Page 1 of 36 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ... LastLast
Threads 1 to 40 of 1425

Forum: Four Stroke and Direct Injected Two Stroke Engines

Low-emissions outboard engines.

Sponsored by: DBR - Dave Bush Racing

  1. Sticky Thread Sticky: ECDBA Emission performance stock.....

    Started by E-tec1, 11-09-2008 11:30 AM
    3 Pages
    1 2 3
    • Replies: 37
    • Views: 54,928
    06-28-2015, 03:01 PM Go to last post
  1. Optimax Air Injectors

    Started by clayc, 07-15-2022 11:03 AM
    3 Pages
    1 2 3
    • Replies: 36
    • Views: 1,244
    08-06-2022, 07:13 AM Go to last post
  2. 2013 300XS sudden loss of power/rpm

    Started by Lake WI Steve, 08-03-2022 09:19 PM
    • Replies: 5
    • Views: 345
    08-05-2022, 02:35 PM Go to last post
  3. Wink Looking for 300xs Service Manual

    Started by mackey147, 08-05-2022 07:38 AM
    • Replies: 0
    • Views: 51
    08-05-2022, 07:38 AM Go to last post
  4. Merc 300R Fuel Consumption

    Started by Hebert519, 08-03-2022 12:35 PM
    • Replies: 2
    • Views: 263
    08-03-2022, 10:52 PM Go to last post
  5. New v8 300proxs running problem

    Started by Boozin909, 07-03-2022 06:13 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 757
    07-30-2022, 03:31 PM Go to last post
  6. E15 in Etec?

    Started by doug7488, 05-27-2022 11:29 AM
    • Replies: 6
    • Views: 470
    07-26-2022, 09:25 PM Go to last post
    • Replies: 2
    • Views: 212
    07-25-2022, 08:22 PM Go to last post
  7. yamaha F150 balance shaft delete

    Started by davepnola, 07-12-2022 10:15 PM
    • Replies: 6
    • Views: 322
    07-25-2022, 02:53 PM Go to last post
  8. E tec 250 powerhead on ficht midsection

    Started by Tobb1, 07-19-2018 12:59 PM
    • Replies: 9
    • Views: 1,045
    07-24-2022, 12:24 PM Go to last post
    • Replies: 4
    • Views: 5,107
    07-06-2022, 10:28 AM Go to last post
  9. 3 liter water pump problem

    Started by boostalmighty, 06-29-2022 09:30 AM
    • Replies: 6
    • Views: 219
    07-06-2022, 08:27 AM Go to last post
    • Replies: 0
    • Views: 89
    07-03-2022, 09:47 PM Go to last post
  10. 250 ProXS Tuner

    Started by clayc, 06-26-2022 07:41 PM
    • Replies: 7
    • Views: 220
    06-28-2022, 05:19 PM Go to last post
  11. Abort factory breakin mode with ddt

    Started by Stevebbc, 06-24-2022 03:17 PM
    • Replies: 2
    • Views: 161
    06-26-2022, 06:03 AM Go to last post
  12. HPDI high-pressure pump and injector cleaning?

    Started by deCler, 05-04-2022 09:42 PM
    • Replies: 3
    • Views: 270
    06-21-2022, 04:55 PM Go to last post
  13. 3.3 conversion to 3 ltr heads

    Started by MrG, 06-20-2022 10:28 AM
    • Replies: 0
    • Views: 104
    06-20-2022, 10:28 AM Go to last post
  14. 225 HPDI rebuild

    Started by FORBESAUTO, 02-23-2019 07:38 PM
    10 Pages
    1 2 3 4 5 6 7 8 9 10
    • Replies: 143
    • Views: 32,267
    06-18-2022, 04:31 AM Go to last post
  15. Thumbs up 21 Liberator 300R Video Test

    Started by Speed Jr., 05-06-2022 08:19 AM
    • Replies: 14
    • Views: 841
    05-24-2022, 09:21 PM Go to last post
  16. 300R Fourstroke Oil Capacity

    Started by d2kstang, 05-10-2022 12:31 PM
    • Replies: 4
    • Views: 276
    05-11-2022, 06:27 AM Go to last post
  17. 250 ProXS oil leaking

    Started by boatn70, 05-05-2022 08:27 PM
    • Replies: 1
    • Views: 194
    05-06-2022, 02:39 PM Go to last post
  18. 300X cooling issue

    Started by F29DCB, 04-28-2022 02:12 PM
    • Replies: 8
    • Views: 287
    04-29-2022, 12:51 PM Go to last post
  19. 2011 Mercury Optimax 150 no start with starboard temp sensor connected

    Started by Findre, 07-22-2019 03:40 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 9,019
    04-24-2022, 05:11 PM Go to last post
  20. 150 pro xs

    Started by Scrutcher, 04-18-2022 06:12 PM
    • Replies: 1
    • Views: 231
    04-19-2022, 01:30 PM Go to last post
  21. 250xb alien cowl

    Started by AaronB, 04-11-2022 10:48 PM
    • Replies: 0
    • Views: 307
    04-11-2022, 10:48 PM Go to last post
  22. Optimax 200hp air compressor leak

    Started by Davidpkl, 03-27-2022 08:24 PM
    • Replies: 4
    • Views: 433
    04-05-2022, 10:57 PM Go to last post
  23. New to Me 2003 Optimax

    Started by chackett, 03-15-2022 10:08 AM
    • Replies: 8
    • Views: 471
    03-16-2022, 08:18 AM Go to last post
  24. Whats needed to turn a 225 opti into a 250xs ?

    Started by LOSTINJ, 02-26-2022 01:45 PM
    • Replies: 3
    • Views: 447
    03-15-2022, 08:17 AM Go to last post
    • Replies: 18
    • Views: 923
    03-13-2022, 09:20 AM Go to last post
  25. Which 60 hp 4-stroke outboard for my 12' tunnel?

    Started by Boat880, 01-30-2021 01:27 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,498
    03-10-2022, 04:49 PM Go to last post
  26. Yamaha HPDI build/port work (let's talk port timing)

    Started by canuckr, 02-13-2021 12:04 PM
    3 Pages
    1 2 3
    • Replies: 42
    • Views: 4,726
    02-23-2022, 06:39 AM Go to last post
  27. Wireing up a tach: Honda 20hp 4 smoke

    Started by dwiggl, 02-18-2022 03:12 PM
    • Replies: 3
    • Views: 206
    02-19-2022, 01:32 PM Go to last post
    • Replies: 14
    • Views: 553
    02-18-2022, 08:38 AM Go to last post
  28. 300XS rigging hose.

    Started by Reynard38, 02-05-2022 11:21 AM
    • Replies: 7
    • Views: 404
    02-14-2022, 10:49 PM Go to last post
  29. Running rich, 300xs

    Started by DewRonInc, 02-04-2022 10:54 PM
    • Replies: 10
    • Views: 403
    02-12-2022, 12:11 AM Go to last post
  30. Opti 250xs

    Started by mango, 01-12-2022 06:47 PM
    • Replies: 3
    • Views: 607
    01-16-2022, 09:47 PM Go to last post
  31. Quicksilver Reman 250 PROxs Powerheads

    Started by jcoop421, 12-13-2021 07:08 PM
    • Replies: 1
    • Views: 395
    01-13-2022, 09:49 AM Go to last post
  32. New 4 stroke engines

    Started by JM.1776, 12-30-2021 10:27 AM
    • Replies: 9
    • Views: 918
    01-08-2022, 11:04 AM Go to last post
  33. XD-100 oil replacement?

    Started by elite service, 10-28-2011 08:25 AM
    7 Pages
    1 2 3 4 5 6 7
    • Replies: 98
    • Views: 16,447
    12-29-2021, 03:59 PM Go to last post
  34. Bracket

    Started by fastking, 12-20-2021 10:15 PM
    • Replies: 0
    • Views: 225
    12-20-2021, 10:15 PM Go to last post
  35. 300xs Rebuild

    Started by RSWORDS, 04-25-2020 11:21 AM
    2 Pages
    1 2
    • Replies: 27
    • Views: 3,958
    11-18-2021, 10:14 PM Go to last post

Page 1 of 36 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ... LastLast

Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Order threads in...

Note: when sorting by date, 'descending order' will show the newest results first.

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 75 views
Hot thread with unread posts
More than 15 replies or 75 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Aeromarine Research