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Are you getting the most speed out of your ski you can?

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  • Are you getting the most speed out of your ski you can?

    After working on several Fzr/Fzs This is what I have came up with as far as BEST speed numbers. These speed numbers are based on IF you have air intake, exhaust, rideplate, water intake grate,prop/nozzle, ecm reflash or aftermarket ecm and all the normal things everybody does plus your ski is tuned correctly you are testing in good water conditions and running the ski as free as possible also............ stock sc wheel and no reflash= 73-74 mph add a reflash or aftermarket ecm 7-9 psi of boost= 76-79 mph, 10-12 psi of boost= 80-82 mph, 13-15 psi of boost= 83-85 mph, 16-18 psi of boost= 86-88 mph and over 18 psi of boost 89 mph and up depending on how much boost you can get. This is just what I have seen. Head porting , cam gears and camshafts can give you a even better speed at these boost numbers also. I know some of you are not getting these speed numbers but if everything is done correctly you should be close to these speeds. If you are running these speed numbers or better with that amount of boost then you have done a good job on your ski! If not you need to look and see where you are not getting the best out of your ski. These speed numbers will be less in hot and humid weather also. If you choose to run your ski tighter to the water your ski will be slower. Feel free to respond to this post if you like. Tommy Jordan
    Last edited by 2fast4u; 05-08-2011, 04:56 PM.
    The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

  • #2
    Great info Tommy
    IMO it is not about putting the most parts on your ski, it's about tuning the ski and making the parts work for you. I think a lot of speed is lost in poor pump set ups on a lot of skis.
    2009 FZR- Riva powerfilter, Riva ff exhaust, Riva manifold upgrade, HKS BOV, R&D grate/ ppk, R&D mppa, skat 13/20ish Tiny Tach, 2010 spacer, Modded VX Plate 74.9 @ 7650


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    • #3
      Awesome post Tommy. I agree 100% with the expected speeds vs boost levels and all other supporting mods.
      2016 310R: R&D reflash - free air mods - R&D sponsons - 71.5 @ 7900 rpm

      2008 SHO: R&D C3 SC wheel - R&D cam gears on S2 setting - R&D R3 reflashed ECU - RIVA manifold upgrade - RIVA FF exhaust -JD's cold air intake - RIVA grate - JD's intercooler and cooling kit - custom Skat long blade - R&D sponsons - Jim's modified stock rideplate - 81.9 mph @ 8500 rpm - SOLD

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      • #4
        Originally posted by 2fast4u
        7-9 psi of boost= 76-79 mph, 10-12 psi of boost= 80-82 mph, 13-15 psi of boost= 83-85 mph, 16-18 psi of boost= 86-88 mph and over 18 psi of boost 89 mph....
        300 psi of boost =



        Matching Pair 2009 FZS - with a few bolt-ons (?)
        Matching Pair 2006 RXT's

        Read how LIBERALS want to BAN PERSONAL WATERCRAFT:
        http://www.greenhulk.net/showthread.php?t=60112

        Read how to AVOID DAMAGE to your new PWC:
        http://www.greenhulk.net/showthread.php?t=93951

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        • #5
          Originally posted by YoYamma
          300 psi of boost =

          made me laugh, good start to my mourning. thanks for that.

          Comment


          • #6
            I just wanna get some stuff straight her.
            Now I'm fairly new to the PWC world and I know with my mods I am no where near these speeds. So my question is how much MPH off should I be if I ride in 93* saltwater in closed course trim ???
            2009 FZR:
            RIVA: Power Filter, Rear Exhaust, Intake Manifold Upgrade, E1, Power Cooler Kit, TiAL 50mm BOV, FPR, Vi-PEC ECU, Engine Cooling Upgrade, Engine Breather Upgrade, 160mm pitched by JIM'S PERFORMANCE, Stainless Steel Wear Ring, 160mm Race Pump, Performance Ride Plate, Reduction Nozzle, 86mm nozzle, Valve Train Upgrade, 3 Bar MAP Sensor, 1000cc Injectors, Pro-Series Cylinder Head Stud, Pro-Series Cylinder Head Gasket, Crankcase Main Stud.
            R&D: Aquavein Intake Grate, PPK.
            WORX: Sponsons.

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            • #7
              Originally posted by Waterholics
              I just wanna get some stuff straight her.
              Now I'm fairly new to the PWC world and I know with my mods I am no where near these speeds. So my question is how much MPH off should I be if I ride in 93* saltwater in closed course trim ???
              with hot weather and a closed course set up you can easly deduct 3-5 mph off these max speed numbers.
              The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

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              • #8
                So 300 psi of boost makes your yamaha into a kawi with wings? That is a good mod!

                Sean
                The older I get, the more I find myself fixing things that I knew I was doing correctly at the time.‚Äč

                Ski not running well? Check HERE!

                1987 JS550 - JankyStandup
                2004 STX NAsty15f

                2004 STX-RXT-X Conversion
                2001 Toyota Tundra Basketcase

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                • #9
                  Looking back at all my notes over the years of pwc info 80 mph was the magical speed everyone was trying to reach with a modded gpr. Now 80 mph on a sho/fz is a good baseline to start from . Amazing how the speeds have gained in just the past 2-3 years. Tommy Jordan
                  The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

                  Comment


                  • #10
                    ttt
                    The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

                    Comment


                    • #11
                      Originally posted by 2fast4u
                      ttt
                      Hey Tommy just wanted to know if saltwater makes a difference from freshwater in speed.
                      2009 FZR:
                      RIVA: Power Filter, Rear Exhaust, Intake Manifold Upgrade, E1, Power Cooler Kit, TiAL 50mm BOV, FPR, Vi-PEC ECU, Engine Cooling Upgrade, Engine Breather Upgrade, 160mm pitched by JIM'S PERFORMANCE, Stainless Steel Wear Ring, 160mm Race Pump, Performance Ride Plate, Reduction Nozzle, 86mm nozzle, Valve Train Upgrade, 3 Bar MAP Sensor, 1000cc Injectors, Pro-Series Cylinder Head Stud, Pro-Series Cylinder Head Gasket, Crankcase Main Stud.
                      R&D: Aquavein Intake Grate, PPK.
                      WORX: Sponsons.

                      Comment


                      • #12
                        Originally posted by Waterholics
                        Hey Tommy just wanted to know if saltwater makes a difference from freshwater in speed.
                        with all my testing on the Fountain race boats the salt water apears to produce a little less speed .5 to 1.5 mph slower than brackish or fresh water. A second thing I have found is that the humidity most of the time is always higher along the coast where salt water is which makes the engine produce a little less HP also , Tommy Jordan
                        The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

                        Comment


                        • #13
                          Originally posted by 2fast4u
                          with all my testing on the Fountain race boats the salt water apears to produce a little less speed .5 to 1mph slower than brackish or fresh water. Tommy Jordan
                          Tommy I agree, we have this hook, curve near the bay entrance that is salt/brackish and the speeds seem the highest for no other apparent reason... maybe some kind of under current, don`t know...

                          Comment


                          • #14
                            bumping this back up to the top for the new guys
                            The Fountain Boys "Never ride faster than your angel can fly" The R&D never stops! " A friend will get you out of jail, A GOOD friend will be sitting in jail with you saying " boy that was fun"

                            Comment


                            • #15
                              Originally posted by 2fast4u
                              After working on several Fzr/Fzs This is what I have came up with as far as BEST speed numbers. These speed numbers are based on IF you have air intake, exhaust, rideplate, water intake grate,prop/nozzle, ecm reflash or aftermarket ecm and all the normal things everybody does plus your ski is tuned correctly you are testing in good water conditions and running the ski as free as possible also............ stock sc wheel and no reflash= 73-74 mph add a reflash or aftermarket ecm 7-9 psi of boost= 76-79 mph, 10-12 psi of boost= 80-82 mph, 13-15 psi of boost= 83-85 mph, 16-18 psi of boost= 86-88 mph and over 18 psi of boost 89 mph and up depending on how much boost you can get. This is just what I have seen. Head porting , cam gears and camshafts can give you a even better speed at these boost numbers also. I know some of you are not getting these speed numbers but if everything is done correctly you should be close to these speeds. If you are running these speed numbers or better with that amount of boost then you have done a good job on your ski! If not you need to look and see where you are not getting the best out of your ski. These speed numbers will be less in hot and humid weather also. If you choose to run your ski tighter to the water your ski will be slower. Feel free to respond to this post if you like. Tommy Jordan
                              Hi Tommy how does bodyweight affect top speed?

                              Comment

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