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  1. #1
    ROTAX RACING performance
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    RIVA 15F SC Vortech F-SC and Vortech G-SC

    why has RIVA used the Vortech F or the G series SC on there 15F SC Kits ,

    the F series makes less boost then the G series,

    MACC RACING is using a Vortech H setup on his race Kawasaki


  2. #2
    YAMAPRO's Avatar
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    The Riva supercharger kits are alot smaller than Judge and Macc use. They also do not use cams or ignitions on most of theirs. They are trying to sell a more production type, more reliable setup. Although their kits have spawned more problems than any other due to lack of research and testing.

  3. #3
    ROTAX RACING performance
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    I know that,

    but why is RIVA using 2 SC setup's there is no Information on the RIVA SC KIT

  4. #4
    YAMAPRO's Avatar
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    Closed coarse setup and offshore setup possibly

  5. #5
    Poppa Dawg's Avatar
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    I'm just guessing here, but I have a F- Trim on my Riva built boat. I'm pretty sure mine was one of the first boats built for sell to the public. I think a little later the G-Trim started showing up on the Riva boats. It may have been as simple as what was available on Vortech's shelfs when Riva started building these things. True, the specs show that the G-trim is capable of putting out more maximum boost than the F-trim, but in reality the way the Rev limits are set up the boost out of either will be very close. The Riva boats by way of their set up put out between 10-13 lbs. Both the F & G trim are capable of this with no problem. Any higher boost will really require use of an aftermarket ignition to increase rev limits & change fuel mapping . When this is done the H-Trim has been used because of its apparrent ability to handle more boost at lower temps. I think it also is the only model among these that has ceramic bearings. Just my thoughts. I may be totally wrong.

  6. #6
    ROTAX RACING performance
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    I just talked to Tim Judge, I got all the info now

  7. #7
    please pass it on

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