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Whats that sound those road rally cars make

  • 26-02-2012 11:43pm
    #1
    yammycat
    Registered Users, Registered Users 2 Posts: 445 ✭✭


    Like wrx and evos and the like, i dont drive so dont know anything about cars but i only hear this sound from these kind of cars, it may be when they are changing gear and it sounds like air escaping from a high pressure cylinder, like a loud pppssshhhhttt


Comments

  • #2
    Quazzie
    Registered Users, Registered Users 2 Posts: 29,314 ✭✭✭✭Quazzie


    Dump valve.


  • #3
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    WRC cars don't have dumpvalves.

    The chirping noise is the multi stage external wastegates which control the off throttle boost created by the antilag system.


  • #4
    CiniO
    Registered Users, Registered Users 2 Posts: 16,069 ✭✭✭✭CiniO


    Nissan doctor wrote: »
    WRC cars don't have dumpvalves.

    The chirping noise is the multi stage external wastegates which control the off throttle boost created by the antilag system.


    Jeysas...
    Before I read the above, I thought I don't have problems understanding English language anymore.


  • #5
    johngalway
    Closed Accounts Posts: 10,271 ✭✭✭✭johngalway


    Nissan doctor wrote: »
    WRC cars don't have dumpvalves.

    The chirping noise is the multi stage external wastegates which control the off throttle boost created by the antilag system.

    That's what Sir Humphrey would sound like had he been a mechanic.


  • #6
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    CiniO wrote: »
    Jeysas...
    Before I read the above, I thought I don't have problems understanding English language anymore.

    It was the shortest way I could think to write it without getting into a long winded answer.


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  • #7
    Ardennes1944
    Registered Users, Registered Users 2 Posts: 9,238 ✭✭✭Ardennes1944


    Its a sound thats all part of the fun :)


  • #8
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    Ardennes1944 wrote: »
    Its a sound thats all part of the fun :)


    I prefer the machine gun backfires from the exhaust myself:)


  • #9
    tuxy
    Closed Accounts Posts: 14,983 ✭✭✭✭tuxy


    Nissan doctor wrote: »
    I prefer the machine gun backfires from the exhaust myself:)

    Anti turbo lag system right? It destroys the turbo that why you normally only hear it on real rally cars that have a team that can afford to replace it every few races :)

    Give me a technical explanation of it please Nissan Doctor.


  • #10
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    tuxy wrote: »
    Anti turbo lag system right? It destroys the turbo that why you normally only hear it on real rally cars that have a team that can afford to replace it every few races :)

    It destroys turbo's that aren't built to take it alright. WRC turbo's rarely get replaced with new units. The antilag also doesn't create as much boost as the turbo is capable of creating when at full throttle.


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