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RIVA Performance Forums RIVA Performance Forums Kawasaki PWC Performance Forum How about some NON-SC mods for the 12F and 15F|
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Ray, good luck with your ski. Please keep us informed as you make gains or even losses so the rest of us can know what works and what doesn't.
I weigh the same as you so our results could be very similiar when and if I decide to buy a 15F. We are for sure on the same page with each other for the end result....RIP YOUR ARMS OUT OF THE SOCKET ACCELERATION AND A SOLID 67MPH I use to tell James Crone when he was asking me questions about my ski and what types of results I was looking for.... I use to tell him that i want if anyone rides my ski that is not familiar with it, I want them to basically almost fall off if they try to just slam full throttle like they would do on some piece of crap rental ski.  Thanks again. Curtis -- CUE |
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quote: Bro, what year is your STX-R? did you tested the boat before and after the mods? if you did, what did you gain the most after the mods, more top end speed or just more acceleration? What type of mods from PE you did to the boat? sorry for all the questions my friend, but for just looking at your boat top end speed (63mph) it seems to me that you have a rough water set-up intead of a smooth water one but I might be wrong, can you give me some input about this?, thanks, Ray |
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Ray, you are correct. I do have a rough water ski. It stays glued to the water. My boat stock was 61.2 mph with great holeshot. My boat now is actually 63.8 mph with awesome low end/mid-range pull on pretty much a full tank of gas.
My ski is a 2002. It has pretty much everything that a PE "light" limited boat has on it. I also have an adjust a thrust. I have played with the nozzles etc and have been able to squeeze out another 1-1.5 mph out of the ski but I loose low end capabilities when I adjust it. So the combo I have is great in my opinion. I would like a little more top end but I think that will involve switching out props and maybe exit nozzles etc. So instead of doing that I plan on starting again with a new ski and letting the girlfriend have the STXR. Thanks. This message has been edited. Last edited by: cue03, -- CUE |
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Here is everything that is done to my ski...
ADA Heads PE Dominator D1 exhaust porting PE Modified Waterbox PE Dual engine cooling line upgrade PE Modified Waterpipe for dual cooling PE Water restrictor mod PE "blueprinted" Skat-Trak 13/21 PE +3mm exit nozzle PE Extended turn nozzle PE Modified R&D plate PE Modified OE intake grate PE Modified/rejetted carbs Beach house sponsons Adjust a thrust (using 2 inch shuttle w/ spacer) Tau Ceti Flame Arrestors Tiny Tach Aftermarket bars and grips. What do you think?... if there is something I should change or alter than would give me more top end without loosing the bottom, please let me know. I, like you, weigh in at about 146lbs. Like I said in the previous post, I am sure I can change the prop, exit nozzle and remove the adjust a thrust and gain maybe 3-4 mph. Not sure how it will run on the low end however. Am I wrong? Now that I look at the list, I realize that is a sh*tload of stuff on there. Oh well. I didn't do allot of testing of each part because I got everything done at once. Thanks Curtis -- CUE |
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How about some NON-SC mods for the 12F and 15F ??
Naples, FL 2003 STX 12F 320 Hours...... Traded in for 2007 Ultra 250X 28 hours and going up fast !! |
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[QUOTE]Originally posted by cue03:
Here is everything that is done to my ski... ADA Heads PE Dominator D1 exhaust porting PE Modified Waterbox PE Dual engine cooling line upgrade PE Modified Waterpipe for dual cooling PE Water restrictor mod PE "blueprinted" Skat-Trak 13/21 PE +3mm exit nozzle PE Extended turn nozzle PE Modified R&D plate PE Modified OE intake grate PE Modified/rejetted carbs Beach house sponsons Adjust a thrust (using 2 inch shuttle w/ spacer) Tau Ceti Flame Arrestors Tiny Tach aftermarket bars and grip Like I said in the previous post, I am sure I can change the prop, exit nozzle and remove the adjust a thrust and gain maybe 3-4 mph. Not sure how it will run on the low end however. Am I wrong? NO, YOU ARE NOT WRONG!!!! WHAO!!! bro, you got a bunch of stuff in there, now I am a little worried about if I can reach at least 65 mph on my boat.....  It looks like it is NOT so easy to gain top end speed on this hulls....well taking a close look at your boat mods the only aftermarket parts that in my opinion might be hurting your boat top end speed a little is the PE +3mm exit nozzle, the aftermarket adjust a Thrust shuttle, and maybe the skat prop, that are well known to increase rough water hook-up and acceleration BUT everybody knows that they are not the speed king in the top end, that place belongs to the solas concord prop, but definitely, you are goin to lose some bottom end punch if you remove them from your boat but how much? I really don't know. Ray |
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Ray, I ride with one that does 66 to 67 with heads, filter, ride plate and prop. It still has that AWESOME hole shot.
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Ray don't worry we can do it! 65 should be no problem.
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quote: Phil, I am with you on this  I received a mail a while back from board member Ken, (yamaha 7) from Florida that back up your claim, in that mail he said to me that his Kawi 15F boat was doing 65.7 mph on the radar gun with the Farthing package, if he was reaching this speed with a "out of the box" R&D ride plate the aftermarket R&D top louder intake grate that is well known to scrub at least 1 full mph on the top end on all this STX-R and 15F hulls and with his "out of the box" skat-trak 13/19 swirl prop, then I don't know why I can't do 66 or 67 mph with my stock oem modified intake grate, my PE modified "angle moded" R&D plate and with my "blueprinted and balanced" PE skat-trak prop.This message has been edited. Last edited by: Gpr/STX-15F/RXT, |
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quote: mtrager, i am curious to know what prop is using this guy in this moded 67 mph boat, thanks, Ray |
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I too would like to know more about that 66-67 mph. Prop specs would be nice. I may give it a try and remove the AAT and put back on the stock nozzle and turn nozzle with this "special" prop....whatever it maybe.
Thanks. -- CUE |
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Hey Ray I ride with Ken alot. I had a Sea-doo GTX 4-tes SC and he had his mod. 15F and we raced in the chop which I thoght I was going to kick his butt but that wasn't the case. The 15F was very impressive so I bought one. The day we raced there was also a 1300R with us and in the chop we would lose him but in the flat he would slowly creep by. The 1300R was not stock either. It was a good day for Kawi!
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Ray, it is a 15/25. Last time I rode with him it ran 66.2 with bucket out and a full tank of gas. Which does not seem to slow a stxr down much. His name is Brusso. If you want more info on the prop call Carl. In addition to his we have another stxr which is stock that we added R@D ride plate to and picked up 1.5mph. That boat went 62.5 to 62.8 stock in good air. And runs between 64 and a best of 64.7. Hope that helps.
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[QUOTE]Originally posted by mtrager:
Ray, it is a 15/25. Last time I rode with him it ran 66.2 with bucket out and a full tank of gas. Which does not seem to slow a stxr down much. His name is Brusso. If you want more info on the prop call Carl. In addition to his we have another stxr which is stock that we added R@D ride plate to and picked up 1.5mph. That boat went 62.5 to 62.8 stock in good air. And runs between 64 and a best of 64.7. Hope that helps.[QUOTE] Thanks for the info bro, now I am really  . Ok gentlemans, lets compare some specs. between the 04' 2 stroke STX-R vs the 04' 4 stroke 15F. Engine displacement: 4 stroke 15F.........1498cc 2 stroke STX-R.......1176cc horsepower: 15F...................160 STX-R..................145 compresion Ratio (corrected): 15F...................10.6:1 STX-R.................5.8:1 Dry weight: 15F....................743lbs. STX-R..................639lbs Now, the one million dollar question: if you take a close look at the chart you would see that the 15F have more horsepower, more compression and more engine displacement than the STX-R BUT at the same time is a wooping!!!104 pounds heavier than the R, also this two boats in stock form share almost the same acceleration and top end speed numbers, so taking all this facts in consideration, do you guys think that this custom prop should be a little to tall for a 15F with the stock comp. and only a K&N high flow F/A mod? what are you thoughts? thanks Ray p.s. mtrager, what brand is this custom prop, a skat or a solas concord? I am also very curious to know how this 66 to 67 mph STX-R moded boat perform from a dead stop against the RXP from your riding area (that you mentioned in another thread), i just want to compare this boat holeshot vs mine, since I grudge raced them very often we have (8) of them in my riding area. This message has been edited. Last edited by: Gpr/STX-15F/RXT, |
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quote: Curtis, i really think that this custom 15/25 prop would do wonders in your boat since you have a aftermarket PE +3mm nozzle that can compensate for any low end punch loss, if I were you, I WOULD GO FOR IT!!! |
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quote: Phil, this is what most of this moded stage I and stage II Gpr's onwers can't understand, in open waters high surf conditions any of these 3 seaters boats with their huge size and weight and incredible rough water hook-up can disappear in a minute from a heavily moded 70mph plus 2 seater boat any time, in fact the only 2 seater boat currently on the market that can stay neck and neck with any of this 3 seaters boats on high surf waters conditions is the Sea Doo RXP, but if you take a close look at this boat specs. this hull share almost the same size and weight of a 3 seater boat. This message has been edited. Last edited by: Gpr/STX-15F/RXT, |
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quote: So you are saying, leave everything as it is and run this prop on my ski.... with the +3mm exit nozzle and the extended turn nozzle? What about the AAT...should I remove that? I may very well give this a try. I would like to know who makes the prop and where they got it from. Thanks. Curtis -- CUE |
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quote: I seems to me that we need to figure out a way to do the most get the 15F to lose 50 lbs.... maybe a carbon fiber racing seat, carbon fiber front hood, remove the front bucket, remove some unnecessary bits on the inside, remove reverse and the mechanics for reverse, remove the assisted steering stuff, etc. Won't that drop some lbs and give you a nice speed increase? Maybe I am crazy. If it cost way to much to get the power to make up for the weight, then less find a way to reduce the weight to indirectly increase the power. Thanks -- CUE |
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