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techtalk:ih:engctl01 [2020/08/25 05:20] ixl2relax [Setting Ignition Timing] |
techtalk:ih:engctl01 [2021/09/16 02:58] hippysmack [Timing Advance] |
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| - | ====== VOES - Vacuum-Operated Electric Switch ====== | + | ====== Engine Control Related Components ====== |
| - | * . . . [[techtalk:ih:engctl01d#voes_-_vacuum-operated_electric_switch|See more on the Voes Switch]] | + | ===== Sub-Documents ===== |
| + | * [[techtalk:ih:engctl01d#voes_-_vacuum-operated_electric_switch|See more on the Voes Switch]] | ||
| + | * [[techtalk:ih:engctl01#voes_-_vacuum-operated_electric_switch|See Testing the VOES Operation]]. | ||
| + | * [[techtalk:ih:engctl01f|Pics and information on Ironhead Coils and Bracketry]]. | ||
| + | \\ | ||
| + | ===== VOES - Vacuum-Operated Electric Switch ===== | ||
| * The computerized, microprocessor ignition module is programmed with two spark advance curves to meet varying engine loads. The system includes a vacuum operated electric switch (VOES). ((HD Service Bulletin #M-856 dated August 6, 1982)) | * The computerized, microprocessor ignition module is programmed with two spark advance curves to meet varying engine loads. The system includes a vacuum operated electric switch (VOES). ((HD Service Bulletin #M-856 dated August 6, 1982)) | ||
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| - | ====== Coil ====== | + | ===== Spark Coil ===== |
| **Coil Mix-up on 1973-1974 Models** | **Coil Mix-up on 1973-1974 Models** | ||
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| | 1980-1984 | 31609-80 | | | 1980-1984 | 31609-80 | | ||
| |1985 | 31614-83A | | |1985 | 31614-83A | | ||
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| \\ | \\ | ||
| - | ====== Spark Plugs ====== | + | ===== Spark Plugs ===== |
| The HD plug number corresponds to the recommended heat range of the plug. \\ | The HD plug number corresponds to the recommended heat range of the plug. \\ | ||
| HD 4 represents a spark plug with a heat range number of "4". \\ | HD 4 represents a spark plug with a heat range number of "4". \\ | ||
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| ==== Timing Advance ==== | ==== Timing Advance ==== | ||
| ^ ^Ign. Retard ((57-69 HD Sportster FSM pg 3A-11)) ((70-78 HD Sportster FSM pg 3-1)) ((79-85 HD Sportster FSM pg 3-3))^Ign. Advance^ | ^ ^Ign. Retard ((57-69 HD Sportster FSM pg 3A-11)) ((70-78 HD Sportster FSM pg 3-1)) ((79-85 HD Sportster FSM pg 3-3))^Ign. Advance^ | ||
| - | |**57-70**|15° (5/64") BTDC)|45° (11/16” BTDC)| | + | |**57-71**|15° (5/64") BTDC)|45° (11/16” BTDC)| |
| - | |**71-72**|10° (1/32”) BTDC)|40° (17/32” BTDC)| | + | |**72-79**|10° (1/32”) BTDC)|40° (17/32” BTDC)| |
| + | |Using Mechanical Advance mechanism = 30° range||| | ||
| + | |Static Timing is set with Flywheel at Full Advance Mark||| | ||
| ^ ^Ign. Retard^Idle Advance^Full Advance ((79-85 HD Sportster FSM pg 3-3))^ | ^ ^Ign. Retard^Idle Advance^Full Advance ((79-85 HD Sportster FSM pg 3-3))^ | ||
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| ^ ^Startup Advance^Fast Idle Advance^1800-2800 RPM ((79-85 Sportster FSM pg 3-3))^ | ^ ^Startup Advance^Fast Idle Advance^1800-2800 RPM ((79-85 Sportster FSM pg 3-3))^ | ||
| |**83-85**|10° (before TDC)|40° (before TDC)|55° (before TDC)| | |**83-85**|10° (before TDC)|40° (before TDC)|55° (before TDC)| | ||
| + | |Using Electronic Module (computerized) allows calculating a wide range of advance spark timing|||| | ||
| + | |Static Timing is set with Flywheel at TDC Mark - Used as a reference to calculate needed advance|||| | ||
| ==== Points Gap and Trigger Sensor Gap ==== | ==== Points Gap and Trigger Sensor Gap ==== | ||
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| Install the clear plug into the timing hole. \\ | Install the clear plug into the timing hole. \\ | ||
| It should be very near but not touching the flywheel. (go in until you touch the wheel and back off a 1/8-1/4 turn). | It should be very near but not touching the flywheel. (go in until you touch the wheel and back off a 1/8-1/4 turn). | ||
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| + | \\ | ||
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| + | The OEM Timing Rotor used for electronic ignitions on 1980-82 models is 32401-80 (Silver color). | ||
| + | |||
| + | For 1983-later, the OEM Timing Rotor is 32402-83 (Gold color). This later version is usually also used for aftermarket nosecone electronic ignitions installed in Ironhead models. | ||
| + | |||
| + | | Example of timing cup window positions per piston positions. (Crane HI-4 on 73 model) ((photos by vivisix of the XLFORUM, labeled by Hippysmack, http://xlforum.net/forums/showthread.php?t=323376&page=3)) || | ||
| + | |{{:techtalk:ih:engctl:timing_window-piston_position_1_by_vivisix.jpg?direct&300|}}|{{:techtalk:ih:engctl:timing_window-piston_position_2_by_vivisix.jpg?direct&300|}}| | ||
