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  1. #1

    inner parts of thermostat removed

    I HAVe bben told by a racing team swith the rotax 300hp engine that they are not using the insides of the thermostat its left empty. please could i hear your comments . thanks again
    also I could add that they also take the spring out of the oil valvue so that its always free and open .


  2. #2
    PAINKILLER's Avatar
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    thats hard to belive. the 4-tec engine needs to be at a certian operating temp to run right.

    but hell you never know with all the new ems system and all.

    jerry will know more about it since he is going with the 285hp set up.

  3. #3
    Quote Originally Posted by PAINKILLER
    thats hard to belive. the 4-tec engine needs to be at a certian operating temp to run right.

    but hell you never know with all the new ems system and all.

    jerry will know more about it since he is going with the 285hp set up.
    THE amount of heat created at the speeds their going I dont think the thermostat comes into play .

  4. #4
    Site Admin Green Hulk's Avatar
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    Interesting. Im going to have to ask Mark Underwood about this.

  5. #5
    captain obvious Lurker's Avatar
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    the engine will take forever to get up to temp

  6. #6
    GTXX's Avatar
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    I used to take the guts out of a thermostat so there was nothing but a disc with a hole in it to restrict the water flow and regulate the engine temp. Doesn't work very good when it's real cold but the guys racing are probably doing it in warm weather.

  7. #7
    Quote Originally Posted by _Lurker_
    the engine will take forever to get up to temp
    with all the modes on these motors , the temp goes up very fast depending on the rpm if at 2000 or 7000 the higher rpm the quicker it the temp goes up .

  8. #8
    CRS's Avatar
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    Thermostats are essential!!! They allow the engine to warm up evenly from front to back and control the flow of water when the engine has warmed up.If the water flows too fast it doesn`t have time to cool the engine properly or it will cool some parts of the engine too much causing excessive wear. The manufactuers don`t put them in for fun and they all fit them.

  9. #9

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    Look at the design of it...It won't force water through the oil cooler. Thats NOT good... the ride plate...not good I wont' start my motor at wot that way... Take that advice...if they pay for your next engine.

  10. #10
    Quote Originally Posted by jawz
    Look at the design of it...It won't force water through the oil cooler. Thats NOT good... the ride plate...not good I wont' start my motor at wot that way... Take that advice...if they pay for your next engine.
    I LOOK forward to hear M ark´s comments ,,,, forcing water through oil cooler,,, I dont understand that comment...

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