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  1. #1

    Cracking valve retainers???

    Is it common for valve retainers to crack on a 07 mod engine? What do u think the cause would be? It happened to a friend of mine, cant remember which side but i know it was only one. I think it was the inlet when i speak with him ill let u know.


  2. #2
    bradsta's Avatar
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    Damo.r, that is what happend to mine. The ski had done 109hrs a retainer broke in half and dropped the valve, next was a metal to metal bang!!! $4000 later to re build, (2 pistons, bore machined, head machined and repaired and full set of new valves and seadoo centre valve retainers).
    Scary thing was i got to look at all the other valve retainers from the engine and every one had big spider cracks running through them. It was only a matter of time till it went bang!!

  3. #3
    The ski's have taken a "backseat" to the Corvette DarthAWM's Avatar
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    Were these stock retainers?

  4. #4
    Quote Originally Posted by DarthAWM View Post


    Were these stock retainers?
    Yes stock retainers.

  5. #5
    Were these stock valve retainers with stock valve springs might be another question.

  6. #6
    The ski's have taken a "backseat" to the Corvette DarthAWM's Avatar
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    Quote Originally Posted by damo.r View Post
    Yes stock retainers.
    whew I'm running Rivas

  7. #7
    thompsdw's Avatar
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    I have seen the stock retainers crack on a stock RXP with no mods. Not sure what causes it, but they will fail.

  8. #8
    Quote Originally Posted by rotortiller View Post
    Were these stock valve retainers with stock valve springs might be another question.
    Yes they were stock retainers with stock springs. The only thing that i can think of is bouncing it off the limiter way to many times has caused it. Anybody have any other theory's???

  9. #9
    bradsta's Avatar
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    Yep mine was stock valve train, next time retainers will be one of the first mods, better be safe than sorry!!!!

  10. #10
    Gus13letter's Avatar
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    I am going though and engine rebuild and was going to replace the retainers till I found out how much they cost. About $5 each and you need 24 of them totaling $120+. I never heard of anyone breaking them before. Maybe I will reconsider.

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