Thread: Riva pump extention
12-19-2008, 07:55 PM #1
Riva pump extention
Has anyone with the pump extention on their X had any bucking problem after the upgrade?
12-19-2008, 08:02 PM #2
The pump extention was not designed for this problem and will not do anything to help the issue
12-19-2008, 08:13 PM #3
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...................
12-19-2008, 08:13 PM #4
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...
12-19-2008, 08:29 PM #5
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+
12-19-2008, 08:50 PM #6
12-19-2008, 08:58 PM #7
- Join Date
- Jul 2005
- Lake Dunlap, Texas
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.
12-19-2008, 09:06 PM #8
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.
12-19-2008, 09:51 PM #9
12-19-2008, 10:09 PM #10
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By palmbeach jesse in forum 4-Tec PerformanceReplies: 10Last Post: 04-10-2009, 08:30 PM
By qatar2000kk in forum 4-Tec PerformanceReplies: 51Last Post: 01-07-2009, 09:46 PM
By Sandy in forum Sea Doo Open DiscussionReplies: 7Last Post: 04-24-2007, 01:50 PM
By catchme in forum 4-Tec PerformanceReplies: 22Last Post: 02-03-2007, 09:56 AM
By majundecid in forum 4-Tec PerformanceReplies: 6Last Post: 07-08-2006, 06:52 PM