Differences

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

--- techtalk:evo:engmech01c [2022/01/13 05:13]
hippysmack [Right Case Oil Scavenge / Engine Breathing]
+++ techtalk:evo:engmech01c [2022/02/08 21:36]
hippysmack [Interchangeability]
@@ Line 5: / Line 5: @@
 The engine cases below are grouped by the year span they were installed on. \\
 Notice the casting numbers follow the same pattern although there may differences in color and minor machining within a group. \\
+====== Interchangeability ======
+  * **Swapping engines and frames**: \\ This is to answer the question of "Will this motor bolt to that frame?". There are other factors not taken into account in this section. \\ This is also in consideration of swapping an entire (complete) engine, not mix matched case halves or other functions/features.
+    * Any 1986-1990 engine will be a bolt-on to any 1986-1990 frame.
+    * Any 1991-2003 engine will be a bolt-on to any 1991-2003 frame.
+    * 1991-2003 engines will bolt to 1986-1990 frames with the consideration of the kickstand mount on the left bottom tube.  \\ The casing is larger at the front due to the rotor and stator being moved to the crank in 1991. \\ Otherwise, the motor mounts should all bolt up just fine.
+      * 1986-1988 frames have the jiffy stand mount welded close to the front motor mounts. \\ The kick stand mount needs to be moved as it interferes with the primary cover on 5 speed cases.
+      * 1989-1990 frames have the jiffy stand mount welded a little further back, just past the center of the oil pump. \\ You should be able to get the motor in without moving the kickstand mount. ((fcarlos085 of the XLFORUM http://xlforum.net/forums/showthread.php?t=533976&page=2))
+      * 1991-2003 frames have the jiffy stand mount welded behind the center of the motor mount.
+    * 1986-2003 motors will also bolt into 1982-1985 frames. \\ The left bottom tube has the divot to shift the motor as is in 1986-2003 frames. \\ You'll still have to deal with moving the kick stand on those however.
+Welded kickstand mount locations: ((composite of pics used with permission)) \\
+{{:techtalk:evo:body:1986-2003_sportster_frame_kickstand_mount_locations_.jpg?direct&300|}} \\
+  * **Swapping engine cases**: \\ Since 1976, the MoCo has not sold left / right case halves individually. They sold replacement cases as a left / right set. \\ So it's up to the owner to decide if swapping out a case half is the right thing to do as opposed to swapping a matched case set. \\ Case sets are factory machined / line bored and the precision is not going to be the exact same by swapping out halves from different cases. \\ Likewise, if you are swapping case halves, make sure to have it done by a competent machinist. \\
 ====== 1986-1990 Sportster Cases ======
@@ Line 11: / Line 26: @@
     * Casting numbers and location for each case, Left outer wall (24532-86) and Right outer wall (24552-86).
     * E1987 motors received these 1986 cases on a runout basis and 1987 cases were used afterwards for 1987 models. \\ So there are some early 1987 motors with 1986 (one year only) cases.
+    * Last year of "sand cast" cases.
   * 1987-1989 (all) \\ Early 1987 motors used the last of the 1986 cases (see above).
     * 1987-1989 style case set sold under part# (24527-87).
     * Casting numbers and location for each case, Left inner wall (24534-86) and Right inner wall (24558-86).
     * 1987 right case has the same casting number as the 1986 right case.
+    * 1987-up cases are now "die cast". The word "Safe Lite" is written in the inner case castings.
   * 1990 (all)
     * Case set sold under part# (24470-87) and was replacement for 1987-1989 Sportsters.
@@ Line 354: / Line 371: @@
     * The oil filter pad for 1991-up models is built into the case and is not removable.
     * Oil is fed to the engine from the top down. Oil is pumped to the oil filter pad by way of an external hose from the oil pump. \\ A drilled passage thru the upper case runs from the filter mount to the upper cam chest feed galley. \\ Then oil is pump thru passages in the cam cover to the pinion shaft to crankpin.
-    * Oil pump information: \\ The oil pump design changed for the new routing system thru the cases. \\ Any 1991-1997 Sportster oil pump is a direct bolt-on for 1991-1997 motors (will bolt up but will not work on 98-up cases). \\ Any 1998-present Sportster oil pump is a direct bolt-on for 91-up cases but has a designed inlet in the top of the pump for cam chest oil scavenge. \\ Will function on 1991-1997 cases.
+    * Oil pump information: \\ The oil pump design changed for the new routing system thru the cases. \\ Any 1991-1997 Sportster oil pump is a direct bolt-on for 1991-1997 motors (will bolt up but will not drain 1998-up cam chests). \\ Any 1998-present Sportster oil pump is a direct bolt-on for 91-up cases but has a designed inlet in the top of the pump for cam chest oil scavenge. \\ Will function on 1991-1997 cases.
     * The breather holes were redesigned using only two holes thru the cam wall with the middle hole from previous deleted. \\ The two remaining holes were enlarged in a rectangular fashion creating a bigger area for air to escape the crankcase.
     * 1991 cases (only), the oil pressure bypass was still used but installed thru the case into the back side of the oil filter mount. \\ Still dumping over pressured oil into the cam chest.
@@ Line 367: / Line 384: @@
 |{{:techtalk:evo:engmech:1992-1997_sportster_right_case-_outer_oiling-breathing_by_west_chester_cycles_inc.jpg?direct&300|}}|{{:techtalk:evo:engmech:2000-2003_sportster_right_case-_outer_oiling-breathing_by_c3-cycle-tech.jpg?direct&300|}}|
+|  1986-1990 Inner Right Case ((photo courtesy of West Chester Cycles Inc. [[https://www.ebay.com/str/westchestercyclesinc?_trksid=p2047675.l2563|Link to Ebay Store]] ))  |  1991-1997 Inner Right Case ((photo courtesy of West Chester Cycles Inc. [[https://www.ebay.com/str/westchestercyclesinc?_trksid=p2047675.l2563|Link to Ebay Store]] ))  |
+|{{:techtalk:evo:engmech:1986-1990_sportster_right_case_crankcase_oil_scavenge_by_west_chester_cycles_inc.jpg?direct&300|}}|{{:techtalk:evo:engmech:1991-1997_sportster_right_case_oil_scavenging_by_west_chester_cycles_inc.jpg?direct&300|}}|
+|  1998-1999 Inner Right Case ((photo courtesy of Ebay seller, Cycle Parts 4U, [[https://www.ebay.com/str/cycleparts4u?_trksid=p2047675.l2563|Link to Ebay Store]] ))  |  2000-2003 Inner Right Case ((photo courtesy of Ebay seller, gnarlydavidson1. [[https://www.ebay.com/sch/gnarlydavidson1/m.html?item=164269655258&rt=nc&nma=true&nordt=true&orig_cvip=true&si=HqcoQgHNj7TAtnE2%252BX5d6I6LD7A%253D&hash=item263f3c04da%3Ag%3AIDEAAOSw4CRe-35v&vxp=mtr&_trksid=p2047675.l2562|Link to Items for Sale page]]  ))  |
+|{{:techtalk:evo:engmech:1998-1999_sportster_right_case_oil_scavenging_by_88twincam99.jpg?direct&300|}}|{{:techtalk:evo:engmech:2000-2003_sportster_right_case_oil_scavenging_by_gnarlydavidson1.jpg?direct&300|}}|
 ==== High Oil Pressure Bypass ====
   * 1986-1990 cases do not have provisions for a high oil pressure bypass valve. \\ The bypass is built into the removable oil filter housing that bolts to the front of the right case. \\ There is however a discharge hole in the case from the back of the filter housing into the cam case. \\ Oil released from the bypass valve dumps to the cam chest floor to run the scavenge route back to the oil tank.
@@ Line 379: / Line 401: @@
 ==== Primary / Transmission External Vent (1986-Present) ====
+[[techtalk:evo:oil07#trans_primary_oiling|Click Here]] to reference the Trans/Primary Oiling page in the Sportsterpedia. \\
 |  1986-1990 Transmission Vent ((photo courtesy of c3cycle.com, Link to site: https://www.c3cycle.com/))  |  1991-1999 Transmission Vent ((photo courtesy of c3cycle.com, Link to site: https://www.c3cycle.com/))  |  2000-2003 Primary Vent ((photo courtesy of c3cycle.com, Link to site: https://www.c3cycle.com/))  |
 |{{:techtalk:evo:engmech:1986-1990_sportster_primary-transmission_vent_by_c3-cycle-tech.jpg?direct&300|}}|{{:techtalk:evo:engmech:1991-1999_transmission_-_primary_vent_location_by_c3-cycle-tech.jpg?direct&300|}}|{{:techtalk:evo:engmech:2000-2003_sportster_transmission-primary_vent_by_c3-cycle-tech.jpg?direct&300|}}|

Trace:

Differences

Navigation

Search

Toolbox