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  1. #1
    oklagp1200r's Avatar
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    SC Boost Numbers

    What boost numbers do each stock SC's produce? RXP & X SC
    What is the boost for the RXP SC with the RR early wheel?


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by oklagp1200r View Post
    What boost numbers do each stock SC's produce? RXP & X SC
    What is the boost for the RXP SC with the RR early wheel?
    The only one I can truly give you accurate numbers on is the X charger... Stock X charger @ 8100 rpm 11.2 - 11.5 pounds of boost.

  3. #3
    Site Admin Green Hulk's Avatar
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    Stock SC around 7 psi
    With original Rotax Racing high boost upgrade around 9 - 9.4 psi

    Stock X ic 10.5+ at 8100 RPM's

  4. #4
    oklagp1200r's Avatar
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    So the Riva X SC upgraded wheel boost number is what?
    ET 137 wheel for the X SC boost number is what?

    Checking my other options here!

  5. #5
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by oklagp1200r View Post
    So the Riva X SC upgraded wheel boost number is what? 12.5 psi

    ET 137 wheel for the X SC boost number is what? about the same from what i hear. Not many of them out there.

    Checking my other options here!
    ...

  6. #6
    oklagp1200r's Avatar
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    Quote Originally Posted by bigdaddyRXP View Post
    The only one I can truly give you accurate numbers on is the X charger... Stock X charger @ 8100 rpm 11.2 - 11.5 pounds of boost.
    WOW that kind of boost from that X SC I guess my money was well spent

  7. #7
    SeaGoat's Avatar
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    Quote Originally Posted by oklagp1200r View Post
    WOW that kind of boost from that X SC I guess my money was well spent
    I think skoepp posted 10.8 psi as his max boost with the ic relocated and the flame arrestor removed from the intake. I could be wrong on that and he is at a higher altitude. 11.2-11.5 seems a little optimistic to me.

  8. #8
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    Quote Originally Posted by SeaGoat View Post
    11.2-11.5 seems a little optimistic to me.
    Unless my dynotune boost gauge is off (that I doubt) I have never seen it below 11.2 pounds @8100!

    I'm headed out now... want some video

  9. #9
    SeaGoat's Avatar
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    Quote Originally Posted by bigdaddyRXP View Post
    Unless my dynotune boost gauge is off (that I doubt) I have never seen it below 11.2 pounds @8100!

    I'm headed out now... want some video
    I trust you bigdaddy. I'm not doubting your word. This is just the first time I've heard that high of a number. Is that stock or did you do the above mentioned mods. Just curious cause I've got an "X" too. No sense spending big money on a new wheel if this thing already produces this kind of boost.

    PS....It's raining and cold here. I'm jealous.

  10. #10
    oklagp1200r's Avatar
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    Quote Originally Posted by SeaGoat View Post
    I trust you bigdaddy. I'm not doubting your word. This is just the first time I've heard that high of a number. Is that stock or did you do the above mentioned mods. Just curious cause I've got an "X" too. No sense spending big money on a new wheel if this thing already produces this kind of boost.

    PS....It's raining and cold here. I'm jealous.
    Thats what Iam talking about!
    The X SC is a great SC IMO thats why I bought one for my Rxp.
    Going up from here tho by adding another wheel or even upgraded SC will IMO be very costly for the out put of the cash. Maybe my mind will be changed but for now it is what it is
    Thanks guys for all the info!

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