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  1. #1

    Join Date
    Oct 2009
    Location
    derbyshire
    Posts
    76

    951 carb jetting?

    Just changed my impeller from stock to a solas concord 15/20(new wear ring too) and now it's alot better for cruising but it won't rev past 6400rpm on the counter. Taking the stock air box off and replacing with filters.... What size jets should I be looking at fitting?? Any help appreciated
    Ski is doing 56.4 on gps at these revs with r&d grate


  2. #2
    SURFnTURF's Avatar
    Join Date
    May 2007
    Location
    Australia
    Posts
    878
    +1
    11
    The reason why your revs are way down is the 15/20 is too tall a prop to push(needs repitching)in a stock boat and the [email protected] intake grate pulls too much water into the pump and loads it too much which keeps revs down.The stock grate is better for rec riding.

    JETTING SPECS

    Accelerator pump inactive.

    95 low speed jets open 1.5 turn's
    165 high speed jets both closed
    2.0mm Needle and seat
    spring rate to achieve 20 psi pop off (usually black one)most people dont use this one !

    If Accelerator pumps are ACTIVE

    Same set up as above but 87.5 low speed jets open 1.5 turn's.

    Low speed jets

    refer to the pop off chart to get the psi pop off.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  3. #3
    +1 on SURFnTURF's recommendations....

    He re-jetted my ski after he sourced Pro K's and outer wears for it and it was a day and night difference.

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