Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11
  1. #1
    2 x SLT750 & Learning skoots's Avatar
    Join Date
    Jul 2008
    Location
    Northern Canada
    Posts
    83

    Disaster - Need Guidance (busted exhaust manifold gasket)

    I was skooting along at 40 when the ski suddenly dropped and held at 26. I removed the seat and noticed a stream of water coming out the exhaust manifold gasket on the aft (No. 3) cylinder. I towed it back to shore, removed the plug and sure enough water entered the cylinder. All other plugs were dry and clean. It seems the gasket is a discontinued part, any suggestions on what to use? Other than changing the gasket, what else should I do or check?

    SLT750 Fuji (blue) motor.

    Thanks

    EDIT: I was riding on a shallow lake where the water is always murky with sand and I'm particularly worried about cylinder/piston damage. Should I be?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,595
    +1
    1,276
    Get the water out of the engine ASAP.

    You need to prevent rust from attacking the crank shaft and bearings.

    Run it without cooling water (no garden hose or flush connection), for 10-15 seconds at a time, rev it once or twice with a quick burst. Let it cool a while, do it again.

    Spray fogging oil into the carb throats while it is running, and into the spark plug holes afterwards, to protect the insides.

    What year is your SLT750?
    You sure the gasket is not available?
    What part number are you looking for?

  3. #3
    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
    The gaskets are available through aftermarket for sure. Not positive about OEM.

    Fog the cyl and crank to prevent rust.

    Remove the head and have a visual inspection of the damage.

    Do a crank index to verify the water didn't hydrolock the crankshaft before you do any more parts buying.

  4. #4
    2 x SLT750 & Learning skoots's Avatar
    Join Date
    Jul 2008
    Location
    Northern Canada
    Posts
    83
    Thanks K447. While waiting for an answer I figured I should get the water out from the top of the piston so what I did is fill it with oil and cranked the engine without the plug on. It sure made a mess but I'm pretty confident all moisture was ejected

    xlint I will look up the procedure to check for hydrolock, thanks for your suggestions.

  5. #5
    seaobin's Avatar
    Join Date
    Jun 2007
    Location
    Raleigh, North Carolina, United States
    Posts
    1,573
    +1
    1

  6. #6
    2 x SLT750 & Learning skoots's Avatar
    Join Date
    Jul 2008
    Location
    Northern Canada
    Posts
    83
    Excellent, thanks !

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    36,595
    +1
    1,276
    Quote Originally Posted by skoots View Post
    Thanks K447. While waiting for an answer I figured I should get the water out from the top of the piston so what I did is fill it with oil and cranked the engine without the plug on. It sure made a mess but I'm pretty confident all moisture was ejected...
    Some water may have worked its way down into the crank case, which is why I suggested running the engine dry and then spraying fogging oil into the carb intakes.

  8. #8
    2 x SLT750 & Learning skoots's Avatar
    Join Date
    Jul 2008
    Location
    Northern Canada
    Posts
    83
    I picked up and sprayed fogging oil this morning.

    Xlint is the following procedure accurate enough to check for hydrolock?

    1. Remove plugs and bring forward (No. 1) piston to TDC
    2. Drop wooden pegs in spark plug holes on pistons No.2&3.
    3. Mark both wooden pegs with pencil.
    4. Remove wooden pegs and compare markings. If marks align crank should be ok.

  9. #9
    Wankel till I die!! jonjonwells's Avatar
    Join Date
    Apr 2007
    Location
    SE Kansas
    Posts
    637
    Ooh, I like the wooden peg idea. Thats the correct procedure.

  10. #10
    2 x SLT750 & Learning skoots's Avatar
    Join Date
    Jul 2008
    Location
    Northern Canada
    Posts
    83
    Quote Originally Posted by jonjonwells View Post
    Ooh, I like the wooden peg idea. Thats the correct procedure.
    Great then, my crank is good to go

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. Exhaust Manifold gasket help!
    By PolarisPRO1200 in forum Polaris Open Discussion
    Replies: 2
    Last Post: 06-30-2009, 09:40 PM
  2. WTB: GPR Exhaust Manifold Gasket
    By YamahaPat in forum Yamaha Classifieds
    Replies: 1
    Last Post: 06-22-2009, 02:36 PM
  3. st. exhaust manifold gasket
    By don jordan in forum Yamaha PWC Performance (2-stroke)
    Replies: 0
    Last Post: 02-28-2009, 07:06 PM
  4. Which way is up on the exhaust manifold gasket and threebond ?
    By paulgray in forum Kawasaki PWC Performance (4-stroke)
    Replies: 3
    Last Post: 08-04-2008, 02:56 AM
  5. Exhaust Pipe/Exhaust Manifold Gasket Install
    By kepneriphone in forum Polaris Open Discussion
    Replies: 6
    Last Post: 06-02-2008, 09:57 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
  •