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  1. 06-08-2021, 08:15 AM #1
    XMP
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    Operating temperature

    At what temperature should a 115 fourstroke sn 2b216247 operate in 75 degree water and 80 degree air temperature while running at 5500 rpm?
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  2. cmbtvet
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    #2 06-11-2021, 11:14 AM
    Quote Originally Posted by XMP View Post
    At what temperature should a 115 fourstroke sn 2b216247 operate in 75 degree water and 80 degree air temperature while running at 5500 rpm?
    I'm not sure about the 115 but my 200 Pro xs runs between 136 and 140
    2000 Ranger 518vx - 2019 Mercury Pro xs 200
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  3. SilverFox579
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    #3 06-12-2021, 10:00 AM
    On plane temperature will vary, if the warning horn isn't sounding and Guardian isn't activating your temperatures are fine.
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  4. XMP
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    #4 06-12-2021, 11:43 AM
    I am afraid it's not running hot enough.
    Last edited by XMP; 06-12-2021 at 03:41 PM.
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  5. getfished
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    #5 06-13-2021, 10:23 AM
    In theory it shouldn't matter the air or water temp. The thermostat manages the engine temp , not the air or water temp.
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  6. EuropeanAM
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    #6 06-13-2021, 08:04 PM
    Yes, in theory (though in theory it shouldn't matter how heavy you load the boat either... but it does).

    Engine temps can vary WIDELY based on air, water temps- loading, trim angle and engine RPM.

    So in short- really not possible to answer the original question. Let's get the temperature you ARE running (FROM SMARTCRAFT) under those conditions....?


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  7. SilverFox579
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    #7 06-14-2021, 08:40 AM
    Begs the question, do the 4-stroke engines have poppet valves, if yes, are stats out of circuit once it opens (like the 2-strokes)?
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  8. EuropeanAM
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    #8 06-14-2021, 06:35 PM
    Quote Originally Posted by SilverFox579 View Post
    Begs the question, do the 4-stroke engines have poppet valves, if yes, are stats out of circuit once it opens (like the 2-strokes)?
    Some do, some don't. That's an engine-specific topic.


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  9. SilverFox579
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    #9 06-15-2021, 11:12 AM
    Quote Originally Posted by EuropeanAM View Post
    Some do, some don't. That's an engine-specific topic.
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  10. XMP
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    #10 06-19-2021, 12:28 PM
    Quote Originally Posted by EuropeanAM View Post
    Yes, in theory (though in theory it shouldn't matter how heavy you load the boat either... but it does).

    Engine temps can vary WIDELY based on air, water temps- loading, trim angle and engine RPM.

    So in short- really not possible to answer the original question. Let's get the temperature you ARE running (FROM SMARTCRAFT) under those conditions....?
    It is 120 while running wot.
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  11. EuropeanAM
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    #11 06-20-2021, 12:41 PM
    ^^^ Perfectly fine. May run cooler than that at WOT in cooler weather/water temps.


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  12. XMP
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    #12 06-20-2021, 01:30 PM
    Quote Originally Posted by EuropeanAM View Post
    ^^^ Perfectly fine. May run cooler than that at WOT in cooler weather/water temps.
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