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  1. #1
    scorpion herbert merino's Avatar
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    Max rpms to get peak performance

    hi, what its the max rpms to get the peak performance of 4tec s/c engine? i want to know that before sending my ecu to powership, i think 9100 rpms rev.limit to run at 9000 rpms. feedback please


  2. #2
    zerowake's Avatar
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    Quote Originally Posted by herbert merino View Post
    hi, what its the max rpms to get the peak performance of 4tec s/c engine? i want to know that before sending my ecu to powership, i think 9100 rpms rev.limit to run at 9000 rpms. feedback please

    i may be wrong, but i think 9100 is pretty high. You definately need to upgrade the valves, springs, etc if your motor is running that fast.

  3. #3
    RustySeaRustyDoo's Avatar
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    Quote Originally Posted by zerowake View Post
    i may be wrong, but i think 9100 is pretty high. You definately need to upgrade the valves, springs, etc if your motor is running that fast.
    Looks like from his signature he already has these...

  4. #4
    Site Admin Green Hulk's Avatar
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    Since we are using a centrifugal supercharger the more RPM's we turn the more power the engine will make. The engine has to be able to live at those RPM's though.

  5. #5

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    I wonder what would happen with 15-17psi @8100?

  6. #6
    R88ory RXP's Avatar
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    Quote Originally Posted by jawz View Post
    I wonder what would happen with 15-17psi @8100?
    What SC do you know about then Jawz??? I want 1 that makes that much boost at 8100. I suppose if you went with a different drive system it is possible?? What boost is engineer mike making with his turbo on stock ecu?? I know turbo power is different but would give an idea?? R88

  7. #7
    speedskixp's Avatar
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    Another thing to consider is jet pump efficiency. I think that one you start getting much above 9000 the ability of the pump to process any more water is slim and would not be very beneficial. Atleast from what I have heard anyway.

  8. #8
    West Texas RXP skoepp's Avatar
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    9,000 plus is some serious rpm for our motors. Heck Nascar motors dont even last that long at those rpms. I think it would be pushing the envelope to the max as far as reliability.

    I also have heard the situation that SpeedSkiXP stated on our pumps being able to process the water at those rpms.

    Good Luck!!

  9. #9
    Ride Hard! aha's Avatar
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    Maybe go with a bigger pump?

  10. #10
    scorpion herbert merino's Avatar
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    thanks for the feedbacks, im thinking (if possible) to program the lerning key @ 8300 rpms for regular use and the other one to racing use, 9000 rpms but no full trottle more than 15 sec.

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