views: 3,357
    Wiski
    11-04-2025, 10:45 AM Go to last post

  38. 1150SS. 15" Identification

    Started by oldschoolnc, 08-16-2025 07:40 AM
    3 Pages •
    1 2 3
    12 Attachment(s)
    • Replies: 44
    • Views: 9,951
    KIRCHNER
    11-04-2025, 08:55 AM Go to last post

  39. Mercury Tech: 300x analog trim gauge wiring

    Started by simpson_3, 08-10-2021 07:09 PM
    • Replies: 14
    • Views: 1,985
    jflan224
    11-03-2025, 08:07 PM Go to last post

  40. 3 liter lower

    Started by boatguy09, 11-02-2025 09:16 PM
    • Replies: 3
    • Views: 1,200
    boatguy09
    11-03-2025, 04:51 PM Go to last post
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