Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11
  1. #1

    need advice on fuel for 260X on 15psi

    guys need some advice here

    i've got an 2009 ultra 260X
    Riva intake, Riva Exhaust, Riva Intake Grate

    blocked off bov on intercooler
    installed smaller pulley (custom made one, smaller than stock)
    installed R&D fuel regulator and walbro fuel pump

    tried it today and got these figures:
    ski is running at 14-15psi on water
    fuel pressure is set at 41psi
    RPM is at 8400 on water

    i didnt use a GPS today, but tomorrow i will try one

    i don't have access to a wideband
    can you recommend a fuel pressure that would be safe?
    and should i stick with the stock injectors?

    any other stuff i should look at?
    i use it in choppy waters too but i'm being careful at WOT


  2. #2
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    Location
    Brisvegas
    Posts
    4,157
    +1
    598
    at least 45psi is a safe place to start if I were u
    mine with 1-1, 9.5,Timing and other stuff runs 11.8 at WOT on 44 at 8450+

    Waz

  3. #3
    Quote Originally Posted by drift View Post
    ski is running at 14-15psi on water
    That's quite impressive.
    Just be careful not to run at that high boost too long. The Ogura s/c rotors have rubber like coating and it peels off when pressure/temperature gets too high. As you may know the coating keeps the critical clearance between two rotors, and once it peels off the s/c can't build up the boost as usual and there is no way to recoat the rotors (as far as I know).

  4. #4
    what sort of top speed should i expect from this?

    i havent tried a GPS yet

  5. #5
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,794
    +1
    625
    mine done 117kmh then went bang the first time now it varies around 112kmh, but its setup is for rough water, the gain is more on the bottom end.

  6. #6
    ^ thats about 69.5MPH

    i need to run a seadoo RXT255 thats doing about 73mph, on a very short run, maybe less than 1/8th mile

    what should i do?

    to get closer to 72mph or faster

    my ski pulls very hard on top, but i would like it to be faster from start

  7. #7
    nicjak's Avatar
    Join Date
    Mar 2008
    Location
    Warragul, Downunder
    Posts
    7,794
    +1
    625
    well thats what i said it will pull from down low

  8. #8
    Banned User
    Join Date
    Jan 2009
    Location
    LA/oc
    Posts
    3,911
    +1
    129
    trade it in by a 300 it will becheaper lol

  9. #9
    Banned User
    Join Date
    Apr 2011
    Location
    Miami, FL
    Posts
    244
    Quote Originally Posted by FIRE0021 View Post
    trade it in by a 300 it will becheaper lol
    oh yea i love the big pull off the dig from the 300x crazy

  10. #10
    the wotman likes boobs wotman's Avatar
    Join Date
    Mar 2009
    Location
    Australia
    Posts
    1,069
    +1
    48
    Quote Originally Posted by drift View Post
    ^ thats about 69.5MPH

    i need to run a seadoo RXT255 thats doing about 73mph, on a very short run, maybe less than 1/8th mile

    what should i do?

    to get closer to 72mph or faster

    my ski pulls very hard on top, but i would like it to be faster from start
    with those revs and boost you will be past 72mph already.
    Have you got a riva plate?

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Need advice on fuel pump for rxp
    By Jeff C in forum 4-Tec Performance
    Replies: 24
    Last Post: 09-20-2014, 12:26 PM
  2. NEED ADVICE on which Jet Ski to buy for the Family !
    By joeman in forum Yamaha Open Discussion
    Replies: 14
    Last Post: 03-07-2010, 08:44 PM
  3. need advice on pump combo for a 2000 gp1200r
    By jeepsrdreaming in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 11-05-2009, 10:55 PM
  4. i need advice on a macro lens for my camera
    By Green Hulk in forum Open Discussion
    Replies: 51
    Last Post: 11-12-2008, 02:10 PM
  5. Need advice on mild mods for 04 RXP
    By dave911rsr in forum 4-Tec Performance
    Replies: 6
    Last Post: 03-02-2008, 09:19 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
  •