Differences

This shows you the differences between two versions of the page.

--- techtalk:evo:oil02 [2022/09/05 05:16]
hippysmack
+++ techtalk:evo:oil02 [2024/02/04 18:50]
hippysmack removed
@@ Line 2: / Line 2: @@
 ====== EVO: Oiling & Lubrication ======
 ====== Engine Oil Routes ======
-**Oil Paths**: \\
-Click on a drawing to enlarge: \\
-|  86-90 engines ((drawing by Hippysmack))  |  91 engines ((drawing by Hippysmack))  |
-|{{:techtalk:evo:oil:86-90_sportster_feed-return_oil_paths_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91_sportster_feed-return_oil_paths_by_hippysmack.jpg?direct&300|}}|
-| 92-97 engines ((drawing by Hippysmack))  |  98-03 engines ((drawing by Hippysmack))  | 04 and Up XL engines ((drawing by Hippysmack))  |
-|{{:techtalk:evo:oil:92-97_sportster_feed-return_oil_paths_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-03_sportster_feed-return_oil_paths_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:04_and_up_sportster_feed-return_oil_paths_by_hippysmack.jpg?direct&300|}}|
-====== Oil Passages From The Filter Pad ======
-Below are different cam chest pics showing the oil passages from the filter pad. \\
-|86 Cam Chest ((photo by Mini_blitz of the XLFORUM http://xlforum.net/forums/showthread.php?t=1974615&page=2))|
-|{{:techtalk:evo:oil:86_cam_chest_by_mini_blitz.jpg?direct&300|}}|
-|1995 Cam Chest ((photo by Johnny Wolf of the XLFORUM http://xlforum.net/forums/showthread.php?t=525868))|1995 Cam Chest ((photo by Narley of the XLFORUM http://xlforum.net/forums/showthread.php?t=190859))|
-|{{:techtalk:ref:tools:gearcase_screw_holder_by_johnny_wolf.jpg?direct&300|}}|{{:techtalk:evo:oil:1996_cam_chest_by_narley.jpg?direct&300|}}|
-|1998 Cam Chest ((photo by EvIL sTevE of the XLFORUM http://xlforum.net/forums/showthread.php?t=1637848))|1999 Cam Chest ((photo by vh5150 of the XLFORUM))|2000 Cam Chest ((photo by Shu of the XLFORUM http://xlforum.net/forums/showthread.php?t=922143))|
-|{{:techtalk:evo:oil:98_cam_chest_by_evil_steve.jpg?direct&300|}}|{{:techtalk:evo:oil:99_1200_gearcase_by_vh5150.jpg?direct&300|}}|{{:techtalk:evo:oil:2000_cam_chest_by_shu.jpg?direct&300|}}|
-|2001 Cam Chest ((photo by hallin222 of the XLFORUM http://xlforum.net/forums/showpost.php?s=d966bf2521b2e6f8506c44fb310c85ac&p=2553030&postcount=26))|2003 Cam Chest ((photo by robo1040 of the XLFORUM http://xlforum.net/forums/showpost.php?s=d966bf2521b2e6f8506c44fb310c85ac&p=2553030&postcount=26))|
-|{{:techtalk:evo:oil:2001_cam_chest_by_hallin222.jpg?direct&300|}}|{{:techtalk:evo:oil:2003_cam_chest_by_robo1040.jpg?direct&300|}}|
-|2004 Cam Chest ((photo by cowboy770 of the XLFORUM http://xlforum.net/forums/showthread.php?t=989906))|2005 Cam Chest ((photo by Rico 05R of the XLFORUM http://xlforum.net/forums/showthread.php?t=1067220&page=2))|2008 Cam Chest ((photo by Helibee of the XLFORUM http://xlforum.net/forums/showthread.php?threadid=1652078))|
-|{{:techtalk:evo:oil:2004_cam_chest_by_cowboy770.jpg?direct&300|}}|{{:techtalk:evo:oil:2005_cam_chest_by_rico_05r.jpg?direct&300|}}|{{:techtalk:evo:oil:08_cam_chest_3_by_helibee.jpg?direct&300|}}|
-|2013 Cam Chest ((photo by chris_b_owens of the XLFORUM http://xlforum.net/forums/showthread.php?p=5073119#post5073119))|
-|{{:techtalk:evo:oil:2013_cam_chest_by_chris_b_owens.jpg?direct&300|}}|
-|XR1200 Cam Chest ((photos by XR1200 Cam Chest 1 by Ralphthe3rd of the XLFORUM http://xlforum.net/forums/showthread.php?page=4&t=218682))||
-|{{:techtalk:evo:oil:xr1200_cam_chest_1_by_ralphthe3rd.jpg?direct&300|}}|{{:techtalk:evo:oil:xr1200_cam_chest_2_by_ralphthe3rd.jpg?direct&300|}}|
@@ Line 51: / Line 19: @@
       * The lifters supply oil pressure to the rocker boxes.
-|  86-90 main oil feed path ((photos by Mini_blitz of the XLFORUM, labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=1974615&page=3))  ||
+|  86-90 main oil feed path ((photos by Mini_blitz of the XLFORUM, labeled by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183493-1986-evolution-sportster-cam-cover-install-help/page3?t=1974615&page=3))  ||
 |{{:techtalk:evo:oil:86-90_right_case_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}|{{:techtalk:evo:oil:86_cam_cover_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}|
@@ Line 74: / Line 42: @@
 You can see the oil path (channels from the filter to the engine). \\
 There is a plug on the outside case in the area of the filter. \\
-The plugged hole is from where the MoCo drilled the oil passage to connect the outlet of the oil filter to the lifters. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?threadid=1652078)) \\
+The plugged hole is from where the MoCo drilled the oil passage to connect the outlet of the oil filter to the lifters. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/153560-doing-my-560-cam-swap-and-have-a-couple?threadid=1652078)) \\
 After they drill it, they stick a plug in it. \\
 There are other plugged holes like that on your motor where the drilling operation left a hole that had to be plugged. \\
-|On 91-99 engines, the oil feed galley is internal from \\ the filter pad. Oil travels to each lifter individually \\ from this cavity. ((photo by ehrgeiz of the XLFORUM http://xlforum.net/forums/showthread.php?t=654598&page=2))|Rifling hole for the feed galley is plugged outside \\ the case near the filter. ((photo by Hippysmack))|
+|On 91-99 engines, the oil feed galley is internal from \\ the filter pad. Oil travels to each lifter individually \\ from this cavity. ((photo by ehrgeiz of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/85487-ehrgeiz-s-stage-3-1250-build-thread/page2?t=654598&page=2))|Rifling hole for the feed galley is plugged outside \\ the case near the filter. ((photo by Hippysmack))|
 |{{:techtalk:evo:oil:1999_cam_chest_by_ehrgeiz.jpg?direct&300|}}|{{:techtalk:evo:oil:98_cam_chest_by_hippysmack.jpg?direct&300|}}|
-|On 2000 and up engines, the oil feed galley is \\ external. Oil travels to each lifter individually from \\ this cavity. ((drummerboy4as of the XLFORUM, labeled by Hippysmack  http://xlforum.net/forums/showthread.php?threadid=175003))|The rifling hole for the feed galley is plugged outside \\ the case near the filter. ((photo by Helibee of the XLFORUM http://xlforum.net/forums/showthread.php?threadid=1652078))|
+|On 2000 and up engines, the oil feed galley is \\ external. Oil travels to each lifter individually from \\ this cavity. ((drummerboy4as of the XLFORUM, labeled by Hippysmack  https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/46850-another-nrhs-883-1250-conversion-thread?threadid=175003))|The rifling hole for the feed galley is plugged outside \\ the case near the filter. ((photo by Helibee of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/153560-doing-my-560-cam-swap-and-have-a-couple?threadid=1652078))|
 |{{:techtalk:evo:oil:2006_cam_chest_by_drummerboy4as.jpg?direct&300|}}|{{:techtalk:evo:oil:08_cam_chest_2_by_helibee.jpg?direct&300|}}|
-====== Top End Oiling ======
-There are, however, hydraulic lifter designs that completely cut off the oil feed when you come off the base circle. \\
-For example: \\
-{{:techtalk:evo:oil:hydraulic_lifter_by_aswracing.jpg?direct&300|}} ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1933342&page=3))
-**86-90 engines**: \\
-The oil feed to the lifters comes from the oil pump, through a passage in the cam cover to the feed galley in the top of the right case. \\
-The intake lifters are fed oil from the feed galley hole. \\
-Each exhaust lifter is fed from it's corresponding intake lifter bore. \\
-|  86-90 lifter oiling path ((photo by Mini_blitz of the XLFORUM http://xlforum.net/forums/showthread.php?t=1974615&page=3))  |
-|{{:techtalk:evo:oil:86-90_engine_lifter_oiling_by_mini_blitz.jpg?direct&300|}}|
-**91-99 engines**: \\
-The oiling hole for the lifters in 91-99 engines is drilled from the inside of the right case out through the lifter bore and into the case oil galley. \\
-All four lifter bores are capped on the inside of the right case. \\
-This left a blind hole between each lifter toward the inside of the case. \\
-|91-99 Lifter oil path from filter. ((photo by ehrgeiz of the XLFORUM labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=654598&page=2)) |Capped holes for the lifter bores inside the case. ((photo by WestJC7745 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1971672)) |
-|{{:techtalk:evo:oil:1999_engine_lifter_oiling_by_ehrgeiz.jpg?direct&300|}}|{{:techtalk:evo:oil:inside_right_case_half_by_westjc7745.jpg?direct&300|}}|
-|  91-99 lifter bore ((photos by Hippysmack))  ||
-|{{:techtalk:evo:oil:91-99_lifter_oiling_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_lifter_oiling_1_by_hippysmack.jpg?direct&300|}}|
-|A look inside the oiling holes in the lifter bore on a 91-99 case. Notice the capped hole toward the case in the third pic. ((photos by Hippysmack))  |||
-|{{:techtalk:evo:oil:inlet_hole_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:hole_toward_the_crankcase_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:hole_toward_the_crankcase_2_by_hippysmack.jpg?direct&300|}}|
-**2000 and Up engines**: \\
-However, the oil galley was now cut into the right case instead of a rifle drilled hole. \\
-This made it easy to drill oiling holes to the lifters from the outside of the case into the lifter bore. \\
-So there were no lifter oiling holes to cap on the inside of 2000 and up cases. \\
-|2000 and Up engine lifter oil path. ((photo by Scuba10jdl of the XLFORUM http://xlforum.net/forums/showthread.php?t=1959021))|Inside of case has no capped holes for lifter holes. ((photo by meherdad_it of the XLFORUM  http://xlforum.net/forums/showthread.php?threadid=944843))|
-|{{:techtalk:evo:oil:2002_cam_chest_by_scuba10jdl.jpg?direct&300|}}|{{:techtalk:evo:oil:inside_right_case_by_meherdad_it.jpg?direct&300|}}|
-===== Rocker arm / Valve oiling =====
-=== All ===
-      * Oil flows up the holes in the pushrods from the lifters and enters the rocker arms through a hole in the pushrod end of the arm.
-      * Oil is supplied to each valve stem and springs from the drilled holes in the underside of each rocker arm above them.
-        * The holes are only on the valve side of each rocker arm.
-      * Oil is also forced through the clearance between the rocker arm shafts and bushings for lubrication there.
-|  Valve oiler holes in Rockers ((photo by Hippysmack))  |  Rocker arm oiling path ((photo by Hippysmack))  |
-|{{:techtalk:evo:oil:rocker_arm-valve_oiler_holes_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:rocker_arm_oil_path-_exhaust_by_hippysmack.jpg?direct&300|}}|
-|  Valve Squirter Hole Locations ((photos by Hippysmack))  ||
-|{{:techtalk:evo:oil:rocker_arm_-_valve_squirter_locations_pic1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:rocker_arm_-_valve_squirter_locations_pic2_by_hippysmack.jpg?direct&300|}}|
-===== Rocker Box Oiling =====
-=== 91-99 engines ===
-    * Crankcase pressure (air and oil mist) is routed up the pushrod tubes (bypassing the falling oil from the rocker boxes) into the rocker box.
-    * Collected air pressure and oil mist in each rocker box is routed up into a sealed cavity in the lower portion of the box.
-    * This mixture passes up from underneath a rubber one-way valve (umbrella valve) sitting over the cavity inlet.
-    * The oil is designed to separate from the air by;
-      * Hitting the underside of the umbrella valve and falling back into the sealed cavity in the middle rocker box.
-      * From there it should drain back into the lower rocker box through a tiny hole behind the umbrella valve.
-      * This tiny hole is in a recessed area behind the umbrella valve.
-      * There is a certain amount of backpressure in the sealed cavity away from the air exit hole.
-      * This backpressure should help push the oil into the tiny hole and back into the lower rocker box area to be carried back down to the lower end.
-      * The upstroke of the pistons causes a vacuum to form in the system. \\ This vacuum is also pulled through the oil passage from the heads / rocker box. \\ (in theory, it should help pull oil through the drains in the heads to the bottom end.
-  * Air pressure is designed to continue up past the umbrella valve and exit a hole in each head on the intake valve side.
-  * Pressure escapes the head through the hollow bolts (one in each head) that hold the air cleaner mount.
-=== 2000 and Up engines ===
 ====== Bottom End Oiling ======
-===== Pinion shaft and Crank Pin =====
-=== All ===
-  * Pressurized oil in the pinion bushing is sent through a hole in the (hollow) pinion shaft toward the flywheel.
-    * Oil travels to and through the right flywheel via an internal passage from the pinion bore and the crank pin bore in the flywheel. \\ Oil enters the crank pin inside the crank pin bore on the flywheel.
-    * Oil is routed out of the crank pin through a hole under the rod bearings in the middle of the pin and circulates to the rod bearings.
-  * **This is the end point of static oil pump pressure to the bottom end**.
-  * Oil leaving the rod bearings flows into the crankcase to be scavenged by the oil pump (or splashed into the gearcase).
-  * Crankcase pressure moves the oil from this point.
-|   L81-03 'one hole' crank pin. ((photo by Hippysmack))  |||
-|{{:techtalk:evo:oil:crank_pin_oiling_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:crank_pin_oiling_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:crank_pin_oiling_3_by_hippysmack.jpg?direct&300|}}|
-===== Cam Oiling =====
-      * Oil flows off the pushrod side of the rocker boxes through the pushrod covers, into vertical holes in the lifter bores and into the gearcase.
-        * Oil falls on the cam lobes on the way down this hole.
-        * Some of this oil is transferred between the gear teeth.
-      * The rear intake (#2) cam gets a little oil spray from the right case oil feed galley through the small orifice underneath the open cavity in the case.
-        * That oil is transferred between the teeth of the cams.
-      * Oil flung off the cams lands in the gearcase to be collected into the scavenge (return) side of the oil pump.
-Below are pics of the restricted orifice underneath the oil feed galley in the case that shoots a small stream onto #2 cam. \\
-#2 cam rotates counterclockwise and the oil is sprayed on the right side of the cam gear for extra cooling.
-|  (L) 92-99 ((photo by Hippysmack of the XLFORUM)), (R) 2000 Up ((photo by Bruce of the XLFORUM http://xlforum.net/forums/showthread.php?t=1118529&page=2up)) cam oiling hole from the feed galley  ||
-| {{:techtalk:evo:oil:92-99_cam_oiler_hole_by_hippysmack.jpg?direct&300|}} |{{:techtalk:evo:oil:2000_up_cam_oiler_hole_by_bruce.jpg?direct&300|}}|
-===== Cam Cover Bushings =====
-All cam bushings are fed from splash oil into channeled holes drilled behind the bushing faces. \\
-#1, #3 and #4 cam bores have channels drilled from the top down into the back side of the bores. \\
-The channel for #2 cam bore starts at the bottom and is drilled into the back side of the bore. \\
-The pinion bushing (as well as the hole in the pinion shaft) is fed from a cross drilled hole in the top of the cover. \\
-|{{:techtalk:evo:oil:cam_bushing_oiling_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_3_by_hippysmack.jpg?direct&300|}}|
-|{{:techtalk:evo:oil:pinion_bushing-shaft_oiling_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_5_by_hippysmack.jpg?direct&300|}}|
-|{{:techtalk:evo:oil:cam_bushing_oiling_6_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_8_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_bushing_oiling_7_by_hippysmack.jpg?direct&300|}}|
-===== Cam Cover \ Gasket =====
-and up Sportster engines have an internal rifling hole drilled into the lower left side of the case running past the left side of the oil pump. \\
-That extra hole (in the picture below) is benign and doesn't need a hole in the gasket to match. \\
-That hole is purely an artifact of how they connected two passages for routing crankcase oil up to the oil pump's scavenge section. \\
-They drill that hole to connect the two passages, and then it gets blocked off naturally by the cam box cover and gasket. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=2036109&highlight=oil+pump&page=3)) \\
-Also, in 2000, the factory changed the oil routing to the lifters to make manufacturing the cases easier. \\
-The newer cam cover on the left in the pic below and has two extra grooves along the top. \\
-These grooves let oil get to the lifters. \\
-If you have an older style gasket, it will not have cutouts for the grooves and you won't get oil to the lifters. \\
-|  Rubbermount Evo vs Rigid Evo Cam Cover Internals ((photo by Moved On of the XLFORUM http://xlforum.net/forums/showthread.php?t=87313))  |
-|{{:techtalk:evo:oil:rubbermount_vs_rigid_evo_cam_cover_comparison_by_moved_on.jpg?direct&600|}}|
-|  Both have been chopped on the outside but the gearcase perimeter is intact on them for reference.  |
-|  91-99 cam cover gasket ((photo by Hippysmack))  |  91-99 cam cover seals off the extra hole. ((photos by Hippysmack))  ||
-|{{:techtalk:evo:oil:91-99_cam_cover_gasket_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_cam_cover_gasket_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_cam_cover_gasket_4_by_hippysmack.jpg?direct&300|}}|
-|  2000-up cam cover gasket ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=7))  |2000 up gasket seals off the extra hole. ((sep69 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2036109&highlight=oil+pump&page=3))|
-|{{:techtalk:evo:oil:2000_up_cam_cover_gasket_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_cover_gasket_on_03_model_by_sep69.jpg?direct&300|}}|
 \\
-**DON'T INSTALL a 91-99 CAM COVER GASKET ON A 2000-UP MOTOR!!!!!!!**
-The 91-99 cam cover gasket has no business being on a 2000+ motor at all. It will cause you to lose all oil pressure. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=2079110&highlight=oil+tank&page=14)) \\
-The 2000+ gasket supersedes the 91-99 gasket. In other words, it can be used all the way back to 1991. \\
-Most companies completely dropped the 91-99 specific gasket and only offer the one that can be used from 1991-present. \\
-Either James Gasket hasn't done that, or they may have some old stock. \\
-The 91-99 lifter feed galley is an internal rifling hole in the case. It's drilled thru the case and only open to the cam cover via the center port to the pinion bushing. \\
-The 2000-up lifter feed galley is external and it takes both the cover and the case mounted together to make up the feed galley. \\
-So 00-up feed galley is split in half between the case and cover. The slots in the 2000-up cam cover gasket mate to both the case and the cover. \\
-If you have the correct gasket on there, oil would be forced (between the cover and case) to all the lifter feed holes and piston squirters. \\
-With the wrong gasket (91-99), oil pressure leaving the filter gets into that (now open) galley. \\
-Then the oil will blow into into the cam chest, therefore bypassing the lifters, piston squirters and rod bearings. \\
-The oil will simply cycle from the oil pump to cam chest to oil pump and back to the oil tank. \\
-The oil light will stay off so you'll get no notice before moving the parts start oil starving and making noises and worse if the noises aren't heeded to quickly. \\
-|  2000-up motor with 91-99 cam cover gasket. ((photo by BestCoastXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=2079110&highlight=oil+tank&page=12))  |  Below is a rough cross section of the joint in the \\ feed galley at that first slotted run. ((drawing by Hippysmack))  |
-|{{:techtalk:evo:oil:2000-up_sportster_with_wrong_91-99_cam_cover_gasket_by_bestcoastxl.jpg?direct&300|}}|{{:techtalk:evo:oil:2000-up_sportster_with_wrong_91-99_cam_cover_gasket_by_hippysmack.png?direct&300|}}|
 ====== Case Oiling and Drainage ======
 ===== 86-90 Engines =====
 {{:techtalk:evo:oil:86-90_sportster_oil_drainage_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack))
 ==== Gravity Drains ====
   * __**Gravity oil**__ (drained from rocker boxes and head/cylinder drainage) falls on moving parts and into the crankcase.
     * Oil collected in the rocker box is returned to the crankcase through a passage in the cylinder and the head.
@@ Line 249: / Line 68: @@
 Tappet blocks are directional (rear exhaust shown below). \\
 {{:techtalk:evo:oil:tappet_block_1986-1990_sportster_pic1_by_robison_motorcycles.jpg?direct&300|}} ((photo courtesy of Ebay seller, Robison Motorcycles [[https://www.ebay.com/str/robisonmotorcycles?_trksid=p2047675.l2563|Link to Ebay Store]] )) {{:techtalk:evo:oil:tappet_block_1986-1990_sportster_pic2_by_robison_motorcycles.jpg?direct&300|}} ((photo courtesy of Ebay seller, Robison Motorcycles [[https://www.ebay.com/str/robisonmotorcycles?_trksid=p2047675.l2563|Link to Ebay Store]] )) \\
 ==== Splash ====
   * __**Occasional excess pressured oil (from the oil filter pad)**__ is dumped into the gearcase by the oil pressure relief valve.
     * High pressure oil, when cold (on startup), opens the pressure regulator.
@@ Line 264: / Line 83: @@
-|  86-90 engine sump splash holes ((photo by Mini_blitz of the XLFORUM http://xlforum.net/forums/showthread.php?t=1974615&page=3))  |
+|  86-90 engine sump splash holes ((photo by Mini_blitz of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183493-1986-evolution-sportster-cam-cover-install-help/page3?t=1974615&page=3))  |
 |{{:techtalk:evo:oil:86-90_sump_splash_ports_oiling_by_mini_blitz.jpg?direct&300|}}|
-==== Oil Pump Scavenge ====
+==== Oil Pump Scavenge ====
   * __**Drainage**__
-|  86-90 oil scavenging ((photo by Mini_blitz of the XLFORUM http://xlforum.net/forums/showthread.php?t=1974615&page=3))  |  86-90 cam cover ((photo by engine of the XLFORUM http://xlforum.net/forums/showthread.php?t=22717))  |  86-90 Oil Pump Oiling Paths. ((photo by Hippysmack))  |
+|  86-90 oil scavenging ((photo by Mini_blitz of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183493-1986-evolution-sportster-cam-cover-install-help/page3?t=1974615&page=3))  |  86-90 cam cover ((photo by engine of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-styles/sportster-motorcycle-project/13592-1200-conv-progress?t=22717))  |  86-90 Oil Pump Oiling Paths. ((photo by Hippysmack))  |
 |{{:techtalk:evo:oil:86-90_engine_scavenging_by_mini_blitz.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_cam_cover_by_engine.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_oiling_paths_by_hippysmack.jpg?direct&300|}}|
 ===== 91-Up Engines =====
 {{:techtalk:evo:oil:91_sportster_oil_drainage_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) {{:techtalk:evo:oil:92-97_sportster_oil_drainage_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack))  \\
 {{:techtalk:evo:oil:98-03_sportster_oil_drainage_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) {{:techtalk:evo:oil:04_and_up_sportster_oil_drainage_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack))  \\
-==== Gravity ====
+==== Gravity ====
   * __**Gravity oil**__ (drained from rocker boxes and head/cylinder drainage) falls on moving parts and into the crankcase.
     * __**(91 only) - Occasional excess pressured oil (from the oil filter pad)**__ is dumped into the gearcase by the oil pressure relief valve.
@@ Line 298: / Line 118: @@
 |{{:techtalk:evo:oil:head_drain_holes_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_drain_holes_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98_cylinder_head_drains_by_hippysmack.jpg?direct&300|}}|
-|  91-03 style rear head drainage hole  ((photos by Hippysmack))  ||  Head drains at the cylinder base on the case. ((photo by isiahstites of the XLFORUM http://xlforum.net/forums/showthread.php?t=51598&page=5))  |
+|  91-03 style rear head drainage hole  ((photos by Hippysmack))  ||  Head drains at the cylinder base on the case. ((photo by isiahstites of the XLFORUM https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/lsr-sporster-buell-motorcycle-land-speed-record/31067-my-ls-build/page5?t=51598&page=5))  |
 |{{:techtalk:evo:oil:head_drain_holes_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_drain_holes_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_case_drains_by_isiahstites.jpg?direct&300|}}|
     * __**04-Up**__
@@ Line 309: / Line 128: @@
         * The separated oil flows into drain holes in the rocker boxes and back into the gearcase.
-|  Head drains in the cylinders ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=6)) \\ 1 hole is plugged on each cylinder during installation.  |  Head drains at the cylinder base on the case ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=4))  |
+|  Head drains in the cylinders ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page6?t=1422877&page=6)) \\ 1 hole is plugged on each cylinder during installation.  |  Head drains at the cylinder base on the case ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page4?t=1422877&page=4))  |
 |{{:techtalk:evo:oil:05_cylinder_drain_holes_2_by_johnk.jpg?direct&300|}}|{{:techtalk:evo:oil:05_head_drains_by_johnk.jpg?direct&300|}}|
-|Milled slots in the left case match milled slots in the \\ right case for rocker box drain from valve side. ((photo by bsaman of the XLFORUM, labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=691283&page=3))|Lower part of slots in the right case exit thru drilled holes into the gearcase. ((photo by meherdad_it of the XLFORUM, labeled by Hippysmack http://xlforum.net/forums/showthread.php?threadid=944843))||
+|Milled slots in the left case match milled slots in the \\ right case for rocker box drain from valve side. ((photo by bsaman of the XLFORUM, labeled by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/87615-crank-replacement-documentation/page3?t=691283&page=3))|Lower part of slots in the right case exit thru drilled holes into the gearcase. ((photo by meherdad_it of the XLFORUM, labeled by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/105751-installing-the-90-nrhs?threadid=944843))||
 |{{:techtalk:evo:oil:04-up_topend_oil_drainage_by_bsaman.jpg?direct&300|}}|{{:techtalk:evo:oil:06_right_crankcase_1_by_meherdad_it.jpg?direct&300|}}|{{:techtalk:evo:oil:06_cam_chest_head_drains_by_meherdad_it_-cropped-labeled_by_hippysmack.jpg?direct&300|}}|
-|  Rocker box drains into the cam chest. ((photos by dieselvette of the XLFORUM http://xlforum.net/forums/showthread.php?t=2073932&page=67))  ||
+|  Rocker box drains into the cam chest. ((photos by dieselvette of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/197307-sportster-crankcase-pressure-engine-breathing-wetsumping-and-mods/page67?t=2073932&page=67))  ||
 |{{:techtalk:evo:oil:04_rocker_box_drains_into_cam_chest_wall_1_by_dieselvette.jpg?direct&300|}}|{{:techtalk:evo:oil:04_rocker_box_drains_into_cam_chest_wall_2_by_dieselvette.jpg?direct&300|}}|
 ==== Splash ====
   * __**Splash oil**__ \\ (from the up and down movement of the connecting rods, crankshaft and pressure generated under the pistons on downstroke)
   * Crankcase pressure mixed with oil in the sump area serves to splash (and lubricate) the moving parts such as;
@@ Line 329: / Line 147: @@
 === 91-99 ===
+|  91-99 crankcase splash holes. ((photo by ehrgeiz of the XLFORUM and labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=654598&page=2))  |  Close up view of a 98 cam chest. ((photo by isiahstites of the XLFORUM and labeled by Hippysmack https://www.xlforum.net/forum/sportster-buell-motorcycle-racing/lsr-sporster-buell-motorcycle-land-speed-record/31067-my-ls-build/page5?t=51598&page=5))  |
-|  91-99 crankcase splash holes. ((photo by ehrgeiz of the XLFORUM and labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=654598&page=2))  |  Close up view of a 98 cam chest. ((photo by isiahstites of the XLFORUM and labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=51598&page=5))  |
 |{{:techtalk:evo:oil:91-99_sump_splash_ports_by_ehrgeiz.jpg?direct&300|}}|{{:techtalk:evo:oil:98_cam_chest_by_isiahstites.jpg?direct&300|}}|
 === 00-03 ===
+|  00-03 crankcase splash holes. ((photo by WestJC7745 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183128-1995-xlh1200?t=1971672))  |  Close up view of an 02 cam chest. ((photo by Bruce of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116357-bruce-s-conversion-finally/page2?t=1118529&page=2up))  |
-|  00-03 crankcase splash holes. ((photo by WestJC7745 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1971672))  |  Close up view of an 02 cam chest. ((photo by Bruce of the XLFORUM http://xlforum.net/forums/showthread.php?t=1118529&page=2up))  |
 |{{:techtalk:evo:oil:2000_and_up_sump_splash_ports_by_drummerboy4as.jpg?direct&300|}}|{{:techtalk:evo:oil:02_cam_chest_1_by_bruce.jpg?direct&300|}}|
@@ Line 348: / Line 163: @@
   * There is no seal on the bearing and air pulses into the cam chest to be pulled up into vertical passages between the cam slots.
-|  04-up piston jets. ((photos by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=6))  ||  Piston jets from inside the case. ((photo by meherdad_it of the XLFORUM http://xlforum.net/forums/showthread.php?threadid=944843))  |
+|  04-up piston jets. ((photos by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page6?t=1422877&page=6))  ||  Piston jets from inside the case. ((photo by meherdad_it of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/105751-installing-the-90-nrhs?threadid=944843))  |
 |{{:techtalk:evo:oil:05_piston_oilers_3_by_meherdad_it.jpg?direct&300|}}|{{:techtalk:evo:oil:05_piston_oilers_2_by_meherdad_it.jpg?direct&300|}}|{{:techtalk:evo:oil:06_piston_oilers_1_by_meherdad_it.jpg?direct&300|}}|
 ==== Oil Pump Scavenge ====
@@ Line 356: / Line 170: @@
   * __**Drainage**__
-    * Oil collected in the crankcase sump is passage-routed to the scavenger side of the oil pump. \\ (by pressure generated by the downward stroke of the pistons and the scavenging effect of the pump) \\ Sump oil is collected by the pump at the 'ladle, half spoon, duck bill' protruding from the back of it where oil drops onto the scavenge gerotors.. ((http://xlforum.net/forums/showthread.php?postid=5473151#post5473151))
+    * Oil collected in the crankcase sump is passage-routed to the scavenger side of the oil pump. \\ (by pressure generated by the downward stroke of the pistons and the scavenging effect of the pump) \\ Sump oil is collected by the pump at the 'ladle, half spoon, duck bill' protruding from the back of it where oil drops onto the scavenge gerotors.. ((https://www.xlforum.net/forum/sportster-motorcycle-forum/lubrication-and-lubricants/187300-how-to-clear-a-sump-full-of-oil/page3?postid=5473151#post4009969))
     * Oil collected in the gearcase / cam chest is routed to a drain port in the top of the oil pump where it drops down onto the scavenge gerotors.
     * Return oil fills a cavity above the pump's return gears from these dual inlets and pumps the oil back into the oil tank.
-  * Below is the case drain for a 98 engine. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1520811&highlight=oil+pump&page=3))
+  * Below is the case drain for a 98 engine. ((aswracing of the XLFORUM https://www.xlforum.net/forum/buell-motorcycle-forum/buell-motorcycle-general-discussion-and-problems/140238-96-buell-s1-engine-problems-need-help/page3?t=1520811&highlight=oil+pump&page=3))
     * It's also a rifling hole drilled to connect the sump drain to the oil pump scavenge galley.
     * It could be plugged with a treaded pipe plug or a freeze plug.
-|  Case drain / rifling hole for sump drain ((photo by Steelworker of the XLFORUM http://xlforum.net/forums/showthread.php?t=1520811&highlight=oil+pump&page=3))  |  Rifling hole is on the back side of hole on the right. ((photo by WestJC7745 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1971672))|
+|  Case drain / rifling hole for sump drain ((photo by Steelworker of the XLFORUM https://www.xlforum.net/forum/buell-motorcycle-forum/buell-motorcycle-general-discussion-and-problems/140238-96-buell-s1-engine-problems-need-help/page3?t=1520811&highlight=oil+pump&page=3))  |  Rifling hole is on the back side of hole on the right. ((photo by WestJC7745 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183128-1995-xlh1200?t=1971672))|
 |{{:techtalk:evo:oil:98_oil_galley_rifling_hole_by_steelworker.jpg?direct&300|}}|{{:techtalk:evo:oil:95_right_case_half_by_westjc7745.jpg?direct&300|}}|
-|  04 and up oil scavenge path ((photo by meherdad_it of the XLFORUM, cropped & labeled by Hippysmack  http://xlforum.net/forums/showthread.php?t=944843&page=2))  |  04_up sump drain plug. ((photo by Bored now of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071954&highlight=oil+tank+pressure&page=2))  |
+|  04 and up oil scavenge path ((photo by meherdad_it of the XLFORUM, cropped & labeled by Hippysmack  https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/105751-installing-the-90-nrhs/page2?t=944843&page=2))  |  04_up sump drain plug. ((photo by Bored now of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/195584-oil-tank-building-presure-blew-out-dip-stick/page2?t=2071954&highlight=oil+tank+pressure&page=2))  |
 |{{:techtalk:evo:oil:04-up_oil_scavenge_path_by_meherdad_it.jpg?direct&300|}}|{{:techtalk:evo:oil:04_up_sump_drain_plug_by_bored_now.jpg?direct&300|}}|
-|  98 and Up Oil Pump Oiling Paths ((photo by bsaman of the XLFORUM http://xlforum.net/forums/showthread.php?t=691283&page=2))  |
+|  98 and Up Oil Pump Oiling Paths ((photo by bsaman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/87615-crank-replacement-documentation/page2?t=691283&page=2))  |
 |{{:techtalk:evo:oil:98-up_oil_pump_oiling_paths_by_bsaman.jpg?direct&300|}}|
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