Js550 crankshaft part identification? [Help] - Page 2
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  1. #11
    Resident Guru sportsfreak29's Avatar
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    Re: Js550 crankshaft part identification? [Help]

    Ok, here is the article about the ATF mod, HOWEVER, DO NOT USE ATF!!!

    ATF will rot your seals and the bearing housing will start leaking within a season or two.

    Do the mod but fill with Royal Pure 15/40wt, 68wt or 90wt gear oil.

    http://www.pwctoday.com/showthread.php?t=257902

    Must be done with the unit disassembled and the lower hole must be drilled between the inner bearings for fluid flow.
    Last edited by sportsfreak29; 10-21-2018 at 12:03 AM.
    If you're not crashing, then you're not trying!!!

    '90 650sx, full mod with all the bells and whistles.
    '84 JS550/650 pump swap with Viper 9000 motor.
    '93 550sx with a 650sx motor and Rhass pump kit.
    '81 JS440, full mod 550 PP motor. '
    '93 300sx/750 SP BOB.

    Special thanks to Chris Newmiller, the guys at Prowatercraft Racing, Rhaas Products, and Mitchell at M&M Marine!

  2. #12
    I dream skis bird's Avatar
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    Re: Js550 crankshaft part identification? [Help]

    Quote Originally Posted by sportsfreak29 View Post
    Ok, here is the article about the ATF mod, HOWEVER, DO NOT USE ATF!!!

    ATF will rot your seals and the bearing housing will start leaking within a season or two.

    Do the mod but fill with Royal Pure 15/40wt, 68wt or 90wt gear oil.

    http://www.pwctoday.com/showthread.php?t=257902

    Must be done with the unit disassembled and the lower hole must be drilled between the inner bearings for fluid flow.
    Are you on the same thread?.. You're talking about the DRIVESHAFT carrier housig. This thread is about the CRANKSHAFT.
    Third Coast Freeride - Midwest Wave Warriors

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  3. #13
    Top Dog Bionic racing's Avatar
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    Re: Js550 crankshaft part identification? [Help]

    If you cannot find the crankshaft part your lookin for , I've got some junk cranks in my recycle pile , can split one and send to you

  4. #14
    Resident Guru sportsfreak29's Avatar
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    Re: Js550 crankshaft part identification? [Help]

    Yeah, driveshaft carrier bearing.

    Probably the wrong thread to post about it but it looked like someone was asking about them.

    I do have a question though, I have a crank that is questionable and another that has good bearings but the woodruff key grenaded and ruined the key groove and taper.

    Is this crank repairable?

    Can a crank shop mix and match these two cranks to get one good one?
    If you're not crashing, then you're not trying!!!

    '90 650sx, full mod with all the bells and whistles.
    '84 JS550/650 pump swap with Viper 9000 motor.
    '93 550sx with a 650sx motor and Rhass pump kit.
    '81 JS440, full mod 550 PP motor. '
    '93 300sx/750 SP BOB.

    Special thanks to Chris Newmiller, the guys at Prowatercraft Racing, Rhaas Products, and Mitchell at M&M Marine!

  5. #15
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    Re: Js550 crankshaft part identification? [Help]

    Quote Originally Posted by sportsfreak29 View Post
    Yeah, driveshaft carrier bearing.

    Probably the wrong thread to post about it but it looked like someone was asking about them.

    I do have a question though, I have a crank that is questionable and another that has good bearings but the woodruff key grenaded and ruined the key groove and taper.

    Is this crank repairable?

    Can a crank shop mix and match these two cranks to get one good one?
    crank parts can changed from one crank to another if style is identical.(2 or 3 piece crank).
    but if you're going to do this,you may as well put new bearings too!

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