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  1. #1
    Therock's Avatar
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    Can someone explain this to me?????

    I have everything RIVA requires for the Stage 2 kit minus the Solas 15/20 impeller. (Only difference is i have the RR IC instead of RIVA.I ordered the impeller and put it on last night. My rpms dropped from max rpm of 8150 to 7700 and my top speed went from 73 to 69. How does RIVA get 75 out of this package???


  2. #2
    Site Admin Green Hulk's Avatar
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    We have all been waiting patiently for the answer to that question.

  3. #3

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    Charles, send the prop to glen trust me. He will fix it.thier repitch
    has been the sh++,made an approx 2 mph differnce for me

  4. #4
    Red Devil's Avatar
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    Rock,
    I went through the same as you. RR ECU, Intercooler, etc. RPM's were 7650 with the Solas. Put the stock prop on and went to 8350 and a 2 mph gain. Sent the Solas to Glen for a "CORRECT" pitch but have not had it out yet. Basically, it sound like your prop.

  5. #5
    Moderator Franko's Avatar
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    Test with your stock prop first. Then try the aftermarket props. That will save you a lot of trouble. And it will give the aftermaket guy a baseline for repitch/improvement.

  6. #6

    Join Date
    Apr 2005
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    Sounds like a repitched is needed to me. When n i talked to Geln and Dave fomr Impros these new four tec. motors need a correct pitched impeller to get the most out of there power.

  7. #7
    Water4fire's Avatar
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    If I read this correctly you did nothing but changed the SC impellor and then your RPM's dropped. He just put it on last night.

    Guys am I missing something. Just with that swap it shouldn't lose anything!

  8. #8
    Therock's Avatar
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    Replaced the impeller....

  9. #9
    INDY27's Avatar
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    Did not want to hear that Are you using the RR exhaust or Riva's thru hull?

  10. #10
    Therock's Avatar
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    PPG's plumbing kit and power pipe.

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