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  1. #1
    blowbyu's Avatar
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    Question Boost Numbers......

    I was wondering how must boost is created at the following RPM's and with each super charger wheel:

    Stock supercharger wheel @ 8100 RPMS

    Riva wheel @ 8100 RPMS

    RR Hight Boost Wheel @ 8100 RPMS

    The reason I ask is I'm wondering if is worth purchasing the RR over the Riva. I will be running a Max RPMS of 8100 and from looking at info on this site the RR produces 9.6 PSI at 8500. I assume that it produces less than 9.6 PSI @ 8100 RPMS and I also can assume the Riva is designed to produce max boost at 8100 or around there.

    With this being said and assuming that if both wheels where producing the same amount of boost then is really one better then the other. I might not be taking in consideration as the volume of air could be different of the two wheels and the powerband.


    Can someone enlighten me.


  2. #2

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    Probably the Riva wheel 10.5 -11 lbs

  3. #3
    blowbyu's Avatar
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    Maybe I should clarify the Riva wheel is question is the Riva Vortech Supercharger Impeller.

  4. #4
    Moderator The Bandit's Avatar
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    I would go with the RR wheel. better punch for the $$$

  5. #5
    go with the rr s/c fan

  6. #6
    sleeplessnMS's Avatar
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    AGREE 100% RR WHEEL! 10psi @ 8500-8550

    I've had all that ya listed and the stocker is about 7-7.5, riva MAYBE 1 psi more but the RR is great for the $'s.... BBFB!!!!! I went 78.5-79 with the RR wheel.... That was in the heat btw. I also thi nk a 4" air intake should be mandatory I dont care if the ski is stock!!!!

  7. #7
    blowbyu's Avatar
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    Ok thanks guys RR it is. Anyone know how much boost is produced with the RR @ 8100 RPMs as it cant be 10 PSI.

  8. #8
    Check with JFizzleJR. I think he has an RR wheel for sale and 42# injectors too.

  9. #9
    Anyone ever come up with numbers for the RR impeller at 8200 rpm's?

  10. #10
    Site Admin Green Hulk's Avatar
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    9.6 psi

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