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328 GTS High Speed Whistle

Discussion in '308/328' started by Sundmaker, Apr 16, 2011.

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  1. Sundmaker

    Sundmaker Rookie

    May 26, 2009
    17
    New Orleans, LA
    #1 Sundmaker, Apr 16, 2011
    Ok, so I am a rookie Ferrari owner and sorry if this is a silly question, but with the top off, my 328 whistles when I hit 90 mph and above. I mean, its a really loud wind whistle, to the point where, I slow down because its sooooo loud. Anyone had this issue? Could it be the mirror? windshield leak?

    Just fishing....and all thoughts appreciated.

    Thanks,

    Trey
     
  2. PV Dirk

    PV Dirk F1 Veteran

    Jul 26, 2009
    5,401
    Ahwatukee, AZ
    #2 PV Dirk, Apr 16, 2011
    I'd try the car under same circumstances with top in place but windows down, then with windows up. Maybe isolate by one window down at a time. If it's exterior at all, trim, mirror, etc it will occur with the top in place. Also try with top off and windows up.
     
  3. maurice70

    maurice70 F1 Rookie

    Jan 25, 2004
    4,334
    Sydney
    Full Name:
    maurice T
    #3 maurice70, Apr 17, 2011
    This is quite coincidental..Today
    I went for a drive on the freeway in my GTS.The roof was off,it was approx 17 degC outside so I had the heater on only on the drivers side.I had the vent position switch set to open for the footwell vent.Anyway for the first hour of the trip I could hear this annoying whistle coming from the drivers side rear.Winding the windows down didnt change the noise.It ended up being that the drivers side footwell vent was closed as were the dash vents and the noise was air trying to escape through a closed vent.I opened the vent and the sound went away.
     
  4. jfortner

    jfortner Karting

    Apr 28, 2010
    177
    Lanexa, VA
    Full Name:
    Joe A Fortner
    #4 jfortner, Apr 17, 2011
    When I turn the AC fan up to high speed on my 328 it howls - noticeably.

    JAF

    Life is good; it's better if you are driving a Ferrari
     
  5. Sundmaker

    Sundmaker Rookie

    May 26, 2009
    17
    New Orleans, LA
    #5 Sundmaker, Apr 29, 2011
    Thanks for the suggestions. I drove it today, top on, top off, windows up, windows down, and even holding my hand around the side mirror. No luck. It still whistles like a tea pot over 85 mph. At 100, its painful. I'm pretty sure its coming from some point past the seats. I also think its exterior of the cabin. Several people have suggested that it could be the tailpipes, but the rpm's do not matter....it's speed. that is why I think its wind....side louvers? top spoiler?

    Dang this is frustrating!

    Thanks to all.

    Trey
     
  6. Fave

    Fave F1 Rookie

    Aug 12, 2010
    4,157
    Tarana
    Full Name:
    L. Ike Hunt
    #6 Fave, Apr 29, 2011
    Maybe it's the big grin you have when driving, all that air is passing through the gap in your teeth :)
     
  7. pad

    pad Formula 3

    Sep 30, 2004
    1,426
    Tequesta, FL
    Full Name:
    Paul Delatush
    #7 pad, Apr 29, 2011
    I had the same issue with my Jag. No matter what I did, I could not locate the source of the whistle. Drove me nuts for years. Then a rock cracked the windshield. With the new windshield, the whistle is gone. FWIW.
     
  8. Fave

    Fave F1 Rookie

    Aug 12, 2010
    4,157
    Tarana
    Full Name:
    L. Ike Hunt
    #8 Fave, Apr 30, 2011
    Guess if all fails you could try and throw rocks at your car lol.
     
  9. thecarreaper

    thecarreaper F1 World Champ
    Silver Subscribed

    Sep 30, 2003
    18,141
    Savannah
    #9 thecarreaper, Apr 30, 2011
    This is a great point. Look very, very close at the upper seal and around the windshield. If its torn, curled or deformed in any way, thats your noise.

    A .200 tall edge in the way of high speed air will create turbulence, and that will create the sound as an effect of the turbulence.

    The windshield does not have to leak, it still may be water tight, but any high, sharp edge in the airstream can cause this effect. Mach .925 teaches you stuff. :)
     
  10. doug328

    doug328 Formula 3

    Mar 11, 2004
    1,599
    The Space Coast, FL
    Full Name:
    Doug B
    #10 doug328, Apr 30, 2011
    A good point. Replaced that seal soon after I got my car, and have had it at speeds of over 120 with the top off and no nosie like you describe. Also there are rubber pads that the rear quarter louvers press against when closed to keep them from moving about, if they are missing, the louver could be moving enough to make the noise.
     

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