11-15-2010, 12:01 AM #1
New top speed with just a little tweaking!!!
My previous top speed with the following mods was 77.8mph
TDR water box
Ajustable nozzle with 80mm ring
Adjustable trim rod (set with trim way to high)
Riva intake grate
R&D Steering nozzle
I made these few changes
RE block offs
Adjusted the trim nozzle about a 1/2 inch
installed flow rite (I was amazed at how much heat they let out of the hull
I also added 2 holes in the grab bar to try and get a little more air to the charger.
And got a new top speed of 79.1 at 8180rpm
I am still amazed at the gains with a little tweaking. With the trim rod adjusted the ski now launches out of the hole with now cavitation runs the fastest top speed trimmed all the way up. We made 4 runs with about 3 bars of fuel.
I can't wait to see how the ski will run once i break down and change the dam stock intercooler
I would like to give a special thanks to GREENHULK and Ksalles for all the help.
11-15-2010, 04:58 AM #2
- Join Date
- Nov 2009
nice work mate i gotta get my tuning down aye i got similar mods to you but a few more revs and im not up that high on speeds ha
11-15-2010, 05:01 AM #3
- Join Date
- Sep 2009
- Aussie Land
What RPMS did you gain from your 77 speed?
Well done BTW.
11-15-2010, 08:15 AM #4
11-15-2010, 08:40 AM #5
I've always said a little attention to detail goes a long way when it comes to performance. Last time Josh (BAYOU RXP) came here all the ski would run is 77.?mph. I say all it would run, but thats really good considering whats done to it. After riding it, I knew it had potential to go faster. The ski just didn't feel right and would cavitate horribly out the hole and was extremely tipsy at top speed. I've played with my rod a good bit ,so I had a really good idea where a good starting point was for his. Sure enough, the first guess was spot on. His ski now rockets out of the water with zero cavitation, and the highest top speed is achieved with the trim all the way up. No guesssing or constantly fiddling where to set the trim etc when riding now. Needless to say he's stoked, I can't blame him. The ski made a few 79.0 runs as well, so the 79.1 isn't a fluke. Sitting straight up on the seat the ski runs solid mid 76mph.
After riding his ski with the trim set correctly and the RE block off, I can't wait to get mine in and installed. I even think I'll have to get an exhaust now that I've ridden his a couple times with it. The completely stock sound with resonator and all is getting old.
A big thanks to this site and all its members and the GREENHULK Performance Store for hooking us up with the right parts to do the job.
I'll keep the updates coming with my ski as well, I'm determined to knock on 80mph with my stock X charger, stock ecu ski with all these bolts ons from the site store. I was going to say stock exhaust, but can't promise how much longer that will be on there. lol At least one more crack at it when the RE's come in...after that only time will tell how long I can stand being quiet.
11-15-2010, 09:35 AM #6
11-15-2010, 09:47 AM #7
11-15-2010, 09:56 AM #8
11-15-2010, 11:08 AM #9
11-15-2010, 11:12 AM #10
With the o.p.a.s. on my ski, it basically ran the same mph last time out without the porpoising at the top end. This time it was on its way to going faster, it actually did with alot of fuel in the heat (79.0mph) but it started bouncing. ( I posted the video in the other topic) I should have left the o.p.a.s and done just the nozzle, but I did both at once. No turning back now, I think with the RE block off ons I should pick up mph being I can hold it to top end without bouncing. Especially in some cool temps, weather was sh*t when it went 79.0. Yesterday was alot better conditions, but it still would have bounced with the cheap block off plates, so I am waiting to try it with the RE's in better air before I do anything else. Thanks as always for your help and input. Following your ski on here is actually what got me starting to mod mine.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By divin10 in forum 4-Tec PerformanceReplies: 10Last Post: 03-25-2008, 09:13 AM
By MIARider in forum 4-Tec PerformanceReplies: 23Last Post: 08-10-2007, 10:14 PM
By Dark_viper42 in forum Sea Doo Open DiscussionReplies: 2Last Post: 06-15-2007, 01:21 PM
By wavehummer in forum 4-Tec PerformanceReplies: 5Last Post: 06-10-2007, 10:30 PM
By thunder-d rxp in forum 4-Tec PerformanceReplies: 2Last Post: 05-30-2005, 11:13 PM