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techtalk:ih:engctl01 [2025/07/28 22:58]
– [Prestolite Electronic Ignition System] hippysmack |
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techtalk:ih:engctl01 [2025/07/28 22:58] (current)
– [Nosecone Ignition Seal] hippysmack |
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| **(1979)** Upgrade to the breaker point system in which the mechanical points are replaced by a breaker-less electronic ignition on the camshaft. Timer has a rotor with one small lobe and one large lobe and a sensor that sends signal to the control module on the back of the timer inner cover. Rotor is mounted on a mechanical flywheel centrifugal advance like a point cam would be in a breaker point system. The rotor's small lobe fires the front cylinder and the large lobe fires the rear cylinder. ((1959-1985 Clymer Sportster Repair Manual pg 225))1979 Ignition Module Assembly part number 32598-78 ((1979 HD Sportster Parts Catalog)). |
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===== Nosecone Ignition Seal ===== |
This is a steel shell radial shaft seal (HD# 11124) installed in the cam cover. \\ |
It surrounds and seals #2 cam when the cover is installed. Also used on 1986-2003 model Sportster cam covers. \\ |
Dims per XLForum member, Fizzle: \\ |
OD 1.570" (39.878mm) |
ID 1.050" (26.67mm) |
W 0.248" (6.2992mm) |
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Other brands include James (JGI-11124), Cometic (C9355), Athena (51-A210), Custom Chrome (54-043). \\ |
The rubber shell HD Genuine double lip version is part number (11124-DL). \\ |
Other brands include James (JGI-11124-DL). \\ |
**NOTE**: __SKF makes a radial shaft seal with a part number of 11124 but that IS NOT AN HD PART NUMBER__. \\ |
SKF 11124 IS TOO BIG TO FIT THE COVER and they don't show a compatible seal in their catalog for this application. \\ |
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HD Seal (11124): \\ |
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{{:techtalk:ih:engmech:1971-2003_nosecone_ignition_seal_11124_by_hippysmack.jpg?direct&400|}} ((photo by Hippysmack)) |
| ===== Magnavox Electronic Ignition Systems ===== |
| * . . . [[techtalk:ih:engctl01d|See more on the Magnavox Ignition System]] \\ |
