Differences
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techtalk:ih:carb01p [2019/10/11 00:29] hippysmack [(B83K)] |
techtalk:ih:carb01p [2019/10/12 15:01] hippysmack [Keihin Butterfly Carb Identification] |
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| The chart on the [[techtalk:ih:carb01#sportster_keihin_carburetors_by_year_model|Basic carb information page]] has the factory jetting information for Sportsters. \\ | The chart on the [[techtalk:ih:carb01#sportster_keihin_carburetors_by_year_model|Basic carb information page]] has the factory jetting information for Sportsters. \\ | ||
| You may have to go up or down from there depending on what's already in your carb and your specific engine/A/C/exhaust setup. \\ | You may have to go up or down from there depending on what's already in your carb and your specific engine/A/C/exhaust setup. \\ | ||
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| + | Also, 76-78 Sportster carbs have a 38mm venture (measured at the smallest point near the throttle plate). \\ | ||
| + | 79-87 Sportster carbs have a 34mm venture. However, the carbs installed on BT's may be 38mm. \\ | ||
| + | To find the venture size of the one you have, cut a piece of cereal / kleenex box cardboard 34mm wide and insert it into the most narrow part of the venturi. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?p=4457592&highlight=keihin+bowl#post4457592)) \\ | ||
| + | Tight fit = 34 mm, loose fit = 38 mm. \\ | ||
| + | |||
| See the pics below for a visual confirmation of year model features. \\ | See the pics below for a visual confirmation of year model features. \\ | ||
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| Accelerator pump (27891-80). \\ | Accelerator pump (27891-80). \\ | ||
| ===== (B83H) ===== | ===== (B83H) ===== | ||
| - | Float bowl (27331-83) (B83H). \\ | + | Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ |
| Accelerator pump (27891-80). \\ | Accelerator pump (27891-80). \\ | ||
| Line 193: | Line 199: | ||
| Soft plug over the A/F mixture screw. \\ | Soft plug over the A/F mixture screw. \\ | ||
| Black plug over evaporative port. \\ | Black plug over evaporative port. \\ | ||
| - | Float bowl (27331-83) (B83H). \\ | + | Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ |
| Accelerator pump (27891-80). \\ | Accelerator pump (27891-80). \\ | ||
| Line 202: | Line 208: | ||
| Main jet 160, slow jet 52. \\ | Main jet 160, slow jet 52. \\ | ||
| Soft plug over the A/F mixture screw. \\ | Soft plug over the A/F mixture screw. \\ | ||
| - | Float bowl (27331-83) (B83H). \\ | + | Float bowl (27331-83) (B83H). Casting marks inside the bowl: 328:1 \\ |
| Accelerator pump (27891-80). \\ | Accelerator pump (27891-80). \\ | ||
| Black plug over evaporative port. \\ | Black plug over evaporative port. \\ | ||
