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Thread: brand new OPC Z20LEH - dump valve sound

  
  1. #1
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    brand new OPC Z20LEH - dump valve sound

    Hi !

    I'm new here !

    I have a 20 days old ASTRA OPC (Z20LEH) that reached 3500 Kms already.

    When the car was below 1000 Kms there was no sound at all when changed speeds, then I begun to notice a sound like "whuh! everytime changed speed over 2000rpm's in the right side of the cabin but now the sound changed a little bit and sounds like "tsswhuh !" but little bit louder.

    Is this normal ths change of sound ?????? I'll apreciate your information.

    Thanks

    Ctzen

    PS: My car is sold as Chevrolet in my country with different front mask, take a look here :

    http://www.concursofancymusic.com/fotosmap/astra1.jpg
    http://www.concursofancymusic.com/fotosmap/astra3.jpg
    http://www.concursofancymusic.com/fotosmap/astra5.jpg

  2. #2
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    wayneGSI's Avatar
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    not sure on the sound, but it may just be the std D/V

    welcome to the site mate

    like the car with that bumper on it

    where abouts are you from?
    Astra GSi Turbo
    dap-performance.co.uk
    Live in the East Midlands?

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    Quote Originally Posted by wayneGSI View Post
    not sure on the sound, but it may just be the std D/V

    welcome to the site mate

    like the car with that bumper on it

    where abouts are you from?
    Yes, I guess is the standard dump valve.. but, is it normal that when the car was brand new it didn't sound but now is a noticeable sound ?

    I'm from Chile.

    Thanks !

    Citizen

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    wayneGSI's Avatar
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    do you drive it harder now its abit older and more miles on it?
    cause that could cause you to hear it more
    Astra GSi Turbo
    dap-performance.co.uk
    Live in the East Midlands?

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    sriturbo's Avatar
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    prob just with it being run in a little bit.

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    Gnasher's Avatar
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    The VXR's (Same engine) do that here to.

    It is at its worst if you boot it from tickover and then quickly lift the accelerator at about 2000-3000 rpm.

    Mine does the same so I wouldn't worry too much!
    2006 Astra VXR on 19's in Arden Blue
    ExhaustsUK Catback, Eibach Sportlines, DS Ultima, Roose hose kit, Forge recirculating dump valve, Full self modded SMD conversion

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    Quote Originally Posted by Gnasher View Post
    The VXR's (Same engine) do that here to.

    It is at its worst if you boot it from tickover and then quickly lift the accelerator at about 2000-3000 rpm.

    Mine does the same so I wouldn't worry too much!
    Gnasher,

    Posted same question on another Astra forum and found this sound is not exactly from the DV but from the effect of having the vacum pipe off.
    According specialists it would harm the turbo in the long term.
    Please read here :

    http://www.opelownersforum.co.za/for...8893706cd48cd7

    Cheers

    Citizen

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