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techtalk:ref:oil06 [2019/05/25 02:22] – hippysmacktechtalk:ref:oil06 [2024/08/28 01:33] (current) – [77-Present Sportster Oil Pump Comparisons] hippysmack
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 ====== REF: Oiling & Lubrication ====== ====== REF: Oiling & Lubrication ======
  
-====== 77-Present Sportster Oil Pump Comparisons ======+====== 1977-Present Sportster Oil Pump Comparisons ======
 Links to more oil pump pics and dims in the Sportsterpedia; \\ Links to more oil pump pics and dims in the Sportsterpedia; \\
 [[techtalk:ih:oil03#oil_pump|77-85 Oil Pump]] in the IH section of the Sportsterpedia. \\ [[techtalk:ih:oil03#oil_pump|77-85 Oil Pump]] in the IH section of the Sportsterpedia. \\
 [[techtalk:evo:oil03|86-Present Oil Pump]] in the Evo section of the Sportsterpedia. \\ [[techtalk:evo:oil03|86-Present Oil Pump]] in the Evo section of the Sportsterpedia. \\
 +
 +====== Return to Feed Ratios ======
 +1977-1985 feed gerotors have the smallest volume and smallest of the gerotor pumps used on Sportsters. \\
 +1986-2006 feed gerotors have the same volume. \\
 +1977-1997 return gerotors have the same volume. \\
 +1998-2006 return gerotors have the same volume. \\
 +1977-2006 gerotors all have the same teeth profile (bodies changed OD but volume per height stayed the same). \\
 +2007-present are the tallest and also have a different teeth profile. \\
 +
 +  * **77-85 return to feed ratio app 2.78:1**
 +    * Return Height: .500", Feed Height: .180" 
 +  * **86-90 return to feed ratio app 1.89:1**
 +    * Return Height: .500", Feed Height: .265"
 +  * **91-97 return to feed ratio app 1.89:1**
 +    * Return Height: .500", Feed Height: .265"
 +  * **98-06 return to feed ratio app 2.64:1**
 +    * Return Height: .700", Feed Height: .265"
 +  * **07-up return to feed ratio app 4.25:1**
 +    * 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 =======
 With a 98 style gasket on the 79 pump, the gasket fits nice and snug as it should be. \\ With a 98 style gasket on the 79 pump, the gasket fits nice and snug as it should be. \\
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 |{{:techtalk:ref:oil:77_and_98_oil_pump_comparison.jpg?direct&300|}}|{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_1_by_hippysmack.jpg?direct&300|}}| |{{:techtalk:ref:oil:77_and_98_oil_pump_comparison.jpg?direct&300|}}|{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_1_by_hippysmack.jpg?direct&300|}}|
  
-The 79, 98 and 07 pumps were bolted to and outlined on the aluminum sheet. ((photos by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153&page=6)) \\+The 79, 98 and 07 pumps were bolted to and outlined on the aluminum sheet. ((photos by Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/194881-let-s-study-the-77-85-oil-pump-parts-and-changes-and-when/page6?t=2071153&page=6)) \\
 |{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:oil:77-98-07_oil_pump_comparison_1._by_hippysmack.jpg?direct&300|}}| |{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:oil:77_and_98_oil_pump_comparison_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:oil:77-98-07_oil_pump_comparison_1._by_hippysmack.jpg?direct&300|}}|
  
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-|  77-85 covers w/ feed hole in arm. ((photo by Hippysmack))  |  86-90 covers without the feed hole in the arm. ((photo by Hippysmack))  | +| L83 pump body and 86-90 cover. ((photo by jlv of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/196850-oil-pump-iron-1000-1979-bizarre#post4301658))  |  77-85 covers w/ feed hole in arm. ((photo by Hippysmack))  |  86-90 covers without the feed hole in the arm. ((photo by Hippysmack))  | 
-|{{:techtalk:ih:oil:77-85_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}|+|{{:techtalk:ref:oil:77-85_oil_pump_with_86-90_cover_by_jlv.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}|
  
 **Feed gerotor surface depth change**: \\ **Feed gerotor surface depth change**: \\

Trace: • EVO: Body Parts - Sub-01D • REF: Oiling & Lubrication • MiscRes: FSMs