Differences
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techtalk:ref:oil05b [2019/07/20 15:48] hippysmack [REF: Oiling & Lubrication - Sub-05A] |
techtalk:ref:oil05b [2023/12/22 20:30] hippysmack [Running External Rocker Box Drains] |
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| There were no oil returns on the old Axtel big bore (or the day) cylinders. \\ | There were no oil returns on the old Axtel big bore (or the day) cylinders. \\ | ||
| So the oil return for the rocker boxes was piped externally. \\ | So the oil return for the rocker boxes was piped externally. \\ | ||
| - | If a windage tray was used, you could return the oil behind that (staying away from the flywheels). ((Racepres of the XLFORUM http://xlforum.net/forums/showthread.php?t=2002736)) \\ | + | If a windage tray was used, you could return the oil behind that (staying away from the flywheels). ((Racepres of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/sportster-motorcycle-drag-racing/187552-external-oil-return?t=2002736)) \\ |
| Bringing the oil under the baffle or windage tray is the classic way to do it. \\ | Bringing the oil under the baffle or windage tray is the classic way to do it. \\ | ||
| - | It's done to cut down on oil drag on the wheels (although I've never been able to prove a power increase). ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=2002736)) \\ | + | It's done to cut down on oil drag on the wheels (although I've never been able to prove a power increase). ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/sportster-motorcycle-drag-racing/187552-external-oil-return?t=2002736)) \\ |
| Rubbermount bikes don't have the issue since the oil drain holes dump into the cam chest. \\ | Rubbermount bikes don't have the issue since the oil drain holes dump into the cam chest. \\ | ||
| The outlet is in the case itself. \\ | The outlet is in the case itself. \\ | ||
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| Eliminates the entire need to pump it out of the motor. \\ | Eliminates the entire need to pump it out of the motor. \\ | ||
| - | You can also block the drain holes in the heads and add external drains so the oil can go into the cam chest through the cam cover. ((mac93 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2002736&page=2)) \\ | + | You can also block the drain holes in the heads and add external drains so the oil can go into the cam chest through the cam cover. ((mac93 of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/sportster-motorcycle-drag-racing/187552-external-oil-return/page2?t=2002736&page=2)) \\ |
| Pre-98 engine cases drain in the cam chest to the crankcase. \\ | Pre-98 engine cases drain in the cam chest to the crankcase. \\ | ||
| For those, you can also plug that drain and pipe the rocker box drains externally. \\ | For those, you can also plug that drain and pipe the rocker box drains externally. \\ | ||
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| See more on the different oil pumps [[techtalk:evo:oil03|HERE]] in the Evo section of the Sportsterpedia. \\ | See more on the different oil pumps [[techtalk:evo:oil03|HERE]] in the Evo section of the Sportsterpedia. \\ | ||
| - | {{:techtalk:ref:oil:external_rocker_box_drains_2_by_anachris.jpg?direct&300|}} ((photo by AnaChris of the XLFORUM http://xlforum.net/forums/showthread.php?t=2002736)) | + | {{:techtalk:ref:oil:external_rocker_box_drains_2_by_anachris.jpg?direct&300|}} ((photo by AnaChris of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/sportster-motorcycle-drag-racing/187552-external-oil-return?t=2002736)) |
| - | {{:techtalk:ref:oil:external_rocker_box_drains_1_by_anachris.jpg?direct&300|}} ((photo by AnaChris of the XLFORUM http://xlforum.net/forums/showthread.php?t=2002736)) \\ | + | {{:techtalk:ref:oil:external_rocker_box_drains_1_by_anachris.jpg?direct&300|}} ((photo by AnaChris of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/sportster-motorcycle-drag-racing/187552-external-oil-return?t=2002736)) \\ |
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