Page 1 of 5 1 2 3 ... LastLast
Results 1 to 10 of 42
  1. #1
    TheXrider's Avatar
    Join Date
    Dec 2007
    Location
    Miami, Florida, United States
    Posts
    305

    Riva pump extention

    Has anyone with the pump extention on their X had any bucking problem after the upgrade?


  2. #2
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
    Join Date
    Aug 2007
    Location
    Tampa Bay, FL
    Posts
    9,202
    +1
    673
    The pump extention was not designed for this problem and will not do anything to help the issue

  3. #3
    It's not the destination, it's the journey!! Rip'nTear SHO's Avatar
    Join Date
    Apr 2008
    Location
    Ft. Lauderdale
    Posts
    4,573
    drill the holes and call it a day........it amazes me how people 'wanna dance with the devil in the pale moonlight' and push their luck with a hull known to overstuff.......

    totally not worth the injury of coming off ur ski at 75+ mph.....


    drill the holes...................

  4. #4
    FIRED!!! JP's Avatar
    Join Date
    Dec 2006
    Location
    Fort Lauderdale, FLORIDA baby...
    Posts
    3,505
    I'm thinking that it may make it worse...

    The problem with the RXP-X setup is that it was designed to push more water into the pump for acceleration. When folks start trying to make the RXP-X go faster, it causes what's referred in this group as an OVERSTUFF. Folks with a Hydraulics (or in my case Firefighting) background, it's referred to as a Water-Hammer. Water does not compress so when you try, it will just stop flowing...

    So here's my fear: by adding the extention, you are giving it more space before it OVERSTUFFS or (Water-Hammers). This means you'll get to more speed, and think you're fine then BOOM, you're gonna skip like a rock...

    JP

  5. #5
    TheXrider's Avatar
    Join Date
    Dec 2007
    Location
    Miami, Florida, United States
    Posts
    305
    Wow so there is really no fix to this issue is just a matter of luck and time before you plunge. Riva says it doesn't cure it but it extends the speed bracket so I guess my best bet is to get an R&D grate drill the holes get the pump extention and pray oh I have every possible mod from Riva for my ski I'm just activating the ecu and getting the pump extention soon so i'm freaking out cause I know i'm going to want to top it out and with these mods I should be around 83+

  6. #6
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
    Join Date
    Aug 2007
    Location
    Tampa Bay, FL
    Posts
    9,202
    +1
    673
    Quote Originally Posted by Xrider69 View Post
    Wow so there is really no fix to this issue is just a matter of luck and time before you plunge. Riva says it doesn't cure it but it extends the speed bracket so I guess my best bet is to get an R&D grate drill the holes get the pump extention and pray oh I have every possible mod from Riva for my ski I'm just activating the ecu and getting the pump extention soon so i'm freaking out cause I know i'm going to want to top it out and with these mods I should be around 83+
    Or get rid of it and buy a 215 RXP... If you want to go really fast How fast are you running your X

  7. #7

    Join Date
    Jul 2005
    Location
    Lake Dunlap, Texas
    Posts
    1,600
    +1
    28
    Xrider69--It would take sooo much more horsepower to get a RXPX to 83mph than a regular RXP. THERE IS NO CURE FOR OVERSTUFFING/BUCKING ON THE RXPX AS OF NOW.
    You will be flirting with very serious injury or worse. I had a RXPX from new and sold it--bought me a RXP. If you want to go over 75 mph with no issues--I urge you to do the same.

  8. #8
    beachbum0286's Avatar
    Join Date
    Sep 2007
    Location
    Brigantine NJ
    Posts
    944
    +1
    1
    It has been said before you need to be able to process the water at higher speeds. Easiest way to do so is do add aftermarket ECU that will bump your RPM's so you can process more water. I have done 80 on an X with no problems and I know other people have gone 83 on an X.

  9. #9
    FIRED!!! JP's Avatar
    Join Date
    Dec 2006
    Location
    Fort Lauderdale, FLORIDA baby...
    Posts
    3,505
    Quote Originally Posted by beachbum0286 View Post
    It has been said before you need to be able to process the water at higher speeds. Easiest way to do so is do add aftermarket ECU that will bump your RPM's so you can process more water. I have done 80 on an X with no problems and I know other people have gone 83 on an X.
    just don't slip of the throttle, and have that prop slow the flow...
    cause you better have a BIG S on your chest, you're gonna FLYYYYY...

    JP

  10. #10
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
    Join Date
    Aug 2007
    Location
    Tampa Bay, FL
    Posts
    9,202
    +1
    673
    Quote Originally Posted by JP View Post
    just don't slip of the throttle, and have that prop slow the flow...
    cause you better have a BIG S on your chest, you're gonna FLYYYYY...

    JP
    +1... If your lucky you will fly... most get stuffed into the bars first This is nothing to play with... it WILL happen sooner or later if you ask for it

Page 1 of 5 1 2 3 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Riva Pump Extention Info
    By palmbeach jesse in forum 4-Tec Performance
    Replies: 10
    Last Post: 04-10-2009, 08:30 PM
  2. MY IMPRESSION ON THE New RIVA PUMP EXTENTION
    By qatar2000kk in forum 4-Tec Performance
    Replies: 51
    Last Post: 01-07-2009, 09:46 PM
  3. Riva VTS extention rod for RXP?
    By Sandy in forum Sea Doo Open Discussion
    Replies: 7
    Last Post: 04-24-2007, 01:50 PM
  4. concerned about Riva pump wedge
    By catchme in forum 4-Tec Performance
    Replies: 22
    Last Post: 02-03-2007, 09:56 AM
  5. Bought RIVA Pump wedge...Missing spacer!! And need directions
    By majundecid in forum 4-Tec Performance
    Replies: 6
    Last Post: 07-08-2006, 06:52 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •