Results 1 to 10 of 10
  1. #1
    ZeeC's Avatar
    Join Date
    May 2007
    Location
    Twin Cities, Minnesota
    Posts
    74
    +1
    2

    Hurricane cracked cylinder

    Dropped the ski's in for the first time this summer, started them on the trailer and the hurricane was pissing water from the mag cylinder on the carb side like a Cherub. Nice hair line crack on the cylinder. I assume I didn't drain all the water out of the engine over the winter grrrr. So my question is if compression is still good can I just replace the jug and keep the piston? Or am I asking for trouble? I assume I can do just one cylinder? Is it still a good core (if I want to do a full top end). Finally if I just wanted to redneck it could I just JB weld it? (Ok kidding, but summer is short here in Minnesota) What all I need in parts to get this done ASAP.


    Click image for larger version. 

Name:	IMG_0761.jpg 
Views:	69 
Size:	56.9 KB 
ID:	362717


  2. #2
    Jakespiteri's Avatar
    Join Date
    Oct 2014
    Location
    Toronto Canada
    Posts
    70
    +1
    2
    If I were you I would just buy a new jug and call it a day. The questions you have to ask are has the engine ever been rebuilt? If yes then you have to take apart the head on that cylinder to see what size the piston is and make sure it's okay before you go any further.

    If the piston looks fine as well as the rings then you should have to problem just slapping a new jug on there, make sure it's bored to your size piston.

    As for jb weld I have used it on the red done covers and surprising it worked well and held up for a whole season with no leaks until I replaced it. But I don't know if it will work on a cylinder, I wouldn't wanna take the risk and damage your motor anymore than it is

  3. #3
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    46,529
    +1
    2,709
    Quote Originally Posted by Jakespiteri View Post
    If I were you I would just buy a new jug and call it a day. The questions you have to ask are has the engine ever been rebuilt? If yes then you have to take apart the head on that cylinder to see what size the piston is and make sure it's okay before you go any further.

    If the piston looks fine as well as the rings then you should have no problem just slapping a new jug on there, make sure it's bored to your size piston...
    If the replacement cylinder is freshly bored then the piston should have new rings, so the rings can properly break in and seal with the cylinder.

    How many running hours on this engine, since new or since the last rebuild?

  4. #4
    ZeeC's Avatar
    Join Date
    May 2007
    Location
    Twin Cities, Minnesota
    Posts
    74
    +1
    2
    Well... I bought it non-running (bad stator) and the guy said he put a new engine in a year before it was non-running. Since I have had it I have put maybe 50 hours on it.

    Where is the best place to get a jug?

  5. #5
    ZeeC's Avatar
    Join Date
    May 2007
    Location
    Twin Cities, Minnesota
    Posts
    74
    +1
    2
    Do I need to replace the O rings? or the cylinder head ring? Obviously the base gasket will need to be replaced.

  6. #6
    ZeeC's Avatar
    Join Date
    May 2007
    Location
    Twin Cities, Minnesota
    Posts
    74
    +1
    2
    It's an SBT rebuilt motor is there any weirdness I need to worry about? I am being left alone in the garage tomorrow for Father's Day so I guess I will find out tomorrow

  7. #7
    MSX 150 guy lives on Mr. GP1800's Avatar
    Join Date
    Jun 2010
    Location
    Milwaukee WI
    Posts
    18,079
    +1
    1,609
    Quote Originally Posted by ZeeC View Post
    It's an SBT rebuilt motor is there any weirdness I need to worry about? I am being left alone in the garage tomorrow for Father's Day so I guess I will find out tomorrow

    It all depends on what SBT does to the motor. They may deck the case which would then lower the cylinder. They may also machine the top of the cylinder. Then the heads would need to be cut to compensate. I do not know any of this for sure, but to figure it out, some measuring would need to take place. Hopefully someone with more knowledge of the SBT motor program would have a definite answer.

    Maybe a call to SBT would be a good idea. I would think they could set you up with what would make it all right.

  8. #8
    ZeeC's Avatar
    Join Date
    May 2007
    Location
    Twin Cities, Minnesota
    Posts
    74
    +1
    2
    Looks like the crack went on both sides and on the intake port, it also looks like some water got into the case. I only ran it for like 20 seconds on the trailer in the water so I am not sure how concerned I should be. I did run it out of the water as well to blow any water out. I measured the bore and it is 81.2 mm which I believe is stock. the compression was 120 on both before I started tearing it down. My thinking is to get a used jug on ebay and just be done with it.





    Click image for larger version. 

Name:	Photo Jun 21, 2 24 12 PM.jpg 
Views:	65 
Size:	84.2 KB 
ID:	362967Click image for larger version. 

Name:	Photo Jun 21, 2 24 06 PM.jpg 
Views:	58 
Size:	91.8 KB 
ID:	362968Click image for larger version. 

Name:	Photo Jun 21, 2 22 35 PM.jpg 
Views:	60 
Size:	83.8 KB 
ID:	362969Click image for larger version. 

Name:	Photo Jun 21, 2 21 16 PM.jpg 
Views:	62 
Size:	89.5 KB 
ID:	362970Click image for larger version. 

Name:	Photo Jun 21, 1 46 23 PM.jpg 
Views:	55 
Size:	87.6 KB 
ID:	362971

  9. #9
    Connecticut CrazyA's Avatar
    Join Date
    Nov 2005
    Location
    CT.
    Posts
    8,294
    +1
    1,110
    Stroker 1450 sent me a good vid on how well minor rust damage can hide itself. It think it's a good fit here. Not trying to jump your thread, just make sure to check thinks very closely.
    Attached Files Attached Files

  10. #10
    MSX 150 guy lives on Mr. GP1800's Avatar
    Join Date
    Jun 2010
    Location
    Milwaukee WI
    Posts
    18,079
    +1
    1,609
    Quote Originally Posted by CrazyA View Post
    Stroker 1450 sent me a good vid on how well minor rust damage can hide itself. It think it's a good fit here. Not trying to jump your thread, just make sure to check thinks very closely.
    That is also something that would never get caught by most people because nobody ever wants to pull a motor out and split the cases to make sure things are good.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. 96 xp cracked cylinder
    By briane1978 in forum Sea Doo Open Discussion
    Replies: 9
    Last Post: 11-22-2015, 11:21 AM
  2. FS 08 4Tec Upper & Lower Cases, Cracked Cylinder
    By Chupacobra in forum Sea Doo Classifieds
    Replies: 0
    Last Post: 09-02-2015, 05:46 PM
  3. Cracked cylinder case
    By dannyual777 in forum 2-Stroke Performance
    Replies: 20
    Last Post: 03-20-2012, 03:59 PM
  4. WTB 4-tec block with cracked cylinder
    By Louis914 in forum Sea Doo Classifieds
    Replies: 3
    Last Post: 07-14-2010, 05:51 AM
  5. Cracked cylinder
    By brn2rase in forum Yamaha Old School Skis
    Replies: 7
    Last Post: 04-06-2010, 12:59 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
  •