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  1. #1
    tottii's Avatar
    Join Date
    Mar 2008
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    ABU DHABI
    Posts
    62

    what next mod (now C kit sc)

    My mods

    C kit R sc 16 psi
    over size light valve
    les cooke Ratiner
    head ported
    les cooke ECU
    60 injectors
    4" Filter
    R&D intake
    Fuel Reglator
    14/19R solas
    Reduction Nozzle 83
    2 degree wdges

    RPM 8700
    Speed 77.6

    I try to 15/22R but RPM 8000

    i want to reach 80 and more

    Some time i feel good acceleration and some time normal

    what do i need


  2. #2
    ROTAX RACING performance
    Join Date
    Apr 2005
    Location
    sweden
    Posts
    1,462
    +1
    17
    you have a problem with your engine, make a comression test

    for 8000 RPM @ 15/22, you need 260 HP, so thats what you have now

    but with the C-Kit and 60 lb Injectors, and ECU and ported head you should have 8800 with the 15/22 easy.

    maybe the mechanic screw up the CAM timming, valve leaking, damage piston rings, check the fuel pressure regulator with a external gauge.
    the fuel regulator need to be at 60 psi with teh DESS key in/engine off

    its time for the workshop , not the forum

  3. #3
    JFizzleJR's Avatar
    Join Date
    Aug 2005
    Location
    FL
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    8,628
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    808
    I see on your list "2 degree wedges"...If it's not an error and you really have more than one wedge, the extra wedge will slow you down 1-1.5 MPH.

  4. #4
    formerly Gold06RXP Turbo Nick's Avatar
    Join Date
    May 2007
    Location
    Dayton, OH
    Posts
    2,095
    +1
    97
    You should be way over 80 easily. If the charger is makig 16 PSI thats about right for 8700. So check the condition of your engine. Leak down test, cam timing, plugs, compression test
    Quote Originally Posted by tottii View Post
    My mods

    C kit R sc 16 psi
    over size light valve
    les cooke Ratiner
    head ported
    les cooke ECU
    60 injectors
    4" Filter
    R&D intake
    Fuel Reglator
    14/19R solas
    Reduction Nozzle 83
    2 degree wdges

    RPM 8700
    Speed 77.6

    I try to 15/22R but RPM 8000

    i want to reach 80 and more

    Some time i feel good acceleration and some time normal

    what do i need

  5. #5
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
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    2,524
    Quote Originally Posted by tottii View Post
    My mods

    C kit R sc 16 psi
    Have you verified with a boost gauge that you are getting 16 psi?
    If not i suspect you have a slipping supercharger clutch or a boost leak.

  6. #6
    dduck dduck1628's Avatar
    Join Date
    Apr 2007
    Location
    St Augustine FL
    Posts
    623
    Do you an LM-1, LM-2 or any other way to measure AFR?

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