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  1. #1
    Golden Jet red fox's Avatar
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    Question After X-Charger ( impeller or Nozzle )

    I just check my RXT (2007) after last modification

    The maximum RPM 7800 RPM Speed ( GPS 71.5 mph ) The boost 9 PSI !!

    The Temperature was 109 F - sea level - water Temperature 89 F

    Mod :

    X-Charger + ( Riva Washer )
    Rotax R Thermostat
    4" Air intak
    42 injector
    Riva Grate
    XS InterCooler +Filter
    Riva Pro Block off OPAS
    Catch can
    Solas 15/20 ( out of box )
    Riva 2 degree wedge
    Wallbro fuel bump
    Riva Water Box


    New wearing
    oil - check the level is okay

    The med range is Awesome ( Awesome acceleration )

    i ask some professional

    Some say : depitching your trailing edge of the impeller 2 mm
    other Say : just machine the Nozzle to 86 mm

    * i never depitching impeller before

    * by the way what the original size for Stock RXT and RXP ??

    Thanks in advance


  2. #2

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    Quote Originally Posted by red fox View Post
    I just check my RXT (2007) after last modification

    The maximum RPM 7800 RPM Speed ( GPS 71.5 mph ) The boost 9 PSI !!

    The Temperature was 109 F - sea level - water Temperature 89 F

    Mod :

    X-Charger + ( Riva Washer )
    Rotax R Thermostat
    4" Air intak
    42 injector
    Riva Grate
    XS InterCooler +Filter
    Riva Pro Block off OPAS
    Catch can
    Solas 15/20 ( out of box )
    Riva 2 degree wedge
    Wallbro fuel bump
    Riva Water Box


    New wearing
    oil - check the level is okay

    The med range is Awesome ( Awesome acceleration )

    i ask some professional

    Some say : depitching your trailing edge of the impeller 2 mm
    other Say : just machine the Nozzle to 86 mm

    * i never depitching impeller before

    * by the way what the original size for Stock RXT and RXP ??

    Thanks in advance
    lol
    stock is 83mm....... i think it is just way to hot where you are you can depitch or add a bigger ring or wait for some cooler weather.....not.lol

  3. #3
    Golden Jet red fox's Avatar
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    Quote Originally Posted by busa504 View Post
    lol
    stock is 83mm....... i think it is just way to hot where you are you can depitch or add a bigger ring or wait for some cooler weather.....not.lol
    Cooler No Way

    The Best cooler scenario is 82 F

    We Are in The Hell MAN !!! lol

  4. #4
    2006 Turbo RXP boBO's Avatar
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    Do you mean 108 is HOt LOOOOl
    today in KUWAIT at 2pm the weather was 122F
    hahaha

    bro i'm from kuwait and i can help you ALOOOOOOOOOT
    just shoot me with PM

    Quote Originally Posted by busa504 View Post
    lol
    stock is 83mm....... i think it is just way to hot where you are you can depitch or add a bigger ring or wait for some cooler weather.....not.lol

  5. #5
    Golden Jet red fox's Avatar
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    Quote Originally Posted by boBO View Post
    Do you mean 108 is HOt LOOOOl
    today in KUWAIT at 2pm the weather was 122F
    hahaha

    bro i'm from kuwait and i can help you ALOOOOOOOOOT
    just shoot me with PM
    122F =50 C OMG

  6. #6
    West Texas RXP skoepp's Avatar
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    I wouldnt change stock nozzle to 86 mm as then you are stuck with 86 mm nozzle when it cools down. Better would be machine your nozzle to accept rings or you could get a pro nozzle. get rings from 81 to 85 and run a 85 and you might gain 100 rpm. THen when it cooled down you could put a 83 back in.
    I think in your heat you need to take a little pitch out of prop and that would be my best reccomendation and run stock nozzle.

  7. #7
    Golden Jet red fox's Avatar
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    Quote Originally Posted by skoepp View Post
    I wouldnt change stock nozzle to 86 mm as then you are stuck with 86 mm nozzle when it cools down. Better would be machine your nozzle to accept rings or you could get a pro nozzle. get rings from 81 to 85 and run a 85 and you might gain 100 rpm. THen when it cooled down you could put a 83 back in.
    I think in your heat you need to take a little pitch out of prop and that would be my best reccomendation and run stock nozzle.
    i think i Gonna Try 14/19 again


    what about : if i run RIVA ECU .......?!

    wish me a good luck

    Thanks for advice bro

  8. #8
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by red fox View Post
    i think i Gonna Try 14/19 again

    It might work better for you right now in the heat and then you got your 15/20 for when it gets down to 82F.


    what about : if i run RIVA ECU .......?!

    YOu would need to upgrade the engine internals and run 50s. I would reccomend a fuel regulator with that setup and a way to monitor AFR and adjust as needed.

    wish me a good luck

    Thanks for advice bro
    Good luck!!!

  9. #9
    Richieb's Avatar
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    Need to get the RPM up a little. It sounds like the impeller is loaded just a little too much.

    Try a 14/19 solas, reduce the ring to 1mm less.

    So there's the shopping list.....

    Too hot for me mate, unless am on the water skiing..!

  10. #10
    Golden Jet red fox's Avatar
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    Quote Originally Posted by Richieb View Post
    Need to get the RPM up a little. It sounds like the impeller is loaded just a little too much.

    Try a 14/19 solas, reduce the ring to 1mm less.

    So there's the shopping list.....

    Too hot for me mate, unless am on the water skiing..!
    i will try my best

    First : i will change the impeller .


    Thanks

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