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Thread: Swirl flaps, removal?

  1. #1
    Regular Member Derek Mc's Avatar
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    Default Swirl flaps, removal?

    An Article from BMW granted but based on the now infamous swirl flaps issue.

    Food for thought isn't it if we can simply eliminate them?

    http://www.pmwltd.co.uk/swirl_flaps.pdf

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    Quote Originally Posted by Derek Mc View Post
    An Article from BMW granted but based on the now infamous swirl flaps issue.

    Food for thought isn't it if we can simply eliminate them?

    http://www.pmwltd.co.uk/swirl_flaps.pdf

    I believe you could remove them - take the manifold off and remove the flaps themselves (not the bearings and spindles). As long as the actuator/drive module is able to move the ECU will think they are working. So I believe anyway.

    Alternatively if what I have heard about the JTD engines is true then the removal through the ECU is possible.

    Gazza4

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    reading the article it strikes me that

    a) the bmw manifold is much easier to get at and off than ours

    b) that engine performance should not be affected.....is that right.... i would have thought it would otherwise why are they there?????

    c) i wonder how easy it would be to get billeted aluminium blanks for our manifolds >> i guess the point is where would they attach to for on the top, i can't see how we could attach without drilling into the manifold top.?

    food for thought

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    Quote Originally Posted by mparks8590 View Post
    reading the article it strikes me that

    a) the bmw manifold is much easier to get at and off than ours

    b) that engine performance should not be affected.....is that right.... i would have thought it would otherwise why are they there?????

    c) i wonder how easy it would be to get billeted aluminium blanks for our manifolds >> i guess the point is where would they attach to for on the top, i can't see how we could attach without drilling into the manifold top.?

    food for thought
    As said the engine will breath better at lower rpms buit it will smoke more.

    You would need to keep the spindal for swirl flap 3 as that is the master one on the CDTI's.

    Gazza4

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    Quote Originally Posted by Derek Mc View Post
    An Article from BMW granted but based on the now infamous swirl flaps issue.

    Food for thought isn't it if we can simply eliminate them?

    http://www.pmwltd.co.uk/swirl_flaps.pdf
    That's an excellent piece of detective work there Derek.Although,like it has already ben said,the 1.9 manifold is more difficult to remove,if your doing it yourself,why go to the expense of replacing the whole manifold and actuator when you could simply remove the flaps and blank them off?.It really is a genuine alternative and food for thought.(Several problems eliminated in one go!).Result.FELIXX.

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    i guess as long as the actuator could move, it would still be ok irrespective of its attachement to the swirl mechanism, it can be that clever to know the swirl isn't there......

    so i reckon you might be able to blank all 4 if you're careful providing the actuator can make its desired progress


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    Quote Originally Posted by mparks8590 View Post
    i guess as long as the actuator could move, it would still be ok irrespective of its attachement to the swirl mechanism
    Exactly what I said.

    Gazza4

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    it probably alters mixture of air/diesel relative to position of swirl flaps will have to be bourne in mind
    Plasma's Tech2 services are now partially open and able to provide services



    Come Join our new forum Insignia Owners.com for all your Insignia chat and needs

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    Quote Originally Posted by plasma View Post
    it probably alters mixture of air/diesel relative to position of swirl flaps will have to be bourne in mind
    Tbh m8 the engine functions fine if the rod is off so I believe as long as the drive module is still present it is happy enough.

    Like I say I have heard the JTD engines don't have the swirl flaps according to the diesel specialist. If that is true, then if the drive module could be disabled via tech2. Should this be the case and it can be disabled, then for anyone who needs to replace their manifold it could be possible to replace it with a the JTD one. Hence no mutilation of the manifold is needed.

    However I wouldn't be surprised if they couldn't be tech2'd, as the flaps are normally shut at lower rpms, the drive module is required to 'open' them. My point here is the there may be no logical reason for vauxhall having the software to disable them, if they do not have a manifold which is designed without them.

    Gazza4

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    Quote Originally Posted by Gazza4 View Post

    Like I say I have heard the JTD engines don't have the swirl flaps according to the diesel specialist.
    Nope! They still have them.

    http://www.honestjohn.co.uk/carbycar...6/?section=bad

    Fiats, Alfa's, Lancia's etc all have them on the 16 valve engine.

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