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  1. #1
    WP3223's Avatar
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    Anyone Running a New R&D "SV" Supercharger Wheel?

    It seems as though the ET19 is the hot ticket for the SVHO chargers.

    But was wondering if anyone is running one of the the R&D "SV" SC wheels? I am particularly interested in the SV-C20x, and possibly the SV-C24x (If it's not too big). Looking for maybe just a bit more boost than the ET19, but without going over the top for reliability

    Any real world user input would really be appreciated..
    Last edited by WP3223; 12-01-2014 at 08:19 AM.


  2. #2
    LugNutLS1's Avatar
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    It looks like the optimal wheel for reliability would be the 17 or 20. 20 Seems right in line with the ET19 while the 17 would still be a few lb upgrade vs stock (Not sure if rated for stock cams or not though. I am seeing 16psi on stock wheel now at 8700 with the sho exhaust cam.) The 24 requires new fuel pump, custom program, cams, injectors, and race fuel according to the description.
    "The SV-C24X Racing Monster wheel requires a R&D High Performance Racing Intercooler Kit, R&D 1000cc Fuel Injectors, R&D 340 Fuel Pump Kit, R&D Rising Rate Fuel Pressure Regulator Kit, and R&D SV-C24X ECU Program upgrade for proper fuel and ignition tuning. Also needed is the R&D R2 or R3 Camshaft Kit. R&D also strongly suggests upgrading to R&D/CP Forged High RPM Racing Rods and High Performance Pistons. The new R&D SV-C24X is for all out Racing use and requires 110 octane racing fuel. Boost rated to 20+ @ 8500-8700 rpm and 24 pounds @ 9250 rpm. The R&D SV-C24X series compressor wheel offer the highest levels of airflow and horsepower gains available for the 1.8 Yamaha engine."
    Pt. # 612-24017 SV-C17X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24020 SV-C20X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24024 SV-C24X Monster Wheel / Boost Rating [email protected] / [email protected]

    Just for what its worth with the R&D adjustable gears and SHO exhaust cam my stock svho wheel will be putting out same boost as the C17X will. Or damn close to it.

  3. #3
    WP3223's Avatar
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    Quote Originally Posted by LugNutLS1 View Post
    It looks like the optimal wheel for reliability would be the 17 or 20. 20 Seems right in line with the ET19 while the 17 would still be a few lb upgrade vs stock (Not sure if rated for stock cams or not though. I am seeing 16psi on stock wheel now at 8700 with the sho exhaust cam.) The 24 requires new fuel pump, custom program, cams, injectors, and race fuel according to the description.
    "The SV-C24X Racing Monster wheel requires a R&D High Performance Racing Intercooler Kit, R&D 1000cc Fuel Injectors, R&D 340 Fuel Pump Kit, R&D Rising Rate Fuel Pressure Regulator Kit, and R&D SV-C24X ECU Program upgrade for proper fuel and ignition tuning. Also needed is the R&D R2 or R3 Camshaft Kit. R&D also strongly suggests upgrading to R&D/CP Forged High RPM Racing Rods and High Performance Pistons. The new R&D SV-C24X is for all out Racing use and requires 110 octane racing fuel. Boost rated to 20+ @ 8500-8700 rpm and 24 pounds @ 9250 rpm. The R&D SV-C24X series compressor wheel offer the highest levels of airflow and horsepower gains available for the 1.8 Yamaha engine."
    Pt. # 612-24017 SV-C17X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24020 SV-C20X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24024 SV-C24X Monster Wheel / Boost Rating [email protected] / [email protected]

    Just for what its worth with the R&D adjustable gears and SHO exhaust cam my stock svho wheel will be putting out same boost as the C17X will. Or damn close to it.
    I think you hit it right on the head. The SV-C20x looks like the one on paper, but I am just trying to confirm it's actually better performing the the ET19.

    That was kind my reasoning in even dreaming about the C24x. If it is actually pushing closer to 22#'s of SVHO cfm @ 9250 - that would be the shizzle.

    Depending on what info comes to this thread - I might end up going with the ET19 & keep r safe.

    I just picked up a SVHO charger & am trying to stay ahead of all the bad boy SVHO's now coming together
    Last edited by WP3223; 12-02-2014 at 04:51 AM.

  4. #4
    LugNutLS1's Avatar
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    Appears the C20X is the same on paper as the ET19. Here is quote from another members test regarding the ET19:

    "I tested it right behind Dean and found the same results. Makes 19 psi around 8500 to 8600, then it starts making over 20 psi at 8900. I saw 21 at over 9000 rpms on a good day."

  5. #5
    YudLuz2's Avatar
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    The sv-c20x is probably going to be about the same wheel as the ET 19. The sv-c24x and the sv-c28x wheel are the same. There is only one wheel there. Not two like R&D list. So if you order a sv-c28x it will make 2 more pounds of boost over a ET 19 wheel. It's a 92mm wheel with a larger back plate. And it's made by ET for R&D per there specs

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  7. #6
    WP3223's Avatar
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    Quote Originally Posted by LugNutLS1 View Post
    It looks like the optimal wheel for reliability would be the 17 or 20. 20 Seems right in line with the ET19 while the 17 would still be a few lb upgrade vs stock (Not sure if rated for stock cams or not though. I am seeing 16psi on stock wheel now at 8700 with the sho exhaust cam.) The 24 requires new fuel pump, custom program, cams, injectors, and race fuel according to the description.
    "The SV-C24X Racing Monster wheel requires a R&D High Performance Racing Intercooler Kit, R&D 1000cc Fuel Injectors, R&D 340 Fuel Pump Kit, R&D Rising Rate Fuel Pressure Regulator Kit, and R&D SV-C24X ECU Program upgrade for proper fuel and ignition tuning. Also needed is the R&D R2 or R3 Camshaft Kit. R&D also strongly suggests upgrading to R&D/CP Forged High RPM Racing Rods and High Performance Pistons. The new R&D SV-C24X is for all out Racing use and requires 110 octane racing fuel. Boost rated to 20+ @ 8500-8700 rpm and 24 pounds @ 9250 rpm. The R&D SV-C24X series compressor wheel offer the highest levels of airflow and horsepower gains available for the 1.8 Yamaha engine."
    Pt. # 612-24017 SV-C17X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24020 SV-C20X Monster Wheel / Boost Rating [email protected] / [email protected]
    Pt. # 612-24024 SV-C24X Monster Wheel / Boost Rating [email protected] / [email protected]

    Just for what its worth with the R&D adjustable gears and SHO exhaust cam my stock svho wheel will be putting out same boost as the C17X will. Or damn close to it.
    Therein lies the rub. The fact that you can be making so much boost just by taking the time to correctly set up your SVHO, has forced me to try & step it up a notch. Gotta pull a rabbit out of the hat, to keep my po boy SHO ahead of the game

  8. #7
    WP3223's Avatar
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    Quote Originally Posted by YudLuz2 View Post
    The sv-c20x is probably going to be about the same wheel as the ET 19. The sv-c24x and the sv-c28x wheel are the same. There is only one wheel there. Not two like R&D list. So if you order a sv-c28x it will make 2 more pounds of boost over a ET 19 wheel. It's a 92mm wheel with a larger back plate. And it's made by ET for R&D per there specs
    Ben, Thank you for the real deal info & background scoop! Once I can confirm whether it will fly with my setup, I'm thinking the C24X may be just what the Dr. ordered - or not??
    Last edited by WP3223; 12-02-2014 at 10:09 PM.

  9. #8
    LugNutLS1's Avatar
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    That's a monster of a wheel WP....sure you are wanting to go that high with the requirements listed above? And reliable? You looking to build a race ski or just a fast rec ski? If I am to put a new wheel in I will be staying with ET19 or 20 R&D to keep things trusty and safe....well as trusty as possible with 18+psi lol

  10. #9
    WP3223's Avatar
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    Quote Originally Posted by LugNutLS1 View Post
    That's a monster of a wheel WP....sure you are wanting to go that high with the requirements listed above? And reliable? You looking to build a race ski or just a fast rec ski? If I am to put a new wheel in I will be staying with ET19 or 20 R&D to keep things trusty and safe....well as trusty as possible with 18+psi lol
    Just trying to go with the biggest "rec" setup possible. Thank you for trying to be the voice of reason. As there is such a fine line with boost vs reliability at those levels. The ET19 & SV-C20X both seem to be amazing all around big boost wheels. They would be great for the typical sane build. I may very well just end up there, but wanna do a lil more research to see if I can possibly swing the bigger wheel.
    Last edited by WP3223; 12-02-2014 at 10:07 PM.

  11. #10
    Ale's Avatar
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    reliable and horsepower... go in different direction...
    with that boost... I think you need race fuel... or it's better to use race fuel...
    ...
    I think it's too much for a recreational ski.
    your clutch think the same...

    also tuning correctly afr could be a pita....

    and you will pass your time riding your ski with one eye on water and the other on afr gauge....

    only my opinion.


    post results if you decide to upgrede to this big wheel

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