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techtalk:ref:engmech05k [2021/07/26 05:21] hippysmack [Installing "Slobber Stoppers" (1991-1993 Models)] |
techtalk:ref:engmech05k [2023/12/22 14:52] (current) hippysmack [Parts] |
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| That alone should improve the condition some. \\ | That alone should improve the condition some. \\ | ||
| - | The umbrella valve hole is the one in the left picture below with 3 roughly oval shaped holes around the install hole in the corners of the middle rocker box. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?page=5&t=1958462)) \\ | + | The umbrella valve hole is the one in the left picture below with 3 roughly oval shaped holes around the install hole in the corners of the middle rocker box. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/181820-do-i-have-to-remove-heads-to-change-cams/page5?page=5&t=1958462)) \\ |
| (2 umbrella holes per middle box spacer, only 1 is used per cylinder on the each intake side as the box spacer is interchangeable front to rear) \\ | (2 umbrella holes per middle box spacer, only 1 is used per cylinder on the each intake side as the box spacer is interchangeable front to rear) \\ | ||
| The 3 oval shaped holes are where air/oil mist enters the separation chamber while lifting the umbrella up. \\ | The 3 oval shaped holes are where air/oil mist enters the separation chamber while lifting the umbrella up. \\ | ||
| The drain back hole is the tiny little hole to the right of the sideways 13 in the picture. \\ | The drain back hole is the tiny little hole to the right of the sideways 13 in the picture. \\ | ||
| Oil is also pulled down that tiny hole by vacuum on each upstroke. \\ | Oil is also pulled down that tiny hole by vacuum on each upstroke. \\ | ||
| - | {{:techtalk:evo:engmech:rocker_box_mod_by_aswracing.jpg?direct&300|}} ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?page=5&t=1958462)) {{:techtalk:ref:engmech:rocker_box_breather_chamber_pic1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | + | {{:techtalk:evo:engmech:rocker_box_mod_by_aswracing.jpg?direct&300|}} ((photo by aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/181820-do-i-have-to-remove-heads-to-change-cams/page5?page=5&t=1958462)) {{:techtalk:ref:engmech:rocker_box_breather_chamber_pic1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ |
| - | **The Slobber Stoppers are an attempt to (possibly help) curtail the issue of puking oil out the breathers**. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?page=5&t=1958462)) \\ | + | **The Slobber Stoppers are an attempt to (possibly help) curtail the issue of puking oil out the breathers**. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/181820-do-i-have-to-remove-heads-to-change-cams/page5?page=5&t=1958462)) \\ |
| However, the first answer would be to address other known factors for wet sumping. \\ | However, the first answer would be to address other known factors for wet sumping. \\ | ||
| The rocker box middles use the same casting for both the front and rear cylinder. And there's a facility for the umbrella valve on both ends of each middle spacer. \\ | The rocker box middles use the same casting for both the front and rear cylinder. And there's a facility for the umbrella valve on both ends of each middle spacer. \\ | ||
| Line 46: | Line 46: | ||
| * Instructions | * Instructions | ||
| - | The measurements in the drawing below should considered (rough dims) as neither of the barrels included in that kit were identical. ((salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) \\ | + | The measurements in the drawing below should considered (rough dims) as neither of the barrels included in that kit were identical. ((salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) \\ |
| (click on a pic to enlarge): \\ | (click on a pic to enlarge): \\ | ||
| - | {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic3_by_salmanmr.jpg?direct&300|}} ((Drawing by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) \\ | + | {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic3_by_salmanmr.jpg?direct&300|}} ((Drawing by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) \\ |
| - | {{:techtalk:ref:engmech:slobber_stoppers_pic1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) {{:techtalk:ref:engmech:slobber_stoppers_pic2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) \\ | + | {{:techtalk:ref:engmech:slobber_stoppers_pic1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) {{:techtalk:ref:engmech:slobber_stoppers_pic2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) \\ |
| - | {{:techtalk:evo:engmech:rocker_box_mod_3_by_toe.jpg?direct&300|}} ((toe of the XLFORUM http://xlforum.net/forums/showthread.php?p=4641942#post4641942)) {{:techtalk:evo:engmech:rocker_box_mod_2_by_toe.jpg?direct&300|}} ((toe of the XLFORUM http://xlforum.net/forums/showthread.php?p=4641942#post4641942)) | + | {{:techtalk:evo:engmech:rocker_box_mod_3_by_toe.jpg?direct&300|}} ((toe of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/159043-bestest-rocker-gasket-set-needed#post3380382)) {{:techtalk:evo:engmech:rocker_box_mod_2_by_toe.jpg?direct&300|}} ((toe of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/159043-bestest-rocker-gasket-set-needed#post3380382)) |
| \\ | \\ | ||
| Below are app. dims of one of the barrels in this kit taken by XLForum member, salmanmr. \\ | Below are app. dims of one of the barrels in this kit taken by XLForum member, salmanmr. \\ | ||
| Note: The barrels in this kit were not identical. \\ | Note: The barrels in this kit were not identical. \\ | ||
| - | {{:techtalk:ref:engmech:slobber_stopper_dim1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) {{:techtalk:ref:engmech:slobber_stopper_dim2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) \\ | + | {{:techtalk:ref:engmech:slobber_stopper_dim1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) {{:techtalk:ref:engmech:slobber_stopper_dim2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) \\ |
| ====== Installation ====== | ====== Installation ====== | ||
| Pics of the instructions: (click on a pic to enlarge). Also see other commentary below: \\ | Pics of the instructions: (click on a pic to enlarge). Also see other commentary below: \\ | ||
| - | {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM http://xlforum.net/forums/showthread.php?p=5906708#post5906708)) \\ | + | {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic1_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) {{:techtalk:ref:engmech:slobber_stoppers_instructions_pic2_by_salmanmr.jpg?direct&300|}} ((Photo by salmanmr of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/24593-another-oil-mist-problem-slobber-stoppers/page2#post4515537)) \\ |
| ===== Tapping the Holes for the Barrels ===== | ===== Tapping the Holes for the Barrels ===== | ||
| Line 111: | Line 111: | ||
| (another way to keep from having to grind the cover) \\ | (another way to keep from having to grind the cover) \\ | ||
| {{:techtalk:ref:engmech:rocker_box_breather_chamber_pic2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | {{:techtalk:ref:engmech:rocker_box_breather_chamber_pic2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | ||
| - | |||
| ===== Clearancing the Barrel(s) (if needed) ===== | ===== Clearancing the Barrel(s) (if needed) ===== | ||
| Line 120: | Line 119: | ||
| "Measure twice / cut once" so you don't take too much off the barrel though. \\ | "Measure twice / cut once" so you don't take too much off the barrel though. \\ | ||
| Clean the barrel of all debris and do the test fit again. Make sure the .015" clearance is there now. Repeat if needed. \\ | Clean the barrel of all debris and do the test fit again. Make sure the .015" clearance is there now. Repeat if needed. \\ | ||
| - | |||
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| - | |||
| ===== Clearancing the Cover (if needed) ===== | ===== Clearancing the Cover (if needed) ===== | ||
| Line 149: | Line 144: | ||
| Enlarging the hole, especially too much, will allow vacuum to drain the oil faster, which gives more time to suck in air before piston direction changes again. \\ | Enlarging the hole, especially too much, will allow vacuum to drain the oil faster, which gives more time to suck in air before piston direction changes again. \\ | ||
| - | You could first try and chamfer the umbrella hole to 60º (included angle) countersink bit and not drill out the drainback hole. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?page=5&t=1958462)) \\ | + | You could first try and chamfer the umbrella hole to 60º (included angle) countersink bit and not drill out the drainback hole. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/181820-do-i-have-to-remove-heads-to-change-cams/page5?page=5&t=1958462)) \\ |
| - | However, to the extent the drain back hole is enlarged, it bypasses the umbrella valve back into the boxes. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?page=5&t=1958462)) \\ | + | However, to the extent the drain back hole is enlarged, it bypasses the umbrella valve back into the boxes. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/181820-do-i-have-to-remove-heads-to-change-cams/page5?page=5&t=1958462)) \\ |
| Maybe 1/8" isn't enough to cause an issue according to the makers of Slobber Stoppers. \\ | Maybe 1/8" isn't enough to cause an issue according to the makers of Slobber Stoppers. \\ | ||
| But inhalation/exhalation is what carries oil out the breathers so you don't want to bypass it any more than necessary. \\ | But inhalation/exhalation is what carries oil out the breathers so you don't want to bypass it any more than necessary. \\ | ||
| Line 156: | Line 151: | ||
| And with this mod being undo-able by swapping the front and rear middles, you have a safety net in case something goes wrong. \\ | And with this mod being undo-able by swapping the front and rear middles, you have a safety net in case something goes wrong. \\ | ||
| - | **Another suggestion is to enlarge the tiny oil drain from ~.070" to .09375" along with the threaded insert oil standoffs**. ((toe of the XLFORUM http://xlforum.net/forums/showthread.php?p=4641942#post4641942)) ((http://xlforum.net/forums/showthread.php?t=1703706&page=2)) \\ | + | **Another suggestion is to enlarge the tiny oil drain from ~.070" to .09375" along with the threaded insert oil standoffs**. ((toe of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/159043-bestest-rocker-gasket-set-needed#post3380382)) ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/159043-bestest-rocker-gasket-set-needed/page2?t=1703706&page=2)) \\ |
| Slightly enlarging the little hole lets the oil drain back easier. Air that enters this oval(ish) chamber has to go somewhere. \\ | Slightly enlarging the little hole lets the oil drain back easier. Air that enters this oval(ish) chamber has to go somewhere. \\ | ||
| Line 164: | Line 159: | ||
| ===== Install the Rocker Boxes ===== | ===== Install the Rocker Boxes ===== | ||
| Before installing the rocker boxes back on the motor, make sure they are clean from all dirt, debris, shavings etc. \\ | Before installing the rocker boxes back on the motor, make sure they are clean from all dirt, debris, shavings etc. \\ | ||
| - | It won't hurt to spray them down with carb cleaner etc. before installing the umbrellas. The instructions say to install new umbrellas. \\ | + | It won't hurt to spray them down with carb cleaner etc. before installing the umbrellas. The instructions say to install new umbrellas anyway. \\ |
| Make sure both the umbrellas and their now counterpart Slobber Stoppers goes on the intake side on each cylinder. \\ | Make sure both the umbrellas and their now counterpart Slobber Stoppers goes on the intake side on each cylinder. \\ | ||
| Visually inspect that either gasket does not pinch or pooch out after you tighten up the cover bolts. \\ | Visually inspect that either gasket does not pinch or pooch out after you tighten up the cover bolts. \\ | ||
| Line 175: | Line 170: | ||
| If there are any air leaks around the cover bolts, even with the Slobber Stoppers added, you may still get oil out the breather vent(s). \\ | If there are any air leaks around the cover bolts, even with the Slobber Stoppers added, you may still get oil out the breather vent(s). \\ | ||
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| \\ | \\ | ||
