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Thread: '97 40 Yamaha upgrade

  1. #1
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    Default '97 40 Yamaha upgrade

    Who would y'all recomend to do some power upgrades on a '97 40Yam 3 cylinder?

  2. #2
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    Before you molest that motor, sell it to me and upgrade to a 50 hp
    "Hunt today to kill tomorrow." - Ron Jolly

  3. #3
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    hahaha I just want a little more out of it. I don't want a race motor.

  4. #4
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    Cost of investment to increase power/speed will likely not be worth the ROI.
    The right to bear arms is the last form of defense against tyranny.

  5. #5
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    90 pistons.

    It'll change your life.
    "Freedom Isn't Free"
    _Spc. Thomas Caughman
    1983-2004

    Quote Originally Posted by Dook View Post
    Go tigers!

  6. #6
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    What hull is the 40 on? What prop at what RPM are you turning? Jack plate? There might be "more" in it if you just get the setup right. Give us more information!
    "Think A Guy Like Me Worries About Percentages?" Tin Cup

    "Some get spiritual cause they see the light, and some cause they feel the heat" Ray Wylie Hubbard

    "P.S. I love turkeys. Mostly just hate those who hunt em." Glenn

  7. #7
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    Quote Originally Posted by JBK View Post
    What hull is the 40 on? What prop at what RPM are you turning? Jack plate? There might be "more" in it if you just get the setup right. Give us more information!
    This is what I was getting at.
    The right to bear arms is the last form of defense against tyranny.

  8. #8
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    Going to be on a 1754 War Eagle come Friday. Tiller. I know, I know hull is big. I just like this little motor and don't want to get rid of it. Like I said, Just want a little more push out of it.

  9. #9
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    Quote Originally Posted by tman View Post
    before you molest that motor, sell it to me and upgrade to a 50 hp
    edit: Upgrade to a 90 hp
    "Hunt today to kill tomorrow." - Ron Jolly

  10. #10
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    Quote Originally Posted by Stack View Post
    Going to be on a 1754 War Eagle come Friday. Tiller. I know, I know hull is big. I just like this little motor and don't want to get rid of it. Like I said, Just want a little more push out of it.

    There's a difference in "more push" and more speed. A 40 can be fast on a small boat but it won't make the torque that a larger boat needs.

  11. #11
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    Add a few more stickers to that yeti and it'll up it about 10hp.

  12. #12
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    Buy you a tuner or make one and bolt carbs on it. Clip gray wire and blast off

  13. #13
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    Honestly, just prop it right and roll on. I wouldn't go threw the hassle for 2mph
    "Think A Guy Like Me Worries About Percentages?" Tin Cup

    "Some get spiritual cause they see the light, and some cause they feel the heat" Ray Wylie Hubbard

    "P.S. I love turkeys. Mostly just hate those who hunt em." Glenn

  14. #14
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    2 mph?

  15. #15
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    What Santee said.

    The only difference between a Yammie 40 & 50 is the input and the exhaust. Open up the carb jets and put an aftermarket exhaust tuner. Get the motor up on the transom some, put on a tiny tach to determine the rpm. Find ya a good prop that'll spin 6000+ and roll with it baby like Steve Winwood.
    Last edited by willyworm; 09-02-2015 at 07:11 PM.
    [SIGPIC][/SIGPIC]
    Delta in a nutshell: Breeding grounds + small wetlands + big blocks of grass cover + predator removal + nesting structures + enough money to do the job= plenty of ducks to keep everyone smiling!

    "For those that will fight for it...FREEDOM...has a flavor the protected shall never know."
    -L/Cpl Edwin L. "Tim" Craft

  16. #16
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    Quote Originally Posted by GreenHeadRocker View Post
    Add a few more stickers to that yeti and it'll up it about 10hp.
    Naw silly that just makes you a cooler fella.
    [SIGPIC][/SIGPIC]
    Delta in a nutshell: Breeding grounds + small wetlands + big blocks of grass cover + predator removal + nesting structures + enough money to do the job= plenty of ducks to keep everyone smiling!

    "For those that will fight for it...FREEDOM...has a flavor the protected shall never know."
    -L/Cpl Edwin L. "Tim" Craft

  17. #17
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    Quote Originally Posted by willyworm View Post
    Naw silly that just makes you a cooler fella.
    No wonder all the cool kids never talk to me at the sandbar.
    1648 Tracker Grizzly
    Yamaha 70 2 stroke


  18. #18
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    That and they got beard envy.
    [SIGPIC][/SIGPIC]
    Delta in a nutshell: Breeding grounds + small wetlands + big blocks of grass cover + predator removal + nesting structures + enough money to do the job= plenty of ducks to keep everyone smiling!

    "For those that will fight for it...FREEDOM...has a flavor the protected shall never know."
    -L/Cpl Edwin L. "Tim" Craft

  19. #19
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    Quote Originally Posted by willyworm View Post
    Naw silly that just makes you a cooler fella.
    Well played sir

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