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Thread: 05 GTX SC

  1. #1

    Question 05 GTX SC

    Anyone know what the Rev Limit on an '05 GTX SC is?


  2. #2
    Doctor 05gtxsc's Avatar
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    someone will correct me if I am wrong ....But I think it is @ 7600 (Stock)
    Last edited by 05gtxsc; 06-12-2008 at 09:51 PM.

  3. #3
    captain obvious Lurker's Avatar
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    Quote Originally Posted by 05gtxsc View Post
    someone will correct me if I am wrong ....But I think it is 7600
    maybe 7650, I can't remember even though I was just looking at it last weekend

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    jpeconsult's Avatar
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    DV...lol...I owe you something, man. You get the "above and beyond" award. You have really helped me the last couple days. Thanks.

  5. #5
    Quote Originally Posted by jpeconsult View Post
    DV...lol...I owe you something, man. You get the "above and beyond" award. You have really helped me the last couple days. Thanks.

    No man, I'm just trying to pay back GH.net for all the help its given me. I've asked a million questions on here........

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    jpeconsult's Avatar
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    Yeah, but you could have faded away like others seem to have. Thanks anyway. I will remember this.

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    Quote Originally Posted by jpeconsult View Post
    Yeah, but you could have faded away like others seem to have. Thanks anyway. I will remember this.

    No problem, glad I could help.

  8. #8

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    I get 7650 (stock gauge). That said, I'm puzzled...
    Does the ECU simply not let you rev the engine above 7650 in a nice gentle sort of way?
    Or should it be the hard bounce off the redline type limiter?
    When I think of rev limiter, I think of my motorcycle or car if you go over red line than there is a hard cut in RPM and the engine bounces off that max RPM. My 05 GTX simply runs up to 7650 RPM and happily stays right there I have an 05 GTX-SC and have added a few mods (4" intake, XS-IC, Riva thru hull, Jerry SC washers) I'm trying to squeeze out some MPH but can't seem to get much. There has been little change in MPH (~.5 to 63) but the pull from standstill is amazing. I want to get some more speed I'm considering a new prop but don't know if it is just a perfect combination. I hit 7650 RPM at ~3/4 throttle squeeze. I checked throttle plate movement and it matches the throttle travel. So, how does the ECU limit speed, it doesn't sound like it's hitting the limiter...

  9. #9
    Focker Foggy's Avatar
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    Sounds to me like you are "on" the rev limiter..
    Repitch your prop so you stay 50-100 under rev limit.

    You should pick up a little top end if you do this

  10. #10
    jpeconsult's Avatar
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    The limiter on my 2005 GTXSC is 7600 AND it is gentle. You can't feel it jerk like some members report. I have never seen anything over 7600. Check to see if you are on the limiter by:

    Put the display on RPM, and go WOT. Slowly ease off the throttle, and notice the exact point at which the RPM move off the 7600 (7650 in your case). If it is 3/4 throttle, you will need to tweek the impeller. The good news is, like Foggy said, should give you 1 MPH per mm bent.

    Do not ride that ski on the limiter too long. You will run lean, and start to melt the exhaust manifold. When that happens, your money goes towards repairs versus mods.

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