Results 1 to 7 of 7
  1. #1

    What's considered good compression on ultra 150?

    I'm lookin at a 2005 with 45 hours on it tomorrow and can't remember what a good compression reading would be.

    Many thanks

    David


  2. #2
    pokechop2006's Avatar
    Join Date
    Jun 2009
    Location
    summerville sc
    Posts
    223
    im thinking 120 across the top as long as its with in 10 of each other you should be ok.with a bump of compression like i have is 140.

  3. #3
    110-130 on a stock compression ski.

  4. #4
    Does a weaker battery affect compression readings?

    Should I remove all three plugs first, and then test compression or remove one plug at a time test that cylender and reinstall plug then move to the nextcylender?

    Thanks guys!

  5. #5
    I'd rather be jet skiing Saltwater n Premix's Avatar
    Join Date
    Jul 2010
    Location
    Fort Worth, TX
    Posts
    514
    +1
    47
    Yes. You need a full charged good condition battery for accurate results. Crank with WOT. Remove one plug at a time.

  6. #6
    steve45's Avatar
    Join Date
    Feb 2008
    Location
    Texas
    Posts
    5,009
    +1
    283
    Higher elevations will lower compression, too.

  7. #7
    SJ-(KY)'s Avatar
    Join Date
    Jul 2007
    Location
    Forest Hills,KY
    Posts
    278
    +1
    4
    150lbs compression with 160-165 squish is where its at on stock pistons ... That area is good for big smiles..lol... But to a serious not 120-125 are excellent compression #'s for a stocker with stock heads.... If it starts getting under 105lbs I'd re-ring it for my taste...

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Replies: 2
    Last Post: 07-18-2013, 01:19 PM
  2. whats good compression on a wave jammer?
    By Joe Stang in forum Yamaha Old School Skis
    Replies: 6
    Last Post: 05-17-2010, 10:18 PM
  3. tps on ultra 150
    By hydrojunkie in forum Kawasaki PWC Performance (2-stroke)
    Replies: 2
    Last Post: 08-19-2007, 10:34 PM
  4. what do u guys think----kaw ultra 150-80 mph
    By william in forum Videos & Pictures
    Replies: 10
    Last Post: 07-23-2007, 08:36 PM
  5. Need Help with Cooling on Ultra 150
    By thesepaperwings in forum Kawasaki How To & FAQs
    Replies: 1
    Last Post: 07-17-2007, 09:45 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
  •