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  1. #1
    Bakatare's Avatar
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    BOV on Stock Boat?

    09 FZR with Riva manifold, intake & ff exhaust. More to come from wish list. Is it worth having on a stock boat or wait for the big stuff later? Slowly adding parts... Thank you....


  2. #2
    32 Valves To Love! Racecar_Dave's Avatar
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    Well a BOV reduces compressor surge (pressure being pushed back against the supercharger wheel when the throttle is closed shut) so it would be a must-do IMO. It was the very first mod I did on all my forced induction cars.

  3. #3
    Greenhulk Grasshopah (DRC) HallPass's Avatar
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    wait til other people reply, but im not exactly sure if it is necessary when you are running stock SC/stock boost.

    I think it would become more necessary when using a bigger SC wheel pushing more boost.

    don't take me up on this.. .... wait til others post that know this platform.. unlike me

  4. #4
    bm27's Avatar
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    one of my first mods strongly suggest it on my 08 fx sho the sprag clucth
    or whatever they call it went and the boat wouldnt go over 5500 rpms scared the crap out of me. ur always going to have back pressure without the bov

  5. #5
    Stop staring at my tits NJJer's Avatar
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    Any forced induction engine without a way to relive the pressure build-up when the throttle plate/s are closed is just a recipe for disaster. (short of a Roots or Twin Screw/Whipple type supercharger)

    I am shocked that Yamaha needed to save the extra $20 for a plastic valve that they would take this risk.

    Spring clutches and other types only can do so much and last so long. A little help here does go a long way.

    No need to get a $300 one. I can get "blow off" valves that are adjustable for a little over $100 and they work great. I know, I have had more than enough turbo cars in my time.

  6. #6
    hitman's Avatar
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    With the mods you listed I would probably add one. It can't hurt. And NJJer is right. You don't have to go with the expensive HKS. There are other that will work, but make sure it is a quality piece, and not some junk bosch plastic valve. If you're going to do it, do it right.

  7. #7
    Addicted Member 5001craig's Avatar
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    I installed the HKS BOV on mine along with the R & D Multiport Adapter and could definately hear the BOV working prior to installing the C3-11. To me that means it was relieving the pressure, helping to save the sprag clutch.

    I would recommend both items for ease of installation as well as workmanship.

    But the BOV got A LOT LOUDER when the new wheel was installed.

  8. #8
    32 Valves To Love! Racecar_Dave's Avatar
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    The more boost you run the louder the sound. Get a TurboXS RFL or TurboSMART Megasonic. Thatll give you the loudest sound at the lowest boost

  9. #9
    Addicted Member 5001craig's Avatar
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    Quote Originally Posted by Racecar_Dave View Post
    The more boost you run the louder the sound. Get a TurboXS RFL or TurboSMART Megasonic. Thatll give you the loudest sound at the lowest boost
    Personally, I wasn't really looking for sound. Just a little insurance.

  10. #10
    32 Valves To Love! Racecar_Dave's Avatar
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    I understand, but why not let everyone else at your riding spot know you have extra insurance? And that you mean business!

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