Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Last revision Both sides next revision | ||
|
techtalk:ref:engmech05i [2020/10/05 16:12] hippysmack [79-85 Breather Vent Mod - Adding a Secondary Vent Hose at 6:00 Position] |
techtalk:ref:engmech05i [2020/10/08 15:18] hippysmack [79-85 Breather Vent Mod - Adding a Secondary Vent Hose at 6:00 Position] |
||
|---|---|---|---|
| Line 13: | Line 13: | ||
| * Older bikes were originally plumbed into the A/C from a vent in the 6:00 position with a metal tube as a vent dumping to atmosphere. ((doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?p=5786300)) \\ It would mist a small amount of oil while riding but not a major oil slick. | * Older bikes were originally plumbed into the A/C from a vent in the 6:00 position with a metal tube as a vent dumping to atmosphere. ((doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?p=5786300)) \\ It would mist a small amount of oil while riding but not a major oil slick. | ||
| * 79-up Ironheads can benefit from removing the 6 o'clock plug from the cover and adding an additional breather hose there. \\ It is said to allow the crankcase pressure to evacuate faster, resulting in the motor being a little more free-revving. \\ A side benefit is that it will largely eliminate the "oil in the air cleaner" syndrome, assuming the original breather is left in place. \\ You can terminate the extra breather hose under the engine. However, it will drip a spot or two of oil there when parked or after a "spirited" ride. | * 79-up Ironheads can benefit from removing the 6 o'clock plug from the cover and adding an additional breather hose there. \\ It is said to allow the crankcase pressure to evacuate faster, resulting in the motor being a little more free-revving. \\ A side benefit is that it will largely eliminate the "oil in the air cleaner" syndrome, assuming the original breather is left in place. \\ You can terminate the extra breather hose under the engine. However, it will drip a spot or two of oil there when parked or after a "spirited" ride. | ||
| - | * In the pic below, you can see where the oil normally drains back into the engine. \\ Air and oil mist (oil that gets past the oil slinger on the generator) gets blown into the red valve. \\ In the cavity behind the reed, oil drops out of suspension and drains back. \\ At the same time, the air is purged out the vent hose. | + | * In the pic below, you can see where the oil normally drains back into the engine. \\ Air and oil mist (oil that gets past the oil slinger on the generator) gets blown into the reed valve. \\ In the cavity behind the reed, oil drops out of suspension and drains back. \\ At the same time, the air is purged out the vent hose. |
| * **Considerations**: | * **Considerations**: | ||
