Results 1 to 8 of 8
  1. #1

    Cool XP Limited D-Day

    Well, My 98 XP Limited 951 rebuild is complete and installed. PITA! A couple questions before starting her up. When installing the head pipe, a bit of loctite seaped out at the flange and onto the gasket while I was screwing down the three hex bolts..is this ok? Second, How critical is loctite on the carb bolts? I didn't apply any, but made sure they were tight. I converted to premix and getting ready for the break in process now. I have heard of two different ways to break it in and not sure which to use.

    Using mineral oil both ways-32:1 premix

    The first process I read is to ride in half hour increments giving 20% throttle, then 50%, then 90% - varying the throttle at all times and letting ski cool down completely between sessions.

    The second way I heard was to do heat cycles- 10x 1 minute without hose-very low idle and rich fuel mixture, giving atleast 45 minutes of cool down between cycles, then 1 or 2 10 minute cycles on the hose, and then 2 more 20 minute cycles in the water(one at trailer and one riding)

    The second one seems sketchy..any thoughts? I also read somewhere deep in the forums that if you premix it's ok to use synthetic for the break in/oil bath but if injecting then use mineral.

    Any advice, questions, concerns would be greatly appreciated. I put A LOT of time, effort and money into this build and I want to make sure it runs the way it should.


  2. #2
    I just coated the piston, walls and rings with mineral oil. Took it out and was pulling tubers within 1/2 hour. 112 hours later, compression is still 145 and max RPMS is 6,840.

  3. #3
    Update:

    Launched it Saturday..things went pretty smooth. I had a little to much tension in the throttle cable which gave a high idle..Backed that off and adjusted idle screw and its all good. Sometimes when getting on plane, the boat will hesitate a little. I am pumping the throttle a bit for the break in, but I'm not sure if it's rich or lean down low. I was also low a fuel..maybe the baffle was in and out of gas and was leaning out that way? Any thoughts?

    Also happens mostly after extended idling (warm up and no wake zones)

  4. #4
    Where are all the gurus? Bump

  5. #5
    20 feet Boy's Avatar
    Join Date
    Jul 2010
    Location
    Bend OR
    Posts
    1,257
    +1
    1
    If you are using mineral 2 stroke oil on a 951 motor I don't think it getting the proper lube. You should be using something with higher protection. Just my thoughts.

  6. #6
    That was for the break in period only. I ended up using synthetic anyway. Any thoughts on the issues down low?

  7. #7
    20 feet Boy's Avatar
    Join Date
    Jul 2010
    Location
    Bend OR
    Posts
    1,257
    +1
    1
    Carbs are in sink. maybe ones not opening at the sometime. Making it stall a bit. When you rebuilt it were the reeds gaping off the cage a little or were they nice and tight on the reed cage. That may be doing it too. Or it might be something Else.

  8. #8
    The reeds made a nice seal. Carbon-tech SS. I did bring out the low speed 1/4 turn from factory. It was just about to run away on the trailer so I fattened it a little. I think it may be loading up after extended idle.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Whats the correct premixing ratio for a 1999 XP Limited???
    By xtito25x in forum 2-Stroke Performance
    Replies: 16
    Last Post: 07-11-2017, 08:23 PM
  2. 2001 Sea Doo XP Limited , 2006 2-Place
    By Secondlook in forum Sea Doo Classifieds
    Replies: 0
    Last Post: 04-24-2008, 09:22 AM
  3. 1998 xp limited
    By jackmonster1 in forum Sea Doo Open Discussion
    Replies: 5
    Last Post: 02-15-2008, 12:00 AM
  4. '99 XP limited questions
    By Tony in forum Sea Doo Open Discussion
    Replies: 5
    Last Post: 12-31-2007, 06:31 PM
  5. 98 seadoo xp limited
    By akae6360 in forum 2-Stroke Performance
    Replies: 8
    Last Post: 11-08-2007, 07:15 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
  •