Page 1 of 2 1 2 LastLast
Results 1 to 10 of 13
  1. #1
    Tony's Avatar
    Join Date
    May 2007
    Location
    North Carolina
    Posts
    1,760
    +1
    38

    Crank seal question SLT780

    Can the crank seals be replaced without splitting the cases?
    Can it be done with the engine still in the ski?

    Anybody want to trade my Cylmer 92-95 manual for a "96 up manual so I can stop asking so many dumb questions?


  2. #2
    cheatin' piston popper addicted's Avatar
    Join Date
    Jul 2006
    Location
    north jersey
    Posts
    6,188
    +1
    176
    no.
    no.
    absolutely not!

  3. #3
    Tony's Avatar
    Join Date
    May 2007
    Location
    North Carolina
    Posts
    1,760
    +1
    38
    Quote Originally Posted by addicted View Post
    no. DAMN
    no.DAMN
    absolutely not! Double DAMN
    Hope my seals are good!

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Location
    Cleveland OH
    Posts
    17,330
    +1
    31
    Don't hope. Do a pressure test on the cases. Plug up all opening air tight. Then add 9 lbs of vacuum or pressure to the pulse line fitting and see how long it holds for. It should hold for a few minutes. If not, you got a leak and will be running lean. (Very bad)

  5. #5
    Tony's Avatar
    Join Date
    May 2007
    Location
    North Carolina
    Posts
    1,760
    +1
    38
    Quote Originally Posted by xlint89 View Post
    Don't hope. Do a pressure test on the cases............will be running lean. (Very bad)
    I will test...not going to burn up my new topend, but I still hope they're good.

  6. #6
    xplayer2885's Avatar
    Join Date
    Sep 2006
    Location
    LI, NY
    Posts
    1,251
    +1
    43
    Crank seals usaully dont go. But its always better to be safe than sorry.

  7. #7
    cheatin' piston popper addicted's Avatar
    Join Date
    Jul 2006
    Location
    north jersey
    Posts
    6,188
    +1
    176
    If you are that far into the motor already, you are about 90% of the way there. take the extra hour and $40 and install new seals. It would be foolish not to.

  8. #8
    Tony's Avatar
    Join Date
    May 2007
    Location
    North Carolina
    Posts
    1,760
    +1
    38
    Quote Originally Posted by addicted
    take the extra hour and $40 and install new seals. It would be foolish not to.
    The time or money isn't the issue. I just didn't want to go through removing engine and having to realign it upon install. I'm a auto tech but I've never split 2 cycle cases or realigned a motor before, guess I should read up on it.

  9. #9
    cheatin' piston popper addicted's Avatar
    Join Date
    Jul 2006
    Location
    north jersey
    Posts
    6,188
    +1
    176
    As long as you keep track of the shims when you take it out, it is a drop in and go affair. splitting the cases is about 30 bolts. you will need to clean them and buy some good sealant, and of course have a torque wrench, but very straightforward.

  10. #10
    Tony's Avatar
    Join Date
    May 2007
    Location
    North Carolina
    Posts
    1,760
    +1
    38
    Quote Originally Posted by addicted View Post
    As long as you keep track of the shims when you take it out, it is a drop in and go affair. splitting the cases is about 30 bolts. you will need to clean them and buy some good sealant, and of course have a torque wrench, but very straightforward.
    So the alignment in up/down and not left/right? No special tool needed to align with?

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. Crank Seal question
    By Ryanc91 in forum Yamaha Old School Skis
    Replies: 3
    Last Post: 07-09-2014, 09:18 PM
  2. 99 SLTH 700 Crank Seal Replacement questions
    By tjruberg in forum Polaris Open Discussion
    Replies: 0
    Last Post: 08-25-2009, 01:15 AM
  3. 580 91 580 Yellow Engine Rebuild - Crank Seal Question
    By rob2337 in forum 2-Stroke Performance
    Replies: 1
    Last Post: 04-08-2009, 08:57 PM
  4. Crank Casing Seals Question
    By Chrisrokc in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 12-28-2007, 12:41 AM
  5. crank seals
    By John in forum Yamaha PWC Performance (2-stroke)
    Replies: 10
    Last Post: 01-28-2006, 01:38 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
  •