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techtalk:evo:oil03g [2021/03/31 07:03] hippysmack [Volume and Flow Comparison] |
techtalk:evo:oil03g [2024/01/05 03:34] (current) hippysmack |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| ====== EVO: Oiling & Lubrication - Sub-03G ====== | ====== EVO: Oiling & Lubrication - Sub-03G ====== | ||
| - | ====== Comparing the 03-06 and the 07 Style Oil Pumps ====== | + | ====== Comparing the 98 and the 07 Style Oil Pumps ====== |
| - | * Below is a collection of comparison pics between the (98-06 style pump) and the (07 and up style pump). Click on a pic to enlarge. | + | * Below is a collection of comparison pics between the (98-06 style pump parts) and the (07 and up style pump parts). Click on a pic to enlarge. |
| * The 98-06 pump and internals are all the same except for these [[techtalk:evo:oil03#oil_pump_-_complete_unit_part_numbers|known differences]]. | * The 98-06 pump and internals are all the same except for these [[techtalk:evo:oil03#oil_pump_-_complete_unit_part_numbers|known differences]]. | ||
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| ====== Volume and Flow Comparison ====== | ====== Volume and Flow Comparison ====== | ||
| - | See also this XLForum discussion starting around post #140: http://xlforum.net/forums/showthread.php?t=2078814&page=14 \\ | + | See also this XLForum discussion starting around post #140: https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/201713-1250-unhappiness-2020-edition/page14?t=2078814&page=14 \\ |
| + | [[http://www.sportsterpedia.com/doku.php/techtalk:ref:oil22p|Click Here]] to view calculated volumes of 1977-present Sportster oil pumps. \\ | ||
| The scavenge gerotors in the 07 oil pump are considerably taller than in 06-prior oil pumps which easily points to the 07 scavenge side pumping out more oil from the motor. \\ | The scavenge gerotors in the 07 oil pump are considerably taller than in 06-prior oil pumps which easily points to the 07 scavenge side pumping out more oil from the motor. \\ | ||
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| **Height of gerotors in general**: \\ | **Height of gerotors in general**: \\ | ||
| The height of the gerotors (feed or return respectively) was changed several times from the beginning of the use of the gerotor pump in 1977 to present Sportsters. \\ | The height of the gerotors (feed or return respectively) was changed several times from the beginning of the use of the gerotor pump in 1977 to present Sportsters. \\ | ||
| - | [[http://sportsterpedia.com/doku.php/techtalk:ref:oil06|Click Here]] to see 77-Present Sportster Oil Pump Comparisons in the REF section of the Sportsterpedia. \\ | + | [[techtalk:ref:oil06|Click Here]] to see 77-Present Sportster Oil Pump Comparisons in the REF section of the Sportsterpedia. \\ |
| (shows visual differences in height and OD of the different year gerotors) \\ | (shows visual differences in height and OD of the different year gerotors) \\ | ||
| Prior to 2007, the amount of oil the gerotors can carry was only "adjusted" by changing their height. The taller the gearset, the more oil you can cram between the gears. \\ | Prior to 2007, the amount of oil the gerotors can carry was only "adjusted" by changing their height. The taller the gearset, the more oil you can cram between the gears. \\ | ||
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| The wider tooth profile allows for more oil delivery. \\ | The wider tooth profile allows for more oil delivery. \\ | ||
| It's the area between the gearset teeth (inner and outer) that determines the amount of oil delivered no matter what the OD of the gearset is. \\ | It's the area between the gearset teeth (inner and outer) that determines the amount of oil delivered no matter what the OD of the gearset is. \\ | ||
| - | So the change in OD was a mechanical necessity. \\ | + | So the change in OD was more of a mechanical necessity flowing the same amount of oil as before the change. \\ |
| **Tooth Profile**: \\ | **Tooth Profile**: \\ | ||
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| However, due to the wider tooth profile, the MoCo was able to deliver nearly the same amount of oil with a thinner gerotor set. \\ | However, due to the wider tooth profile, the MoCo was able to deliver nearly the same amount of oil with a thinner gerotor set. \\ | ||
| In essence, the practice of changing oil volume now has a plan B (changing tooth profile). \\ | In essence, the practice of changing oil volume now has a plan B (changing tooth profile). \\ | ||
| + | However, the 07 feed gerotors do deliver slightly less feed oil than 86-06 pumps. \\ | ||
| - | The magic is there! That explains why the feed gerotors still keep their oil moving capacity in spite of them now having less height. ((xLoneRiderx of the XLFORUM http://xlforum.net/forums/showthread.php?t=2078814&page=16)) \\ | + | The magic is there! That explains why the feed gerotors still keep their oil moving capacity in spite of them now having less height. ((xLoneRiderx of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/201713-1250-unhappiness-2020-edition/page16?t=2078814&page=16)) \\ |
| The outer gerotors' 9 point star diameter is now larger, so the inner gerotor's 8 point star are too. \\ | The outer gerotors' 9 point star diameter is now larger, so the inner gerotor's 8 point star are too. \\ | ||
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| According to the drawing, the 2007 oil pump has a 7% decrease in feed flow and a 52% increase in scavenge flow over the 1998-2006 oil pump. \\ | According to the drawing, the 2007 oil pump has a 7% decrease in feed flow and a 52% increase in scavenge flow over the 1998-2006 oil pump. \\ | ||
| - | {{:techtalk:evo:oil:2006-2007_oil_pump_volume_compariison_by_xloneriderx.jpg?direct&800|}} ((drawing by xLoneRiderx of the XLFORUM http://xlforum.net/forums/showthread.php?p=5887052#post5887052)) \\ | + | {{:techtalk:evo:oil:2006-2007_oil_pump_volume_compariison_by_xloneriderx.jpg?direct&800|}} ((drawing by xLoneRiderx of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/201713-1250-unhappiness-2020-edition/page11#post4489346)) \\ |
| - | ====== Visual Differences and Dims ====== | + | |
| + | ====== Visual Differences and Dims ====== | ||
| * Dimensions shown below are approximate. The 98 pump shown below is used with some probable wear. The intention is to show major differences in the two pump versions only. | * Dimensions shown below are approximate. The 98 pump shown below is used with some probable wear. The intention is to show major differences in the two pump versions only. | ||
| * The outside of the pump bodies are visually the same except the 07 is slightly taller and the bottom cover has different casting numbers. | * The outside of the pump bodies are visually the same except the 07 is slightly taller and the bottom cover has different casting numbers. | ||
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| |{{:techtalk:evo:oil:98-07_oil_pump_comparison_14_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:98-07_oil_pump_comparison_14_by_hippysmack.jpg?direct&300|}}| | ||
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| |{{:techtalk:evo:oil:98-07_oil_pump_comparison_16_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-07_oil_pump_comparison_17_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-07_oil_pump_comparison_18_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:98-07_oil_pump_comparison_16_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-07_oil_pump_comparison_17_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-07_oil_pump_comparison_18_by_hippysmack.jpg?direct&300|}}| | ||
| | 98 and 07 oil pump internals ((photos by Hippysmack of the XLFORUM)) ||| | | 98 and 07 oil pump internals ((photos by Hippysmack of the XLFORUM)) ||| | ||
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| * The 98-06 pump body has two bumps inside to hold the separator plate in place with 2 separate bores for the two different O.D. gerotors. | * The 98-06 pump body has two bumps inside to hold the separator plate in place with 2 separate bores for the two different O.D. gerotors. | ||
