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techtalk:ref:oil06 [2021/06/30 07:30] hippysmack [Return to Feed Ratios] |
techtalk:ref:oil06 [2022/06/24 00:37] hippysmack [Return hole in the "duck bill"] |
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* Return Height: .850", Feed Height: .200" | * Return Height: .850", Feed Height: .200" | ||
+ | ====== Return hole in the "duck bill" ====== | ||
+ | The size of the crankcase oil inlet hole inside the duck bill changed a couple times. \\ | ||
+ | 1977-1990 return inlet hole ID = 0.250" \\ | ||
+ | 1991-1997 return inlet hole ID = 0.280" \\ | ||
+ | 1998-Present return inlet hole ID = 0.350" \\ | ||
+ | |||
+ | {{:techtalk:ref:oil:1977-present_sportster_oil_pump_return_inlet_id_by_hippysmack.jpg?direct&400|}} \\ | ||
====== Comparing 77-85, 98-06 and 07 and up Pumps ======= | ====== Comparing 77-85, 98-06 and 07 and up Pumps ======= |