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  1. #11
    PWCToday Regular
    Join Date
    Oct 2009
    Location
    The South
    Posts
    76

    Re: JS550 Head Gasket Sealing Problems

    Thanks. I bought a new head on ebay for 25.00 (from a reliable guy who only sells clean parts). I'm gonna go with the fiber gasket and will use 1211. Is it a permatex product or is it threebond? Where can I obtain this item from.. ie. home depot, lowes, autopart store? Will the head be difficult to separate from the cylinder upon removal a few years down the rosf when rings are needed after using 1211 just so I know what I'm getting into?

    Thanks
    Water:
    1988 X-2
    1988 650SX
    1989 650SX
    1990 650SX
    1987 650SX
    (3) 1986 JS300's
    1987 JS300
    1985 JS550
    1983 JS550 Team Butch Racing Ski... lots of Mods!!
    1992 Sea-Doo SP
    1978 JS440
    1986 JS440 (my first ski)

    ONE HOT GIRL

    Land:

    1997 RM125
    1992 LT250R Quadracer Modded to the Limit
    1986 RM125
    (2) 1987 LT230's
    2000 Yamaha Blaster
    2000 Yamaha Warrior
    2001 YZ80
    2003 KX 60
    1989 KX 250
    1990 KX 250

    ONE HOT GIRL

    Lots of projects in the works!!!

  2. #12
    PWCToday.com Is My Home Away From Home 10mm's Avatar
    Join Date
    Apr 2009
    Location
    MN
    Age
    39
    Posts
    10,822

    Re: JS550 Head Gasket Sealing Problems

    You won't find 1211 @ the autoparts store. You will have to order it on line. Just do a search. I got mine from Gordy at pacific motor sports. Just remember a little goes a long way's with that stuff. Your head will be a little tough to get off after a few years whether you use 1211 or not.

  3. #13
    PWCToday Regular
    Join Date
    Oct 2009
    Location
    The South
    Posts
    76

    Re: JS550 Head Gasket Sealing Problems

    Quote Originally Posted by Velocity_Stack View Post
    If you're using acorn style nuts, be sure to have thicker washers in place.

    Your torque may actually be the nuts bottoming out on the studs.

    I'm going to triple up the washers as well since I'm using the stock cap nuts.

    thanks
    Water:
    1988 X-2
    1988 650SX
    1989 650SX
    1990 650SX
    1987 650SX
    (3) 1986 JS300's
    1987 JS300
    1985 JS550
    1983 JS550 Team Butch Racing Ski... lots of Mods!!
    1992 Sea-Doo SP
    1978 JS440
    1986 JS440 (my first ski)

    ONE HOT GIRL

    Land:

    1997 RM125
    1992 LT250R Quadracer Modded to the Limit
    1986 RM125
    (2) 1987 LT230's
    2000 Yamaha Blaster
    2000 Yamaha Warrior
    2001 YZ80
    2003 KX 60
    1989 KX 250
    1990 KX 250

    ONE HOT GIRL

    Lots of projects in the works!!!

  4. #14
    PWCToday Regular
    Join Date
    Oct 2009
    Location
    The South
    Posts
    76

    Re: JS550 Head Gasket Sealing Problems

    Update: I fixed it early this season. I ditched the water bypass and all was well. The exhaust was getting so hot that it was boiling off the water once the engine warmed up and letting out steam instead of water giving me the impression that the head was warped. All these mods suck and people should just leave these things stock or buy a faster ski. Don't people realize that you need water in the exhaust to keep everthing cool. The thing has a hood on it and has no airflow going by. Common sense is obviously not common these days. I adjusted the carb and adjusted nice and rich so I have cool operating temps and real dark colored plugs. I have her so rich on the bottom that it even runs a little rough until you get on it but with that team butch pipe I know from my experience with dirtibikes that it wants to run lean so you have to richen it up a little to make it last. People often mistake a motor that runs great to be jetted correctly. Great running motors are running lean. Rich motors are little rough and sluggish on throttle response but the trade off is you will sacrifice a little performance for longevity. Race motors are only designed to last 2-4 hours so I cannot afford to be rebuilding that quickly. I heard that Justin Barcia runs his MX bike so lean that if he were to stall his chances of restarting are a lot slimmer than the average guy out there. Obviously there intensions are to get good lap times and win races and not to keep a single engine running all season long!! just my .02. I do not have that luxory.
    Last edited by Olds'kool Standup Rider; 10-04-2010 at 12:03 PM.
    Water:
    1988 X-2
    1988 650SX
    1989 650SX
    1990 650SX
    1987 650SX
    (3) 1986 JS300's
    1987 JS300
    1985 JS550
    1983 JS550 Team Butch Racing Ski... lots of Mods!!
    1992 Sea-Doo SP
    1978 JS440
    1986 JS440 (my first ski)

    ONE HOT GIRL

    Land:

    1997 RM125
    1992 LT250R Quadracer Modded to the Limit
    1986 RM125
    (2) 1987 LT230's
    2000 Yamaha Blaster
    2000 Yamaha Warrior
    2001 YZ80
    2003 KX 60
    1989 KX 250
    1990 KX 250

    ONE HOT GIRL

    Lots of projects in the works!!!

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