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  1. #11
    L8RBRA's Avatar
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    Dumb question. Do hulls not have provisions for adequate air intake for SC models?
    Obvious answer here would be NO but thats why Im curious.


  2. #12
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by L8RBRA View Post
    ... hull ... provisions for adequate air intake for SC models?

    ...
    Some of the modifications for air intake flow path are more about the temperature of the air arriving at the inlet to the supercharger. The front storage compartment being used as a sealed air box does this. Redirecting the stock intake air tubes to deliver air more directly to the engine air inlet area is also intended to reduce the air temps at the inlet.

    Some hull designs can impose slight air pressure differences when the engine is inhaling huge air volumes at full chat. Cutting extra holes into the inner hull, modifying or removing covering body panels, removing water splash deflectors or internal vent tubes, and similar changes are aimed at reducing the air pressure delta.

    The engine physically heats the surrounding air inside the hull, despite the engine water jackets and the rather high rate of fresh air flow into the hull while riding. Reducing the air temperatures right where the air enters the engine air inlet allows the supercharger to work with slightly denser air (since the air is cooler), thereby delivering a little more compressed air out of the supercharger.

  3. #13
    L8RBRA's Avatar
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    Quote Originally Posted by K447 View Post
    Some of the modifications for air intake flow path are more about the temperature of the air arriving at the inlet to the supercharger. The front storage compartment being used as a sealed air box does this. Redirecting the stock intake air tubes to deliver air more directly to the engine air inlet area is also intended to reduce the air temps at the inlet.

    Some hull designs can impose slight air pressure differences when the engine is inhaling huge air volumes at full chat. Cutting extra holes into the inner hull, modifying or removing covering body panels, removing water splash deflectors or internal vent tubes, and similar changes are aimed at reducing the air pressure delta.

    The engine physically heats the surrounding air inside the hull, despite the engine water jackets and the rather high rate of fresh air flow into the hull while riding. Reducing the air temperatures right where the air enters the engine air inlet allows the supercharger to work with slightly denser air (since the air is cooler), thereby delivering a little more compressed air out of the supercharger.
    Makes sense. No different than blowers on cars except you are dealing with a much more confined and heated area with limited air from outside.

  4. #14
    Pokaplaya75's Avatar
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    How would this setup work on a N/A ski like the VXR?

  5. #15
    Pokaplaya75's Avatar
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    Quote Originally Posted by IanM88 View Post
    No - Kanaflex goes to front storage compartment. 4" holes are new vents for engine compartment, as old vents feed fresh air to storage.
    Where did you find that k&N short filter. I've only seen the longer cone ones

  6. #16
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Pokaplaya75 View Post
    Where did you find that k&N short filter. I've only seen the longer cone ones
    It's in the GreenHulk Store


    Riva K&N 4" Marine Air Filter

    This is the proper air filter for watercraft applications. It is a stainless steel mesh screen that will not rust. No cotton gauze is used which will...
    RK13090-2 $59.95


  7. #17
    Pokaplaya75's Avatar
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    Thank you Jerry��

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