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Thread: 582 coolant thermostat

  1. #1
    924549's Avatar
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    Mar 2009
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    Prince George B.C.
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    38

    Unhappy 582 coolant thermostat

    I am having problems keeping my engine temp over 140 this winter and it takes a long time to warm up. I do all the things like blocking part of the cooler and stuff but was thinking why not use a thermostat. Rotax does not seem to sell the motor with a thermostat yet provide one if you want it, and I have read that it's not a good idea. What do you guys do and use? Has anyone had issues with using a thermostat?
    Pieter
    Kitox IV 1050
    582 70" IVO IFA

  2. #2
    Senior Member Mnflyer's Avatar
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    Jun 2008
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    Default Re: 582 coolant thermostat

    HI, I don't know where you read that using a thermostat is not the thing to do, I feel it is absolutely necessary, not only for warm up but to maintain engine temps on descents and to prevent shock cooling and engine seizure. I wouldn't consider operating a 582 without a Tstat. Check this story.
    Last edited by Mnflyer; 01-03-2011 at 04:44 PM.
    GB
    Flying a HKS Kitfox III and a Champ

  3. #3

    Join Date
    May 2009
    Location
    FRANCE
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    Default Re: 582 coolant thermostat

    Same engine no problem i only obstruct part of the radiator with aluminium adhesive tape, on the other hand i suffer with difficulties to initiate it in cold weather and you ?

  4. #4

    Join Date
    Nov 2009
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    england
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    Default Re: 582 coolant thermostat

    Hi 924549
    The thermostat in my 582 is stamped 8-93 130 .Keeps temp right,all UK seasons,no messing with rad covers .MNFlyer has the answer

  5. #5

    Join Date
    May 2010
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    B.C.
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    49

    Default Re: 582 coolant thermostat

    Hi all, does the thermostat bolt on to the engine block or can you use an inline thermostat and which way is the better way to go.Should I be able to order on from a local rotax snowmobile dealer?

    Thanks Willis

  6. #6
    Senior Member Mnflyer's Avatar
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    Default Re: 582 coolant thermostat

    Hi Willis, no inline thermostat, it fits in the engine cylinder head housing very simple to install, there is a NAPA P/N but I don't have it, but I'm sure you can get one at a Rotax snowmobile dealer that's where I got mine many years ago.
    http://www.ultralightnews.com/engine...ostatintal.htm
    Last edited by Mnflyer; 01-03-2011 at 04:46 PM.
    GB
    Flying a HKS Kitfox III and a Champ

  7. #7

    Default Re: 582 coolant thermostat

    Picked this from an old post ...Napa Thermostat part # 18-3558
    I dont remember the temp for this therm, but should be 160 deg

    I run this thermostat in my gray head and the water temp stays on 160
    wether the plane is pointed up or down
    Last edited by akflyerbob; 01-04-2011 at 03:39 PM.

  8. #8

    Join Date
    Jan 2011
    Location
    Ireland
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    11

    Default Re: 582 coolant thermostat

    I have the same cool running issue in Ireland and blank off about half the radiator during the winter months to get the water temp into the green. Does the retrofit of a thermostat apply to a silver top or blue top?

    J

  9. #9
    Senior Member Mnflyer's Avatar
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    Default Re: 582 coolant thermostat

    Hi Soarhead, both engine can and should be so equipped.
    GB
    Flying a HKS Kitfox III and a Champ

  10. #10

    Join Date
    Jan 2011
    Location
    Ireland
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    Default Re: 582 coolant thermostat

    Thanks MNflyer, I'll include this mod in my next scheduled maintenance.

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