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techtalk:evo:engctl01 [2019/08/07 01:59] ixl2relax [Electronic Ignition Systems] |
techtalk:evo:engctl01 [2019/09/01 16:11] hippysmack [VOES - Vacuum-Operated Electric Switch] |
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| ===== VOES - Vacuum-Operated Electric Switch ===== | ===== VOES - Vacuum-Operated Electric Switch ===== | ||
| + | ===== Sub-Documents ===== | ||
| + | * [[techtalk:evo:elec01a|Dissecting the Voes]] | ||
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| * The VOES was first installed on Sportsters in 1983 (and used on most models thru 2003). The unit senses intake manifold vacuum at the carburetor and requests that the Ignition Control Module (ICM) switches between one of two different spark advance curves. The switch is closed at high vacuum operation, utilizing a more advanced spark curve and it is open at low vacuum operation, utilizing a less advanced (retarded) spark curve to minimize engine knock and still maintain performance. The VOES is installed above the intake manifold. ((1959-1985 Clymer Sportster Repair Manual pg 230)) | * The VOES was first installed on Sportsters in 1983 (and used on most models thru 2003). The unit senses intake manifold vacuum at the carburetor and requests that the Ignition Control Module (ICM) switches between one of two different spark advance curves. The switch is closed at high vacuum operation, utilizing a more advanced spark curve and it is open at low vacuum operation, utilizing a less advanced (retarded) spark curve to minimize engine knock and still maintain performance. The VOES is installed above the intake manifold. ((1959-1985 Clymer Sportster Repair Manual pg 230)) | ||
