Seadoo SPX 95 connecting rod
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  1. #1
    PWCToday Newbie jusdpomme's Avatar
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    Seadoo SPX 95 connecting rod

    Hello everyone,


    I'm new to this forum, my name is Alex. I bought my SPX in august last year and visited here somewhat regularly for some advices (like replacing the grey fuel lines). I also would like to say that I started wrenching my machines about 2 years ago, so I'm not an experienced mechanic, but I like to work on small engines.



    So here's the thing. Due to two old small oil lines, my engine ran without oil and that destroyed both pistons and cylinders. I sent my cylinders to my local mechanic shop so they can maybe save them or oversize them, with a top end rebuilt kit. While everything was off, I looked into the crankcase and saw a little bit of water, about maybe 3 tablespoons. I removed that water with a little plastic syringe I got in a pharmacy. My worry is both connecting rods. Are they supposed to be that color? I don't think the previous owner(s?) rode in saltwater, but since I bought it I always rode in freshwater. Engine is a 657x, probably never rebuilt because the bolts still had original paint.

    Thanks!






    conrod.jpg
    Last edited by jusdpomme; 08-12-2018 at 04:43 PM.

  2. #2
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: Seadoo SPX 95 connecting rod

    That engine has been previously rebuilt, or purchased from a rebuilder.

    You should have a local mechanic inspect the crank.


    I am really curious what your old pistons and head looked like, and
    what happened to your oil injection lines?


    Bill M.

    Why aren't you splitting the cases and replacing main seals?

    Are you planning on removing the oil injection, or just replacing the hoses?
    Last edited by wmazz; 08-18-2018 at 01:58 AM.
    Horsepower == Speed, RPM != Speed



  3. #3
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    What makes you say it's rebuilt/replaced? Also, if possible I would like to not take the engine out if I don't have to. If I can do it myself, what do I have to look for?

    Basically, old oil lines broke at about the same time and I didn't realize. I'm kinda clunky and made a mess while refilling oil; after a ride I always unscrew the drain plug just in case there's some water and I started to see a bit of oil in the water. I thought it was because of my clunkyness but I didn't think further than that, and that was silly. I took a photo of the cylinders and the pistons, but I don't recall which one is MAG/PTO side.

    The cylinders will be oversized this week when the shop receives the new pistons. I won't remove the oil injection, and I already replaced the hoses.

    All in all, that's a $500 job because of about 10" of $0.55/ft hose.

    Lastly, what do you mean by "splitting the cases"? As for the seals, I will look into it. What are signs of too much wear?

    Edit: In response to my initial question, I looked online for new rods and they are the same color.

    IMG_20180805_223011.jpg IMG_20180805_223053.jpg IMG_20180806_211723.jpg IMG_20180806_211757.jpg IMG_20180806_211837.jpg IMG_20180806_211905.jpg IMG_20180806_211933.jpg IMG_20180806_211955.jpg IMG_20180806_212025__01.jpg IMG_20180807_214048.jpg IMG_20180807_214350.jpg
    Last edited by jusdpomme; 08-19-2018 at 08:13 PM.
    '95 SPX

  4. #4
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: Seadoo SPX 95 connecting rod

    The small pin bearings are not stock, and the heads of the bolts were white.

    Either someone rebuilt the top end, and repainted the bolts (some mechanics
    will do that) or it was purchased from an engine rebuilder. Last time I used
    an oem rebuilt engine, they used oem pin bearings.


    Bill M.
    Horsepower == Speed, RPM != Speed



  5. #5
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    Should I replace them or only if there's signs of wear?
    '95 SPX

  6. #6
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: Seadoo SPX 95 connecting rod

    Quote Originally Posted by jusdpomme View Post
    Should I replace them or only if there's signs of wear?
    From my point of view (from looking at pictures) You actually had an
    oil supply failure. That means there is the real possibility that the engine
    seized several times. Did that hose snap in half, or did it crack open and
    leak?

    It is too common for riders and/or mechanics blame a connecting rod failure
    on the oil injection pump, or no oil premix.

    Not only did the engine seize, but you rode it until the cylinders were completely
    dry. It must have stalled and restarted a few times.

    This is why I suggested that you have a local dealer inspect your crank
    (and pin bearings). I can not tell if your crank is worn out, by looking at
    pictures.


    Bill M.

    I gotta admit, that is a BS answer, because if a mechanic tells you that the
    crank is ok, and it fails sometime down the road. He knows that you will
    sue him, or threaten the dealer.

    So, the real answer is: Hell yes, that bottom end is trash!
    Last edited by wmazz; 08-20-2018 at 05:13 AM.
    Horsepower == Speed, RPM != Speed



  7. #7
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    I assure you this isn't a BS answer. I prefer that than a "nah dont worry itll run just fine"

    However I never blamed the connecting rod, I was just asking if the color was okay and it turns out they're sold that color. I recognize I never said the two small oil lines were broken in my OP though.. But you are right. I ran it a couple times after it stalled then my buddy went back to me and towed me slowly to shore.

    Thanks for your input. My local shop only had a "full rebuild kit" so I told him I'd take it anyway but I don't know what is included, hopefully I don't have to buy too much other pieces.
    Last edited by jusdpomme; 08-20-2018 at 08:59 AM.
    '95 SPX

  8. #8
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    A little update: I got my engine out and I'm currently trying to remove the flywheel (mag side). It looks like it doesn't want to be removed, my puller just bends. I will try to let it sit overnight. Any other tips?IMG_20180822_204500.jpg
    '95 SPX

  9. #9
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    Nevermind the last post. I found out I wasn't heating enough. I sent the crankshaft in for a replacement from a shop that does like SBT; they send a remanufactured one and I send mine. Turns out I had a bad bearing and all of the others were starting to show signs of wear. I will receive the new crankshaft Thursday.

    Now I got my gasket kit. I have three seals and I don't know which one goes where. I think one or two go on the drive shaft? I'm not sure.

    Anyway, thanks Bill for making me pull apart that engine, originally I wanted to only rebuild top-end but that thing was about to give.
    '95 SPX

  10. #10
    PWCToday Newbie jusdpomme's Avatar
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    Re: Seadoo SPX 95 connecting rod

    Okay so I got my remanufactured crankshaft. I was told to just put 2 stroke oil with a finger everywhere, but in the manual it says to apply anti-seize on part of crankshaft where bearing sits. In the picture of the manual I can also see a drop sign which points under the bearing. Do I have to put a light coat of anti-seize everywhere a bearing of the crankshaft makes contact with the crankcase, or will 2-stroke oil do just fine?

    as.png
    Last edited by jusdpomme; 08-30-2018 at 11:46 PM.
    '95 SPX

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