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  1. #1

    Engine back in - Cooling sys popoff valve question

    Just spent the entire day putting my SL 650 engine back myself! Only said 143 bad words and two knuckles escaped damage.

    When installing all the hoses, I remembered that my cooling system pop off valve was in bad shape so I tossed it and the rusty spring. Been looking on-line and don't see any! Is it permissible to run without it. I have the thermostat and it checks ok with a hot water test.

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    Last edited by K447; 06-03-2012 at 11:31 PM.

  2. #2
    Screwed up the picture placement somehow......

  3. #3
    I like pipes. I love boost Mr. GP1800's Avatar
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    Jun 2010
    Milwaukee WI
    The thermostat will do nothing without the popoff valve. If you generally ride in warm water, you should be ok without the thermostat or popoff valve installed. Otherwise you could get a replacement spring and valve from Polaris.

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