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  1. #1
    ROTAX RACING performance
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    new dyno boost # ROTAX RACING X SC

    all test are done on the new 350 HP engine incl. RR IC.
    the new 350 HP engine is not the factory engine like zapata has, but it is almost as strong. you can buy that engine for 24.000 EUR incl. IGNI

    the pressure in the chart is in mbar 1000 mbar = 14.5 psi.

    the top chart is from the new ROTAX RCAING SC Impeller with spacer for the x modells.
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  2. #2
    JFizzleJR's Avatar
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    What makes it only for the X models?
    Is the supercharger available seperately from the 24000 EUR engine?

  3. #3
    ROTAX RACING performance
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    that is not a SC, only the SC impeller with a spacer for the X -SC. 136 mm diameter .

    on the 350 HP engine that SC Impeller is in a watercooled SC housing.

    the spacer with the new RR SC Impeller will add 11 kw power (14 HP)

  4. #4
    approximate boost levels in psi

    stock RXP-X SC
    9.8 psi @8100
    11.2 psi @8500
    11.6 psi @8700

    new RR spacer & impeller for X models
    11.2 psi @8100
    12.3 psi @8500
    13.0 psi @8700
    Last edited by Green Hulk; 02-15-2008 at 01:29 PM.

  5. #5
    what are the boost levels for the rr spacer fan for the 215 hp modles

  6. #6
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by yellow jacket View Post
    what are the boost levels for the rr spacer fan for the 215 hp modles

    12.6 PSI of boost at 8800 RPM's.
    at 8100 RPM's around 10 PSI

    As a comparrison, the Green Charger and Rotax Racing high boost drop in impeller produce around 9.4 - 9.8 psi at 8100

    Riva stage 3 will make around 11 psi at 8100 RPM's. (i have seen as high as 11.7)

    Rude Charger will make 12.5 at 8100 and will make upper 13's, some into the 14's at 8500 RPM's
    Last edited by Green Hulk; 02-15-2008 at 12:41 PM.

  7. #7
    Hydrotoys's Avatar
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    So this one is different than the last high boost from RR?

  8. #8
    West Texas RXP skoepp's Avatar
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    I am alittle confused on what RR wheel you are describing. Ok, new rr wheel with spacer for X model because of a bigger housing supposed????

    Is there a new rr wheel setup for the stock SC housing on 215 engine.???


  9. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by skoepp View Post
    Is there a new rr wheel setup for the stock SC housing on 215 engine.???

    no, thats the old one i just described.

  10. #10
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by Hydrotoys View Post
    So this one is different than the last high boost from RR?
    Yes, the one malte posted about is for the X models. The X models have a larger diameter impeller than the 215 HP units

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