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  1. #1
    HoopsRXT's Avatar
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    Low Temp Thermostat Observation

    I am currently installing my Rotax Racing low temp thermostat. When received it in the mail i couldn't tell how this was different than the OEM one since there were no extra marking to indicate that it was different.

    I looked at the back of the thermostat(engine side) and saw that it was marked 55 degrees celcius. When i removed the OEM one that one was marked 87 degree celcius. I could see that one would think that there is a 32 degree difference but mistake that for 32 degrees in farenheight. I found an online conversion and figured there is a 57 degree farenhieght diffence.

    OEM Thermo 87 celcius= 188.60 Farenhieght
    Rotax Thermo 55 celcius= 131 Farenhieght
    Difference 57.60 Farenhieght

    Advertised temp is 70 celcius= 158 farenheight

    I may have mis read the lower temp thermostat and i would double check but it is already bolted in place.

    This is all food for though and just my observations that i thought i would share. Maybe some can check Riva's and see if theirs is the same or different. i have no problem with the lower temp. More boost can keep my engine warm.
    Last edited by HoopsRXT; 08-08-2007 at 03:10 PM.


  2. #2
    Fast & Loud meeper's Avatar
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    mine said the same thing....

    lower than 158 works for me.....

  3. #3
    Banned User
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    The Rotax is a 158 degree unit...OEM is about 190-195...

  4. #4

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    Quote Originally Posted by HoopsRXT View Post
    I am currently installing my Rotax Racing low temp thermostat. When received it in the mail i couldn't tell how this was different than the OEM one since there were no extra marking to indicate that it was different.

    I looked at the back of the thermostat(engine side) and saw that it was marked 55 degrees celcius. When i removed the OEM one that one was marked 87 degree celcius. I could see that one would think that there is a 32 degree difference but mistake that for 32 degrees in farenheight. I found an online conversion and figured there is a 57 degree farenhieght diffence.

    OEM 87 celcius= 188.60
    Rotax 55 celcius= 131
    Difference 57.60

    Advertised temp is 70 celcius= 158 farenheight

    I may have mis read the lower temp thermostat and i would double check but it is already bolted in place.

    This is all food for though and just my observations that i thought i would share. Maybe some can check Riva's and see if theirs is the same or different. i have no problem with the lower temp. More boost can keep my engine warm.
    my stat works ok

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