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  1. #1

    '96 XP Rave Valve Orientation

    OK.....so I was looking at threads about cleaning the rave valves. I have never done so in 12 years, so decided to pop them out and see how mucked up they were. They weren't as bad as a lot of the photos I have seen; maybe cuz I have been in the practice of shooting SeaDoo Lube in there after every ride?

    So I took the valves apart and cleaned them, put them back together, went to put it in and suddenly thought to myself "which direction to the valves go in"?? Yikes! My best recollection is flat edge away from carbs, angled edge toward carbs......is this correct or backwards?

    Thanks in advance.


  2. #2
    flyin' the friendly skies airbornexp's Avatar
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    there is a stamp in the metal that says "top". Flat edge up i believe...

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    Moderator RX951's Avatar
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    Quote Originally Posted by airbornexp View Post
    there is a stamp in the metal that says "top". Flat edge up i believe...
    ditto, it will say top

    Rave Valve Cleaning How To
    http://saldman.tripod.com/Rave_valve/Rave.html


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    flyin' the friendly skies airbornexp's Avatar
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    What engine are those raves out of? i dont have groves on mine like the ones in the picture...

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    Moderator RX951's Avatar
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    787 rotax


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    Tool Bag water worx's Avatar
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    96 motors didnt have grooves.

    The grooved ones came out in 97 as a update to a bogging problem.

  7. #7
    Quote Originally Posted by airbornexp View Post
    there is a stamp in the metal that says "top". Flat edge up i believe...
    OK....don't mean to sound stupid, but they rest nearly vertically in motor, tilting slightly up away from carbs and slightly down toward carbs. So, side with top would face away from carbs? Hopefully that made sense.

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    96XPSS's Avatar
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    Quote Originally Posted by Desert Rat View Post
    OK....don't mean to sound stupid, but they rest nearly vertically in motor, tilting slightly up away from carbs and slightly down toward carbs. So, side with top would face away from carbs? Hopefully that made sense.
    Yes, "top" faces away from carbs, toward spark plugs.

  9. #9
    1996XP's Avatar
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    I'm 99% sure the beveled side goes towards the cylinder (if that makes it easier) because i believe the reason the bevel is there in the first place is to curve to the shape of the piston. Try unscrewing the valve, and just putting the metal part in. It won't fall in by itself. See which way it sits better. Should be beveled side toward the cylinder. Hope that helps!! I had the same questions the first time too.

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    96XPSS's Avatar
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    Quote Originally Posted by 1996XP View Post
    I'm 99% sure the beveled side goes towards the cylinder (if that makes it easier) because i believe the reason the bevel is there in the first place is to curve to the shape of the piston. Try unscrewing the valve, and just putting the metal part in. It won't fall in by itself. See which way it sits better. Should be beveled side toward the cylinder. Hope that helps!! I had the same questions the first time too.
    Bevel is there to fit flush inside the exhaust port when retracted. The RAVE changes the port height, and gives more compression when extended out for better low-end torque. This kills max rpms though, hence why it retracts at 5500 rpm.
    Last edited by 96XPSS; 07-11-2008 at 06:21 PM.

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