What does "twinport" mean?

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    What does "twinport" mean?

    Probably a rediculous question. But I don't know much about car engines and I've signed up on here to learn more about my own car etc.

    I drive an 04 reg Corsa C SXi 1.4 16v Twinport.

    So what exactly does Twinport mean as far as my car is concerned?

    cheers in advance.

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    i dont have one so aint sure but think i heard it means that when on low revs it only uses 8v? something like that i think.... might b a loada sh1te tho so sorry in advance if wrong!

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    iv always wanted to no that aswell..................

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    Quote Originally Posted by totalitarian
    Probably a rediculous question. But I don't know much about car engines and I've signed up on here to learn more about my own car etc.

    I drive an 04 reg Corsa C SXi 1.4 16v Twinport.

    So what exactly does Twinport mean as far as my car is concerned?

    cheers in advance.
    TwinPort technology - twin intake ports with a choke closing one of the ports at low RPM, providing strong air swirl pattern for higher torque levels and better fuel economy.

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    Quote Originally Posted by liam0606
    TwinPort technology - twin intake ports with a choke closing one of the ports at low RPM, providing strong air swirl pattern for higher torque levels and better fuel economy.
    basically when your not accerating hard, you are using less petrol, due to not using all 16v, so you get better mpg


    Twinport is also slightly more powerfull than standard.

    1.2 is 75 bhp, 1.2 twinport is about 78-80 bhp

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    koool thanx

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    hey guys. i´ll help u with that prob. i searched a little bit, and found the exact defination of the producer (mother-company gmc):

    --------------------------------------------------------------------------

    Twinport Technology Improves Astra's Economic & Environmental Performance

    (Dec. 13, 2002) — Starting in Spring 2003, Twinport, the fuel-saving technology for smaller four-valve engines, will be used with the 1.6 ECOTEC engine for the first time. Variable inlet camshaft control and a high proportion of exhaust gas circulation in this engine, which is used successfully in millions of cars today, resulted in a 6% drop in fuel consumption.

    Twinport is recognized for efficiency and already meets the Euro 4 emission standard. Detailed optimization by Powertrain engineers led to a further 1% improvement in fuel consumption. This fuel-saving technology will also be available for other ECOTEC engines with displacements of 1.6 liters and in other model lines in the future.

    Twinport fits Opel's strategy of offering advanced technology at affordable prices. For example, the Astra 1.6 two-door hatchback (74 kW/100 hp) with manual gearbox, consumed only 7.0 liters per 100 kilometers through the entire MVEG test cycle. It now needs only 6.5 liters of unleaded premium gasoline per 100 kilometers with the 1.6 ECOTEC 76 kW (103 hp) engine.

    The Twinport principle is based on the ECOTEC four-cycle spark ignition engines and uses innovative methods to minimize the so-called throttle losses. These occur because the power output is governed by varying the fresh air supply to the inlet ports.
    In the new engines this induction resistor is skillfully reduced. At partial load, the four-cylinder engine receives up to 25% of its cylinder charge from previously burnt exhaust gas delivered through an additional line.

    A major advantage of Twinport technology results from the fact that the conventional three-way catalytic converter remains in tact. This sets it apart from stratified-charge direct gasoline injection, which works with lean mixtures and requires an additional
    catalytic converter for the oxides of nitrogen. In addition, retention of the inlet pipe fuel injection reduces technical complexity and, consequently, the cost to the customer. This favorable cost situation makes the Twinport principle particularly attractive for compact-class cars, as power output and efficient fuel consumption are fully maintained.

    --------------------------------------------------------------------------

    found it on www.gm.com (news & issues)

    hope i could help u with this. have fun with ur twinport-technology

    //corsa-check

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    Thanks for the help guys. My first and biggest enquiry solved!

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    come on oli...wheres you picture

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    yeah... i like twinport... uhhm...

    its 80 hk, its a little "quickie"

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    If you do a search you will find this has been posted many times before.

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