Rotor Arm. Porsche 912 / 356 / 912E – Porsche Original Part

Porsche original part. This rotor is pressed against a carbon brush at the center terminal of the distributor cap, which is either connected to the ignition coil through the top and wired directly to the coil in HEI systems, or connected to the ignition coil via the center terminal in point ignition systems and remotely. The rotor is designed so that the center tab is electrically connected to its outer edge, so the voltage arriving at the center post travels through the carbon point to the outer edge of the rotor. As the camshaft rotates, the rotor rotates and its outer edge passes each of the internal plug terminals to fire each spark plug.

• Porsche 912E

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