Thread: Fast Fred's OMC Mod 50 secrets Thread #2

  1. #751
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    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

  2. #752
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    I was wondering what you use for a reducer, a baseball bat real cool Fast, real cool. An sst60 tuner measures 2 3/8" x 2 3/8" at one end and 1 1/2" x 1 3/4" at the base plate, now if I did my math correctly that works out to a 2" x 3" pipe reducer, thinking I'll be using that on my next winter project and I probably can get that in aluminum and in stainless, curious though, what would you do on a 20" mid?

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    A tuner being longer then what the sst 60 specs call for do you really loose that much top end?

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    Quote Originally Posted by sharpeye Mike View Post
    I was wondering what you use for a reducer, a baseball bat real cool Fast, real cool. An sst60 tuner measures 2 3/8" x 2 3/8" at one end and 1 1/2" x 1 3/4" at the base plate, now if I did my math correctly that works out to a 2" x 3" pipe reducer, thinking I'll be using that on my next winter project and I probably can get that in aluminum and in stainless, curious though, what would you do on a 20" mid?
    Oh and would you loose the can?

  5. #755
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    Quote Originally Posted by sharpeye Mike View Post
    Oh and would you loose the can?
    the hotter the exhaust the faster it travels......
    in both directions, now you know what to do.
    In the sst45 class they check the size of the hole that cools the tuner as they know its an area where you gain

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    https://www.facebook.com/lindsay.smi...4100955&type=3

    Hi Fred I have a 75 stinger 15inch with nitro foot
    Just wanting to know wat I exactly have
    Not sure if link will work new to this site
    Lindsay

  7. #757
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    from hear, lookin like a Stinger 75, could be a 65. is the coin still in the top of the block?

    welcome to BRF

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

  8. #758
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    fred no there no welsh plug in the block with any identification numbers or any on the hanging bracket. it has the race bracket on it with through hull trim mount
    its got 2bbls and when testing with omc test wheel engine reaCHED 8200rpm and we shut it down .
    wats the max rpm you would run ?
    ill post a picture of the set up its running on
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    also have a 50hp s/syamaha with trim/tilt if anyone is interested all oem parts
    when u refer to 49.7 c and 56r which engine are they specificly
    lindsay

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    its a 49er with maybe a custom inlet manifold and either its a 55 or it has a go fast exhaust plate system or its actually is a Mod 50?
    can you take a photo from the stb side

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    Quote Originally Posted by Powerabout View Post
    its a 49er with maybe a custom inlet manifold and either its a 55 or it has a go fast exhaust plate system or its actually is a Mod 50?
    can you take a photo from the stb side
    Attachment 56050
    ok thanks powerabout
    knowing exactly what it is will allways help

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