1995 seadoo xp, runs out-of-water, dies in-water under load - Page 5
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  1. #41
    PWCToday Newbie
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Quote Originally Posted by wire4money View Post
    That RV gear is a real soft brass, and I cannot see a way it could jump time without causing serious damage to the gear. If the gear is damaged, you need to split the cases, clean out all the brass shavings, and verify the center gear has not walked on the crankshaft.
    Thanks for your response, when splitting the case will I need new gaskets or will using the existing ones be fine?

  2. #42
    Top Dog wire4money's Avatar
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Quote Originally Posted by fbicodex View Post
    Thanks for your response, when splitting the case will I need new gaskets or will using the existing ones be fine?
    The case halves are put together with sealant.

  3. #43
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Alright, got the RV shaft out. Most of the gear is in good condition but one side of it did get grind down some. The gear on the crank-shaft seems to be in perfect condition(as expected since it is not as soft as the brass one). No sign of any brass flakes chipped off. Seems it was "smeared" more than flaked.

    I think I might just try to find a replacement for that brass gear and then put the RV shaft back. Do you still think I should split the bottom-end?

    Images below.
    RV_gear_good.jpgRV_gear_bad.jpgcrank_gear.jpg

  4. #44
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    No need to split the case. Flush out the rv cavity with some diesel fuel to get any brass out. Crank gear looks just fine. Take the clip off the rv shaft and slide the spring and gear off. Chuck it in a drill and spin it, make sure it runs out true. A lot of times they bend. If it's good, order a new gear and reassemble.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  5. #45
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Quote Originally Posted by Myself View Post
    No need to split the case. Flush out the rv cavity with some diesel fuel to get any brass out. Crank gear looks just fine. Take the clip off the rv shaft and slide the spring and gear off. Chuck it in a drill and spin it, make sure it runs out true. A lot of times they bend. If it's good, order a new gear and reassemble.
    Got the new gear, assembled everything back together yesterday. Tested on the trailer, fired right up.
    Took it out for a spin this morning and it finally ran! and it ran good! ....until the screws on the carbs rattled loose(yikes, don't let that happen at home kids) :P but now that I know it finally works good, I will tighten everything up and it'll be good to go!

    Thanks you for sticking with me through this thread @Myself, greatly appreciated your help! also thank you to @wire4money

  6. #46
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    To those that said, 125psi was not enough, and those who said the pop-off pressure on the needles had to be exact to spec... You were dead wrong. Maybe with some models it matters more. And maybe it does have a little less power. who knows... I get up to 7000 rpms easy and fast so it's more than enough compression for me...

    1995 sea doo xp

    I'll try and get a GPS reading on top speed

  7. #47
    Resident Guru JC-SuperJet's Avatar
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Well, before you draw that conclusion about the "125 psi" compression being good, you need to know that cheap compression gauges can misread lower by around -20 psi.

    This is due to the extension hose volume affecting the reading.

    Use a Snap-On gauge to find your true cranking compression.

  8. #48
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    Glad it worked out. A little dab of blue medium strength threadlocker on every bolt.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

  9. #49
    PWCToday Newbie
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    Re: 1995 seadoo xp, runs out-of-water, dies in-water under load

    I once had 120 psi each side and it pulled in water , and a tube.

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