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polaris ultra thermostat questioln.

This is a discussion on polaris ultra thermostat questioln. within the General forums, part of the Snowmobiles category; as most of you know i am putting the ultra motor in my iqr. i was wondering if the thermostat is necessary for the ultra ...

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Thread: polaris ultra thermostat questioln.

  1. #1
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    sTOrMy96's Avatar
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    polaris ultra thermostat questioln.

    as most of you know i am putting the ultra motor in my iqr. i was wondering if the thermostat is necessary for the ultra motor. can i leave it out of the iqr or do i have to find a way to jam that in there? if i dont use it what would be the problem with it? or will it be fine?
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    UltraJunkie's Avatar
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    The Ultra's didn't have a thermostat so I don't think you need it.
    2002 XCR 800 - rock stock and rips
    1996 Ultra RMK - SLP triple pipes - not for sale
    1994 XLT SKS - wife's ride - rock stock and minty
    I have 150 miles this season

  3. #3
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    sTOrMy96's Avatar
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    I will have to post a pic when I get home. It has one. Right bu the coolant tank
    Last edited by sTOrMy96; 12-08-2013 at 01:34 PM.
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    Gianni_CRX's Avatar
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    Stormy your right about the ultra having 1..... I don't know if you can ditch it or not.. W/O the thermostat the sled would take a while to warm up......no? I dont know if, or what other issue it may cause....... Interesting!
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    The ultra motor and the 800 xcr motors are very similar I run an xcr motor in my xc and iqr don't use thermostat in either have had no issues.

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    IndyRXL's Avatar
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    i ran my ultra powered edge without one, it was fine. I dont think all ultras had one, my doner sled didn't have it,
    01 XCSP 680 ultra swap

    96 XCR 600

    95 supersport 440

    79 TX 340

  7. #7
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    sTOrMy96's Avatar
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    I know my ultra did. If I can get away without it I won't use it. It is already so crammed in there I would have a hell of a time making that fit as well.
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    UltraJunkie's Avatar
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    Neither one of my 96 Ultra's have a thermostat. Stormy I believe yours was an SPX, correct? I don't think there was much of a difference in the motor itself. Not sure why some have the stat and some don't.
    2002 XCR 800 - rock stock and rips
    1996 Ultra RMK - SLP triple pipes - not for sale
    1994 XLT SKS - wife's ride - rock stock and minty
    I have 150 miles this season

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    Gianni_CRX's Avatar
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    Weird... My '96 SP has 1.... But, it is from a newer machine.... not factory for my Ultra.... Why would some have 1 & others not?
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    680ultraX4's Avatar
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    I have 4 ultra SP's..Two 96's a 97 and a 98 none of them have thermostats.They don't come with thermostats,some people put inline Thermostats on them like the SPX or XCR 800,s
    Last edited by 680ultraX4; 12-08-2013 at 07:14 PM.

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