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Forum: Technical Discussion

  1. Smile Sticky Thread Sticky: Building A looper Beast

    Started by R Austin, 05-14-2012
    63 Pages •
    1 2 3 ... 63
    1021 Attachment(s)
    • Replies: 622
    • Views: 1,196,558
    R Austin
    07-17-2023 Go to last post

  1. Need Advise on Breaking in new pistons and rings

    Started by Fastjeff57, 04-06-2020
    2 Pages •
    1 2
    • Replies: 10
    • Views: 12,760
    Roflhat
    04-11-2020 Go to last post

  2. Need a Good Place to Get a Block Bored Out

    Started by Fastjeff57, 09-23-2019
    • Replies: 5
    • Views: 19,677
    zul8tr
    09-26-2019 Go to last post

  3. Mystery Fuel Pump

    Started by Fastjeff57, 08-24-2011
    1 Attachment(s)
    • Replies: 1
    • Views: 1,951
    MTECHMARINE
    08-25-2011 Go to last post

  4. Ventilating a Non-Thru Hu Prop

    Started by Fastjeff57, 10-02-2012
    • Replies: 5
    • Views: 2,645
    sheuninck
    10-02-2012 Go to last post

  5. Ever See What Suzuki Reed Valves Look Like?

    Started by Fastjeff57, 09-11-2012
    1 Attachment(s)
    • Replies: 2
    • Views: 1,963
    Fastjeff57
    09-15-2012 Go to last post

  6. How about building a true piston port?

    Started by Fastjeff57, 10-05-2012
    3 Attachment(s)
    • Replies: 6
    • Views: 4,169
    Fastjeff57
    10-07-2012 Go to last post

  7. Vibration Problems on a Homemade SPecial

    Started by Fastjeff57, 06-27-2013
    2 Attachment(s)
    • Replies: 7
    • Views: 2,964
    deanwilson
    06-27-2013 Go to last post

  8. Basic Prop Geometry Question

    Started by Fastjeff57, 05-21-2014
    • Replies: 1
    • Views: 2,300
    champ20B
    05-21-2014 Go to last post

  9. 1990 Yamaha 70 hp Triple Firing Order

    Started by Fastjeff57, 06-07-2014
    • Replies: 1
    • Views: 2,256
    Fastjeff57
    06-08-2014 Go to last post

  10. Ring Wear Question

    Started by Fastjeff57, 11-05-2015
    2 Pages •
    1 2
    1 Attachment(s)
    • Replies: 19
    • Views: 15,574
    Ron Hill
    11-11-2015 Go to last post

  11. Fastest 4 bladed prop for 25hp motor on Inflatable rescue boat small to large swell.

    Started by Fazz2001, 06-29-2017
    • Replies: 0
    • Views: 1,898
    Fazz2001
    06-29-2017 Go to last post

  12. what was done to this crank?

    Started by fbref5269, 08-07-2009
    3 Pages •
    1 2 3
    crank 13 Attachment(s)
    • Replies: 26
    • Views: 10,773
    fbref5269
    08-09-2009 Go to last post

  13. 250cc harrison question

    Started by fbref5269, 08-17-2009
    3 Pages •
    1 2 3
    250cc, harrison, question 8 Attachment(s)
    • Replies: 24
    • Views: 9,224
    fbref5269
    08-18-2009 Go to last post

  14. omc triple 70 carbs

    Started by ferdthe4, 07-26-2018
    10 Attachment(s)
    • Replies: 3
    • Views: 5,943
    LittleCharger
    07-29-2018 Go to last post

  15. OMC 56 Oval Port Specs.....Some very suprising results

    Started by filthy phill, 09-01-2017
    1 Attachment(s)
    • Replies: 0
    • Views: 6,006
    filthy phill
    09-01-2017 Go to last post

  16. Look at this for a power increase claim...3% more power from new type spark plug ?

    Started by filthy phill, 09-11-2017
    • Replies: 0
    • Views: 8,508
    filthy phill
    09-11-2017 Go to last post

  17. Casting Alluminium the myths and facts....

    Started by filthy phill, 09-11-2017
    2 Attachment(s)
    • Replies: 2
    • Views: 8,694
    Per
    09-12-2017 Go to last post

  18. why does an oval port have an advantage over a bridgeport motor for holeshot

    Started by filthy phill, 03-12-2017
    2 Pages •
    1 2
    • Replies: 13
    • Views: 9,405
    filthy phill
    03-16-2017 Go to last post

  19. Raising the ports sky high on oval port 56

    Started by filthy phill, 03-22-2017
    1 Attachment(s)
    • Replies: 7
    • Views: 4,750
    fs5
    03-27-2017 Go to last post

  20. rev limiter on omc 3 cylinder ? seems it can be done easy

    Started by filthy phill, 06-09-2017
    2 Pages •
    1 2
    • Replies: 17
    • Views: 7,805
    filthy phill
    08-15-2017 Go to last post
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