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Thread: Johnson 75 Stinger outboard

  1. #1
    Team Member BayCity17's Avatar
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    Question Johnson 75 Stinger outboard

    Does anyone have experience with props on a Johnson Stinger 75? (1972)
    It is on a 15ft 69 Galaxy tri hull.
    The motor looks like it has a omc workhorse prop on it currently and seems to need a change. Just looking for a little more performance out of the old beast. Any suggestions on what props work well would be great.


    Thanks
    Last edited by Mark75H; 06-13-2011 at 06:45 PM.

  2. #2
    BoatRacingFacts VIP
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    Default 75

    i imagine its a heavy boat, a 13 x 15 might be all you can do. get a tach and if only spinning around 5k, i think you need to step down further. if she is really turning up, try a 13 x 17, but my guess is, it isn't.

    i just realized, it is a stinger, do you know if it is the 15 inch or 20? the 15 is geared higher than the 20, so the props i mentioned above are probably too much on a heavy boat like the galaxy. if it is a 15 inch, you can get a nice chunk of change for it and use that money to put a v-4 evinrude on it and have money left over.

  3. #3
    Team Member BayCity17's Avatar
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    Default Stinger

    Its the long 20" with the big gearcase i believe. The boat is fairly wide but not too heavy for a 15ft. I haven't installed a tach yet. I just feel like there is a little more rpm and speed to be had..
    Thanks,
    Jim

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    Sam Cullis Mark75H's Avatar
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    I think you should buy a tach before a prop.

    The Galaxy is on the heavy side for 15 foot trihulls
    Since 1925, about 150 different racing outboards have been made.


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    there wasnt a 75hp engine in 72
    do you have the model number or a photo fo the powerhead

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    Team Member BayCity17's Avatar
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    Default Stinger

    Ide have to check the numbers to make sure it is a 72? Iv'e seen 65hp stingers from that era also so its possible thats what it is. Probobly a tach would be a good idea. Before trying props.
    tHANks for the input>
    Jim

  7. #7
    Sam Cullis Mark75H's Avatar
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    Don't think I've ever seen a 65 Stinger
    Since 1925, about 150 different racing outboards have been made.


  8. #8
    Team Member ima75man's Avatar
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    Quote Originally Posted by Mark75H View Post
    Don't think I've ever seen a 65 Stinger
    under the 65 on back on cowl, it says mean machine
    out front again

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    Team Member BayCity17's Avatar
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    It does say Mean Machine!

  10. #10
    Team Member ima75man's Avatar
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    Quote Originally Posted by BayCity17 View Post
    It does say Mean Machine!
    of coarse.. good little moters,, some of the early moters had electric shift lower units, it's easy to make a short out of it..
    out front again

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