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  1. #1
    Petron's Avatar
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    Difference between 2 rave valves

    Hi. I have a 96 Sea Doo GSX with 787 engine.

    I keep a second engine thats ready to go should a problem occur with engine A.

    One set of rave valves has the 2 vertical slots and the other is all flat. Whats the difference?

    Thanks guys


  2. #2
    96XPSS's Avatar
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    Your hull is the reason for the slots. For some reason the GSX 800's would gum up more quickly than others, and SD's solution is the slots. That's it...

  3. #3
    Petron's Avatar
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    So using the slotted rave valves for both engines (787) will be fine in the future? I have two sets of raves both slotted. Thanks

  4. #4
    The slotted raves were an upgrade to the flat ones. The flat ones were prone to breaking. Use the slotted.

  5. #5
    Petron's Avatar
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    this makes complete sense because my flat raves were cracked. I got lucky though, they happen to crack where the oring sits & didn't fall down wiping the piston. I noticed this while cleaning.

  6. #6
    96XPSS's Avatar
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    Quote Originally Posted by Petron View Post
    this makes complete sense because my flat raves were cracked. I got lucky though, they happen to crack where the oring sits & didn't fall down wiping the piston. I noticed this while cleaning.
    It may make perfect sense, but I saw the TSB that disproves the theory.

    PS-Send me your old RAVES as they do offer some performance gains over the slotted...

  7. #7
    96XPSS's Avatar
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    The 350 numbered RAVES were the ones prone to breaking, (located in the circle right of the "TOP" stamp), and these were on early production engines. If you had 351 or 352 series RAVES these were the good ones.

  8. #8
    Tool Bag water worx's Avatar
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    In 97 Seadoo had a problem with the raves hanging at 5000 rpm so they slotted the raves to get exhaust gases under then & they would "float" rather than drag.

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