Polaris PWC Knowledge

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    Upgrades, modifications

    Upgrade to a factory sealed AGM battery

    Alternate ride plates

    Intake grates

    Jet pump exit nozzle wedges

    The pump wedge changes the exit force of the water jet, pushing the rear down and lifting the nose higher.
    This generally provides better top speed, but can aggravate porpoising on the shorter hulls unless a longer ride plate or trim tabs are in place
    Wedges exist in angles from two degrees to eight degrees

    Polaris only made 2 aluminum wedges and they were painted black (one is a 4 degree wedge, the other a 'twisted' wedge (which is junk).
    All the other factory 4 degree wedges were plastic.
    The 2, 3, 5, 6 wedges were sold separately and not painted

    3 Degree Wedge Polaris Part# 2900078
    (2 and 3 degree wedges may be close to optimal on the short SL hulls)
    Six degree wedge sources Polaris OEM PN was 2900077

    Note: Some SLX780 and SL900 models (1995-1996?) came with an unusual 'twisted' wedge, angled stator tail cone, and 3/16" longer water tube

    Alternate impellers

    Alternate and adjustable pump exit nozzles

    PWC captive drain plug upgrades

    Replace that old drain plug with a better design

    How the jet pump works - Into the Pump

    Aftermarket hull sponsons, how they work - Beach House


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