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

    Join Date
    Aug 2006
    Location
    Gonzales, La
    Posts
    2,145
    +1
    9

    Measured improvment from wear ring replacement.

    Just thought everyone would be curious. I couldn't find where anyone else had posted this, so here goes. . .

    Old wear ring clearance: .030"
    Sea-doo spec max: .014"
    New wear ring clearance: .006"

    Old top speed: 64.7 mph almost out of gas.
    New top speed: 65.5 mph with 6 bars of gas.

    The engine rpm (7900 rpm) did not change at all with the new wear ring. The acceleration difference is huge, though.

    Mike


  2. #2

    Join Date
    Jul 2006
    Location
    Dallas
    Posts
    84
    Mike,

    I would try one of those stainless steel wear rings nest time you change one out especially if you are making alot of high speed runs.

  3. #3
    captain obvious Lurker's Avatar
    Join Date
    Jul 2005
    Location
    Visalia, Ca
    Posts
    2,316
    I had clearance of .014. When I replaced with a new wear ring my rpm came back up from 7700 to 8150

  4. #4

    Join Date
    Aug 2006
    Location
    Gonzales, La
    Posts
    2,145
    +1
    9
    Lurker, that's strange. I went from .030 down to .006 and saw maybe 50 rpm difference. You went from .014 down to .006 and saw 450 rpm. Hmmm. . .

  5. #5
    captain obvious Lurker's Avatar
    Join Date
    Jul 2005
    Location
    Visalia, Ca
    Posts
    2,316
    I did have some deep gouges that I couldn't measure, so they may have been the main source of my problem.

  6. #6

    Join Date
    Jun 2005
    Location
    Hamilton, Ontario, Canada
    Posts
    556
    i had similar results where my RPM's did not change after replacing the wear ring, however speed and acceleration definitely did. Gained roughly 1 mph with the new wear ring, but my RPM's basically remained unchanged (+50-100rpm max).

  7. #7

    Join Date
    Aug 2006
    Location
    Gonzales, La
    Posts
    2,145
    +1
    9
    North49, how fast is your ski before and after mod's? I'm asking because just yesterday, I removed the nose cone, filled the rideplate holes, and trimmed the reverse bucket. Other than that, my ski is totally stock and I'm trying to figure out what to expect.

    Mike

  8. #8
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    Mike, you should see a 1.5 mph improvement

  9. #9

    Join Date
    Aug 2006
    Location
    Gonzales, La
    Posts
    2,145
    +1
    9
    Quote Originally Posted by Green Hulk
    Mike, you should see a 1.5 mph improvement
    Great, so mine with free mod's will run what everyone else's run stock. . .

    66.3 + 1.5 = 67.8

  10. #10
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Location
    Morgan City, LA
    Posts
    36,398
    +1
    2,524
    Mike, if you get your RPM's up to 8100 you should gain nearly 2 mph from that alone.

    Make sure your impeller is true (all blades equal) and maybe even take 1 mm pitch out of the trailing edge. I would be glad to help you with this if you like.

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. wear ring replacement
    By skooter525 in forum 2-Stroke Performance
    Replies: 6
    Last Post: 08-15-2009, 12:18 PM
  2. trouble separating stator pump from wear ring
    By chrismc in forum Polaris Open Discussion
    Replies: 7
    Last Post: 05-13-2009, 07:22 PM
  3. Wear ring replacement
    By J Duff in forum 4-Tec Performance
    Replies: 2
    Last Post: 05-01-2007, 12:19 PM
  4. RXP wear ring replacement
    By driveumhard in forum 4-Tec Performance
    Replies: 1
    Last Post: 03-17-2007, 10:45 AM
  5. Wear Ring Replacement
    By sc6365779 in forum 4-Tec Performance
    Replies: 7
    Last Post: 08-22-2006, 11:39 AM

Posting Permissions

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