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  1. #1
    imp0ster's Avatar
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    7600pm after a ton of mods

    Stock I hit 8100 RPM and 64.xx-mph on GPS. Today I ran 69.00 dead on GPS but couldn't break past 7600RPM. WTF!?!? from stock I put on an X-Charger, 42s, 2* wedge, opas pro delete, 14/19R, SF nose cone, new SS wear ring, Riva intake, gutted waterbox, reverse bucket mod, plate holes filled, riva through hull, new plugs and brand new syn oil. Any ideas? I don't have a wrench accurate enough for the inch pound slip on the SC which I think it probably is. Are there any other possibilities?

    FYI full tank of gas when it was stock and now both 93 octane. Todays run was 67* water temp, 78* air temp and 7 inch chop.
    Last edited by imp0ster; 03-05-2012 at 11:02 AM.


  2. #2
    West Texas RXP skoepp's Avatar
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    Did you figure out why exhaust temp went off?
    What year and ski?
    Did you check slip of the SC before installing?

  3. #3
    Moderator beerdart's Avatar
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    e-temp is exterior temp there is no readout for exhaust temp.

  4. #4
    speedskixp's Avatar
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    Did you buy the impeller used? 69 with a 14/19r @ 7600 doesnt sound right.

  5. #5
    West Texas RXP skoepp's Avatar
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    I agree with Speedskixp something seems odd, and the more I think about it your moving pretty good to be running 69 on rxt (if that's the ski) at 7600 rpm.
    Sounds like everything is correct except alot more pitch then can pull.

  6. #6
    boostedpgt's Avatar
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    did you check the clearance between the impeller and wear ring? just a little bit too much clearance makes a very big difference. i replaced mine with a cheap aftermarket one before and i also only had about 7600rpm. replaced it with a real sea doo one and it was back to 8100+

  7. #7
    mac_man_luke's Avatar
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    Id have thought it would turn a 14/19 no problems

    I have a 15/20 in my GTX with 2mm taken off the trailing edge and worst i get is 7800 rpm on a 42ºC (108ºF) day

  8. #8
    monaroman76's Avatar
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    Quote Originally Posted by speedskixp View Post
    Did you buy the impeller used? 69 with a 14/19r @ 7600 doesnt sound right.
    +1, that's what I'm thinking. Sounds like someone has played around with the pitch.

  9. #9
    West Texas RXP skoepp's Avatar
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    Really does not seem there is much wrong besides too much pitch.
    Your going to be 72 - 73 range once your rpms are at 8100 rpm.
    That is in line with what my rxt ran with x setup.

  10. #10
    imp0ster's Avatar
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    Quote Originally Posted by skoepp View Post
    Really does not seem there is much wrong besides too much pitch.
    It has to be more then 19 degrees to pull 69 at 7600 rpm.
    Your going to be 72 range once your rpms are at 8100 rpm.

    That is close to what my rxt would run with x setup.
    sorry it was H-Temp that flashed and killed me. It's an Impros guaranteed impeller fresh off their shelf. I've run their impellers about 6 times now with 0 issues. Engine sounds good but I know there is another 3 or 4 mph I am missing. I did not check SC slip as it was brand new off the shelf and the TQ wrench I have errrs on the heavy side. Doesn't make a difference when I'm torquing down on my car heads at 90ft/lbs but in an instance of inch/lbs I just don't trust it.

    I just bought the 160* off another member and will have it in soon enough. What's the correct nut TQ on a stock X-SC?

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