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  1. #1
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
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    Hot Seat Head O-Ring Size

    Does anyone know the size of the outer O-ring (the big one sealing off the cooling water) on a HS Pro 785 head?


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I'm sure Bob does....

    LUGS!!!!! Where are you????????


    Maybe send 785 Pro Mick a PM. He may know, or can at least ask Bob for you.

  3. #3
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
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    Quote Originally Posted by xlint89 View Post
    LUGS!!!!! Where are you????????

  4. #4
    ujustlost's Avatar
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    I would imagine its the same for all after market heads for the pro785. I know for ada heads its 047. But the chambers don't move or change so you would think that the o-ring would have to sit in the same spot on any head.

  5. #5

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    try not to break it put pry it out and take it to a bearing or hardware store ,

  6. #6
    I'D RATHER SWEAT THAN SHIVER hyoctane23's Avatar
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    That would work except I don't have the o-rings anymore.

    I think the 047 is correct because the head groove is a little more than 4-1/2" diameter...more like 4-5/16" diameter. I'll call HS to confirm.

  7. #7
    ujustlost's Avatar
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    Quote Originally Posted by hyoctane23 View Post
    That would work except I don't have the o-rings anymore.

    I think the 047 is correct because the head groove is a little more than 4-1/2" diameter...more like 4-5/16" diameter. I'll call HS to confirm.
    I'm almost possitive its 047 because no matter what head you have the o ring has to sit in the same spot on the jug.

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