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 I have a STORM RG with a ROTAX 914 engine, since 2015. I am in Brazil and the temperature is rarely below 25 ° C, I usually operate more between 27 and 36 ° C. The big problem is the increase in engine temperature, when in a ramp of 400 feet / min, the temperature rises to 115 ° C, when I need to stabilize, increase the speed and decrease the temperature and only then continue on the upward path again. If I force it, the temperature reaches 120 ° C. Recently, I bought a piece of fiber that passes through the engine, forcing ventilation through the fins of the cylinders, but I am waiting for the part to arrive. Does anyone in the group have an engine with this ventilation part? If 914 the reference is better, another point is how much ventilation should be improved with this device (part)?

I ask your help to indicate me better.

Awaiting return

Rogério Amarante

 

Rogério Amarante

  • Re: ROTAX 914 engine ventilation

    by » one month ago


    Roger said in what I am guessing is Portuguese:

    Folks,

     I have a STORM RG with ROTAX 914 engine, since 2015. I am in Brazil and the temperature is rarely below 25 ° C, I usually operate more between 27 and 36 ° C. The big problem is the elevation of the engine temperature, when on a 400 ft / min ramp the temperature rises up to 115 ° C, when I have to stabilize, increase the speed and lower the temperature and only then continue on the upward path again. If I force it, the temperature reaches 120C °. A little while ago I bought a piece of fiber that goes over the engine forcing ventilation through the fins of the cylinders, but I am waiting for the piece to arrive. Does anyone in the group have an engine with this ventilation part? If it is 914 the reference is better, another point is how much ventilation should be improved with this device (part)? 

    I ask your help to better refer me.

    Awaiting return

    Rogério Amarante

    - - -

    Roger, Please!  Forum rules require ALL posts to be in English... Google Translate can be your interpreter.


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


    Thank you said by: RotaxOwner Admin

  • Re: ROTAX 914 engine ventilation

    by » one month ago


    The air going through the cooling Fins is secondary in this engine.  It is a water-cooled engine.

    I would make an effort to get more air going through the Radiator or getting a larger radiator.


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


  • Re: ROTAX 914 engine ventilation

    by » one month ago


    It will be more easy to identify problem if we  know that which type of coolant use?

    Engine 914 suffix 01?

     My experience shows that :  Stuffix 1 with Dex coolant 50/50, maximum amount of fresh Air req for cooling the engine as compared to old model engine. ie Evan's coolant.

    Temperature ranges also different for both configuration.

    Fresh Air throwing on radiator requirements is also mentioned in book.

    So ROGERIO amarante tão esperando por mais informações sobre seu mecanismo?

    Or.

    so waiting for more information about your engine ?

     

    25476_2_Screenshot_2020-04-06-05-47-41-673_com.manualslib.app.png (You do not have access to download this file.)

    Thank you said by: john gunn

  • Re: ROTAX 914 engine ventilation

    by » one month ago


    My friend

    This temperature that I mentioned is the oil temperature (115 ° C) the water temperature is between 95 to 100 ° C. My engine, the temperature sensor that says water, is actually the head, because the sensor has no contact with the water circulating in the engine


  • Re: ROTAX 914 engine ventilation

    by » one month ago


    90-110°C is the normal operating Oil Temp.  130°C is the max allowed.

    115°C Oil Temp is not out of line during the initial WOT climb. 

     

    In looking at the Storm RG, the specs show it is under 1000lbs Max gross and should have a 1200 fpm climb rate with the 100hp 912ULS.

    You should be climbing at nearly 1500 fpm with the 914 Turbo Engine. NOT 400!

    I am going to guess that you are lugging the engine and overheating it.

    What engine RPM do you see in the initial climb?  It should be over 5600 RPM and ideally closer to 5800 at Wide Open Throttle (WOT).

     

     


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


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