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Thread: swirl valve info please

  1. #1
    Regular Member wanna veccy's Avatar
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    Default swirl valve info please

    hi guys, due to my recent probs with swirl valve and me not having a clue what that is and what it does.
    i was just wandering if any one would be able to tell me, what it does?
    where it is on the car (i know it in manifold but if i look at the engine can i see it(a photo would be brill)?
    also are all the new replacements bigger like someone previously mentioned or are there different sizes.

    i know this is all a big ask but could do with knowing so when job is done i know what i am looking for incase i get fobbed off.

    once again big big thanks
    martin.

  2. #2
    Regular Member Ste's Avatar
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    Vehicle : Jaguar XF 3.0D V6

    Trim : Black

    Engine : 3.0D V6

    Year : 0000

    Default

    There was a thread recently with some good photo's

    The swirl valve basically opens the second inlet port at higher engine powers to make the air entering mix with the injected fuel better (the swirling effect of the air continues through the compression stroke and when the fuel is finally injected). When the engine is at relatively low speeds and loads, the valve is closed, so air only enters the cylinders via one inlet port. This increases low end torque. When it opens it allows both ports to be open, thus allowing easier air entry and greater swirl values of the air.

  3. #3
    Regular Member wanna veccy's Avatar
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    aaaaagh i see. any one else know any answers to the other questions?

  4. #4
    Regular Member kenp's Avatar
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    Vehicle : Vectra C


    Engine : 2.2 Direct

    Year : 2004

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    its part of the Inlet manifold (big black box in front of the engine)

    they have to change the manifold completly to change that walv.

  5. #5
    Full Member lizard's Avatar
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    mines going back to dealer next saturday to have one fitted under warranty. the cars a 55 plate sri with 9700 on clock, they said that was part of the problem as the engine not worn in completely.

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