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Thread: Yamaha build up

  1. #1
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    Default Yamaha build up

    Finally had some time, next summer we will be back on the water...


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    Team Member 88workcar's Avatar
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    Very nice! 70 with 90 carbs, light flywheel. and I am sure more than the obvious. Should scream. I am building one just like it on a 12" mid right now.
    Helping folks out around the globe.

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    FFX-61
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    loose the choke plates and shafts,

    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

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    What kind of lines are those? I need to replace oil and fuel lines on my yamaha.

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    Thanks, i hope it will.
    Has some mild porting, shaved heads...
    Thought about it, but i will loose ease of starting and i think i wont gain much...
    It are tygon hoses, used with the merc engines...

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    Team Member Roflhat's Avatar
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    Looking good

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    Team Member Roflhat's Avatar
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    Quote Originally Posted by 88workcar View Post
    Very nice! 70 with 90 carbs, light flywheel. and I am sure more than the obvious. Should scream. I am building one just like it on a 12" mid right now.
    Any photos of your 12" mid? Would love to see something like that on a modifed SLT transom

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    Just worked on one of these, but it didn't have those yellow hoses. What do they do?

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

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    Those are just the bleed lines that take mixed gas that builds up in the c/case back to the intake.

  10. #10
    Team Member proprider01us's Avatar
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    Default 40hp Yamaha

    Here's a 40hp model that I put on a 9" mid.
    Name:  3cyl Yamaha.jpg
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