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  1. #1

    Join Date
    Jun 2006
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    Winchester VA
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    4in intake adapter ?

    I got bored at work the other day and decided to go play in the machine shop. So I'm playing on the lathe when I thought about making an adapter for my 4in intake tube. I know I jumped the gun because I don't have the proper measurements but I was only playing. I took some 4in aluminum round stock, faced it off at about 2in long or a little shorter. Bored a 2.99in hole. Then I cut a 45 degree inlet and smoothed it all out finishing with 800 grit sandpaper. Then drilled and tapped 3 small holes through the side and put set screws in there to clamp it onto the SC. It turned out very nice, but, do I have the ID right. My ski is in winter storage an hour away so it's not convenient to just throw in on and see if it fits. Can somebody tell me what the ID needs to be?


  2. #2

    Join Date
    May 2005
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    ocean nj
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    If my caliper is correct it is 2.8385in or 72.10mm but dont forget the s/c has a raised bead at the end to keep the original hose from coming off.Hope this helps.

  3. #3
    Tom Clarke's Avatar
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    May 2005
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    Surf City, California
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    274
    The SC accepts 2.75" ID Hose>
    T C

  4. #4

    Join Date
    Jun 2006
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    Winchester VA
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    49
    So it looks like I made it a little too big. I may still be able to work with it. Hope so, it's such a pretty piece.

  5. #5
    Gotta love this sport! 05Limited's Avatar
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    Stockton, CA
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    Quote Originally Posted by 98Hawk View Post
    So it looks like I made it a little too big. I may still be able to work with it. Hope so, it's such a pretty piece.
    98Hawk,

    With this sleeve the opening is around 3.07" without even compressing the rubber. I'll bet your adapter could be "persuaded" over it for a nice tight seal. If it's a little too tight just chuck the adator in the lathe and take off a little.

    You can have it if you like.

    Jeff
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  6. #6
    98Hawk,

    Cut the piece in half...so that you are left with 2 "C" shaped pieces...then have them tapped to screw together.

    Another poster does them like that. They work really nice.

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