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The Duraspark II is a Ford electronic ignition system. Ford Motor Company began using electronic ignitions in 1973 with the Duraspark electronic ignition system and introduced the Duraspark II system in 1976. The biggest change, apart from the control box redesign, was the large distributor cap to handle the increased spark energy. ==Description== Ford used several models over the years. They were coded by the color of the plastic wire strain relief, or "grommet" as it's most often called, in order to make them easy to identify. In addition to the color-coding the modules may have a key way molded into the electrical connectors to prevent accidental use in the wrong vehicle. The system consists of a magnetic reluctor and pickup in the distributor, and an ignition module to trigger the coil. Typically, Duraspark II distributors have both mechanical and vacuum advance mechanisms. Certain 1981-83 models used the EEC-III system. This system uses a Dura-Spark III module (Brown grommet where wires emerge) and a Dura-Spark II ignition coil. A resistance wire is used in the primary circuit. The distributors in EEC-III (and later) systems eliminate conventional mechanical and vacuum advance mechanisms. All timing is controlled by the engine computer, which is capable of firing the spark plug at any point within a 50 degree range depending on calibration. This increased spark capability requires greater separation of adjacent distributor cap electrodes to prevent cross-fire, another reason for its large-diameter distributor cap. This system is very similar to the systems used at MSD. As a matter of fact, MSD used the Duraspark during R&D. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Duraspark」の詳細全文を読む スポンサード リンク
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