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  1. #1

    Waverunner 500 performance help

    I've had this WaveRunner 500 since i was a kid and lately its been a little sluggish and i was wondering what kind of performance upgrades i should do short of having the engine rebuilt......I've been looking at parts all over the internet and i have absolutely no clue where to start......I enjoy a challenge that is why i want to up my current pwc instead of buying a new one


  2. #2

    Join Date
    Jan 2006
    Location
    Texas City, Texas
    Posts
    1,249
    +1
    15
    After so many years your engine gets weak just from wear and tear. If you were to add upgrades (to the engine) for performance, certain parts of the motor may not be able to handle the strain.

    I would suggest a complete rebuild with a mild port and compression. Group K is really good at helping your "stock engine" perform to its potential and at the same time, operating realiably.

    Give Harry or Gerhardt a call. They are interesting people to work with. At least get on their web site.

    www.groupk.com

  3. #3
    Old Ski Insanity w/rpm500's Avatar
    Join Date
    Aug 2005
    Location
    Crystal River Fl
    Posts
    2,208
    you can go thru the engine pretty cheaply .. find the gasket set and piston ring kit on ebay ... they are import pistons (WMC?) but if you want a cheap build they'll work... strip it down first and then figure out what you need... check your pump too , as this being as old as this is the pump will prob.need some new components...
    make it faster look for this stuff..


    PROTEC NOZZEL
    PROTEC CDI LIMITER
    PROTEC SS PIPE
    DG WATER BOX
    JETWORKS VALVE WITH LIMITER VALVE(still not installed)
    ELECTRIC BILDGE PUMP
    BOYSENS REEDS(updated#)
    INTAKE GRATES AND PLATES (all kinds..)
    SOLAS SS IMPELLER
    LIGHTENED FLYWHEEL(yami/protec)
    HOT PRODUCTS CONE EXTENDER
    PROK QUICK FIT f/a
    MIKUNI PRIMER
    MIKUNI SBN-R(650)
    MILLED HEAD (.030 stocker)

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