Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
|
techtalk:ih:engmech09 [2021/07/28 07:10] hippysmack [Sub Documents] |
techtalk:ih:engmech09 [2023/12/27 20:43] hippysmack |
||
|---|---|---|---|
| Line 12: | Line 12: | ||
| * [[techtalk:ih:engmech09c|Ironhead Motor Mount Torque Specs]] | * [[techtalk:ih:engmech09c|Ironhead Motor Mount Torque Specs]] | ||
| * [[techtalk:ih:engmech09p|Discrepancies with Motor Mount Illustrations in the HD Manuals (57-76)]] | * [[techtalk:ih:engmech09p|Discrepancies with Motor Mount Illustrations in the HD Manuals (57-76)]] | ||
| + | |||
| ===== Bolt Grades ===== | ===== Bolt Grades ===== | ||
| There are conflicting views on what grade bolts to use. \\ | There are conflicting views on what grade bolts to use. \\ | ||
| Line 18: | Line 19: | ||
| And that upon a collision, a grade 8 bolt would break or shear whereas a grade 5 bolt would bend or deform (but still remain "intact"). \\ | And that upon a collision, a grade 8 bolt would break or shear whereas a grade 5 bolt would bend or deform (but still remain "intact"). \\ | ||
| (That reasoning is debatable however. Both have been used successfully) \\ | (That reasoning is debatable however. Both have been used successfully) \\ | ||
| - | Others say a grade 8 bolt is always harder, and stronger in tensile and shear than a grade 5. ((DDDDylan of the XLFORUM http://xlforum.net/forums/showthread.php?t=829078&page=2)) \\ | + | Others say a grade 8 bolt is always harder, and stronger in tensile and shear than a grade 5. ((DDDDylan of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/97896-motor-mount-bolts-need-specs/page2?t=829078&page=2)) \\ |
| (30,000 psi higher in tensile strength and 40,000-50,000 psi higher in shear strength). \\ | (30,000 psi higher in tensile strength and 40,000-50,000 psi higher in shear strength). \\ | ||
| If loaded to failure, grade 5 will have more % elongation than a grade 8 before it finally breaks, but will still break at a lower stress than a grade 8. \\ | If loaded to failure, grade 5 will have more % elongation than a grade 8 before it finally breaks, but will still break at a lower stress than a grade 8. \\ | ||
| Line 24: | Line 25: | ||
| Lower grades are used to save cost over higher grades when cost is a factor. Lower grades offer no mechanical advantage. \\ | Lower grades are used to save cost over higher grades when cost is a factor. Lower grades offer no mechanical advantage. \\ | ||
| The MoCo's first use of grade 8 motor mount bolts was in 1986. \\ | The MoCo's first use of grade 8 motor mount bolts was in 1986. \\ | ||
| - | |||
| ===== Parts Lists ===== | ===== Parts Lists ===== | ||
| - | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}|||| | + | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}||||| |
| - | | Rear Motor Mounts |||| | + | | Rear Motor Mounts ||||| |
| - | |Part#|Year model|Hole for kicker|Notes| | + | |Part#|Year model|Hole for kicker|Rear Mount \\ Bushing|Notes| |
| - | |16201-52|52-60 K Models/XL/XLH/XLCH| ✔ |4 hole| | + | |16201-52|52-60 K Models/XL/XLH/XLCH| ✔ | ✘ |4 hole mount.| |
| - | |16201-58|61-E62 XLH/XLCH \\ 67-69 XLCH| ✔ |4 hole| | + | |16201-58|61-E62 XLH/XLCH| ✔ | ✘ |4 hole mount. \\ Replaced by 16201-52 (-65)| |
| - | |16201-58A|L62-66 XLH/XLCH \\ 67-69 XLCH| ✔ |4 hole| | + | |16201-58A|L62-66 XLH/XLCH \\ 67-69 XLCH| ✔ |16202-62|4 hole mount.| |
| - | |16203-67|67-81 XL/XLH/XLS \\ 70-81 XLCH| ✔ |2 hole| | + | |16203-67|67-81 XL/XLH/XLS \\ 70-81 XLCH| ✔ |16202-62|2 hole mount.| |
| - | |16203-82|82-83 All| ✘ |2 hole. Replaced by 16203-82A. Appearance- cast| | + | |16203-82|82-83 All| ✘ |16240-82|2 hole mount. Replaced by 16203-82A. \\ Appearance- cast| |
| - | |16203-82A|84-90 All| ✘ |2 hole. Replacement for 16203-82. Appearance- billet| | + | |16203-82A|84-90 All| ✘ |16240-82|2 hole mount. Replacement for 16203-82. \\ Appearance- billet| |
| ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}||| | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&820|}}||| | ||
| Line 75: | Line 75: | ||
| * [[techtalk:ih:engmech09e|Rear Motor Mount Bolt Sizes and Lengths from Parts Catalogs]] | * [[techtalk:ih:engmech09e|Rear Motor Mount Bolt Sizes and Lengths from Parts Catalogs]] | ||
| * [[techtalk:ih:engmech09f|Broken / Cracked Rear Mounts]] | * [[techtalk:ih:engmech09f|Broken / Cracked Rear Mounts]] | ||
| - | * [[techtalk:ih:engmech09g|Removing the Rear Motor Mount and Studs]] | + | * [[techtalk:ih:engmech09g|Removing the Rear Motor Mount and Studs from the Engine]] |
| * [[techtalk:ih:engmech09h|Rear Mount Assembly]] | * [[techtalk:ih:engmech09h|Rear Mount Assembly]] | ||
| * [[techtalk:ref:engmech09|Aftermarket Rear Mount Option (Pingel)]] | * [[techtalk:ref:engmech09|Aftermarket Rear Mount Option (Pingel)]] | ||
| + | |||
| ===== Using studs vs bolts on rear mounts ===== | ===== Using studs vs bolts on rear mounts ===== | ||
| The stud (or bolt) is threaded into an aluminum casting (the case) which is not noted for having great strength. ((piniongear at HD Forums https://www.hdforums.com/forum/ironhead/633728-ironhead-rear-motor-mount-stud.html)) \\ | The stud (or bolt) is threaded into an aluminum casting (the case) which is not noted for having great strength. ((piniongear at HD Forums https://www.hdforums.com/forum/ironhead/633728-ironhead-rear-motor-mount-stud.html)) \\ | ||
| Line 88: | Line 89: | ||
| ===== 1952-1981 rear mounts ===== | ===== 1952-1981 rear mounts ===== | ||
| - | The old rear mounts and the crankcase have 4 holes. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=1297584&page=19)) \\ | + | The old rear mounts and the crankcase have 4 holes. ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/127032-getting-this-78-back-to-the-way-it-should-be/page19?t=1297584&page=19)) \\ |
| When Harley changed to 2 hole mounts, all they did was knock the front 2 holes off the old mount and later eliminated the 2 front holes in the case. \\ | When Harley changed to 2 hole mounts, all they did was knock the front 2 holes off the old mount and later eliminated the 2 front holes in the case. \\ | ||
| But the hole spacing stayed the same. \\ | But the hole spacing stayed the same. \\ | ||
| So if you want to use a 4 hole mount on a 2 hole case; \\ | So if you want to use a 4 hole mount on a 2 hole case; \\ | ||
| All you have to do, if you should be so lucky to find a steel mount, is saw off the front 2 hole area of the mount. \\ | All you have to do, if you should be so lucky to find a steel mount, is saw off the front 2 hole area of the mount. \\ | ||
| - | If you want to use a 2 hole mount on a 4 hole case, you'll have to stick some short bolts in to plug the 2 unused case holes but it should fit just fine. ((8ball of the XLFORUM http://xlforum.net/forums/showthread.php?t=2031256)) \\ | + | If you want to use a 2 hole mount on a 4 hole case, you'll have to stick some short bolts in to plug the 2 unused case holes but it should fit just fine. ((8ball of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/190594-2-bolt-vs-4-bolt-rear-motor-mount?t=2031256)) \\ |
| - | Here are the 4 kick only (4 bolt) rear motor mounts. ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?p=3204448#post3204448)) \\ | + | Here are the 4 kick only (4 bolt) rear motor mounts. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page9#post2391464)) \\ |
| From left to right (each pic below): | From left to right (each pic below): | ||
| - 1952-1956 k model (iron). \\ Note the smaller hole for kicker shaft. The K kicker shaft used a smaller thrust collar than XL. | - 1952-1956 k model (iron). \\ Note the smaller hole for kicker shaft. The K kicker shaft used a smaller thrust collar than XL. | ||
| - 1957-E1962 (iron). | - 1957-E1962 (iron). | ||
| - | - The third is belived to be an XR or R model (aluminium). \\ It does not use and is not machined for the steel inserts for the lower bolts. \\ It came with a 60 XLR basket. | + | - The third is believed to be an XR or R model (aluminium). \\ It does not use and is not machined for the steel inserts for the lower bolts. \\ It came with a 60 XLR basket. |
| - L1962-up uses the steel inserts for the lower bolts. | - L1962-up uses the steel inserts for the lower bolts. | ||
| - | The first 3 use the 2-1/16" long lower bolts(when not using the passenger peg mount). \\ | + | The first 3 use the 2-1/16" long lower bolts (when not using the passenger peg mount). \\ |
| The late one uses 2-1/4" long lower bolts (when not using the passenger peg mount). \\ | The late one uses 2-1/4" long lower bolts (when not using the passenger peg mount). \\ | ||
| - | {{techtalk:ih:engmech:rear_motor_mounts_1_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?p=3204448#post3204448)) {{techtalk:ih:engmech:rear_motor_mounts_2_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?p=3204448#post3204448)) \\ | + | {{techtalk:ih:engmech:rear_motor_mounts_1_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page9#post2391464)) {{techtalk:ih:engmech:rear_motor_mounts_2_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page9#post2391464)) \\ |
| The key to understanding the evolution of these is knowing that 60-down used a 6 bolt lower battery tray and 61-up used a 4 bolt battery tray. \\ | The key to understanding the evolution of these is knowing that 60-down used a 6 bolt lower battery tray and 61-up used a 4 bolt battery tray. \\ | ||
| Line 112: | Line 113: | ||
| The two bolts at top flange were no longer incorporated into the tray, so the mounts were not milled. \\ | The two bolts at top flange were no longer incorporated into the tray, so the mounts were not milled. \\ | ||
| - | {{techtalk:ih:engmech:rear_motor_mounts_3_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?p=3246441#post3246441)) {{:techtalk:ih:engmech:rear_motor_mount_by_murph1068.jpg?direct&300|}} ((photo by murph1068 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075011)) \\ | + | {{techtalk:ih:engmech:rear_motor_mounts_3_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page9#post2391464)) {{:techtalk:ih:engmech:rear_motor_mount_by_murph1068.jpg?direct&300|}} ((photo by murph1068 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/198269-1960-xlch-resto-rider?t=2075011)) \\ |
| More 16201-58 pics: \\ | More 16201-58 pics: \\ | ||
| This mount could be had in 1960 for $25.70 \\ | This mount could be had in 1960 for $25.70 \\ | ||
| - | {{techtalk:ih:engmech:16201-58_motor_mount_pic_1_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1062720&page=21)) {{techtalk:ih:engmech:16201-58_motor_mount_pic_2_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1062720&page=21)) \\ | + | {{techtalk:ih:engmech:16201-58_motor_mount_pic_1_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page21?t=1062720&page=21)) {{techtalk:ih:engmech:16201-58_motor_mount_pic_2_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page21?t=1062720&page=21)) \\ |
| - | {{techtalk:ih:engmech:16201-58_motor_mount_pic_3_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1062720&page=21)) {{techtalk:ih:engmech:16201-58_motor_mount_pic_4_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1062720&page=21)) \\ | + | {{techtalk:ih:engmech:16201-58_motor_mount_pic_3_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page21?t=1062720&page=21)) {{techtalk:ih:engmech:16201-58_motor_mount_pic_4_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/112326-a-photo-catalog-of-ironhead-parts/page21?t=1062720&page=21)) \\ |
| 16203-67 pics: \\ | 16203-67 pics: \\ | ||
| Line 126: | Line 127: | ||
| ===== 1982-1990 Rear Mounts ===== | ===== 1982-1990 Rear Mounts ===== | ||
| - | 1982-1990 mounts offset the engine 13/32" to the left of the position for pre 1982 engines and don't have the hole in them for the kicker shaft to go through. ((billeuze of the XLFORUM http://xlforum.net/forums/showthread.php?p=5791608&highlight=motor+mount#post5791608)) \\ | + | 1982-1990 mounts offset the engine 13/32" to the left of the position for pre 1982 engines and don't have the hole in them for the kicker shaft to go through. ((billeuze of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/198233-cracked-motor-mount/page4?highlight=motor+mount#post4358785)) \\ |
| 1984-1990 Rear Mount: \\ | 1984-1990 Rear Mount: \\ | ||
| Line 173: | Line 174: | ||
| * **1977-1985**. All 3 holes are slotted. \\ This should not be used on 76< frames. | * **1977-1985**. All 3 holes are slotted. \\ This should not be used on 76< frames. | ||
| - | | 1957-E1971 straddle mount ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=5079143&postcount=8)) | L1971-1976 straddle mount ((photo courtesy of TomsCyberShop.com www.TomsCyberShop.com)) | | + | | 1957-E1971 straddle mount ((photo by Ebay seller, animalhouse2010 [[https://www.ebay.com/str/animalhouse2010?_trksid=p2047675.l2563|Link to Ebay Store]] ))| L1971-1976 straddle mount ((photo courtesy of TomsCyberShop.com www.TomsCyberShop.com)) | |
| - | |{{techtalk:ih:engmech:sportster_top_mount_1_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ih:engmech:motor_mount_l1971-1976_16250-57_by_tomscybershop.jpg?direct&300|}}| | + | |{{:techtalk:ih:engmech:motor_mount_center_straddle_1957-e1971_16250-75_by_animalhouse2010.jpg?direct&300|}}|{{:techtalk:ih:engmech:motor_mount_center_straddle_l1971-1976_16250-57_by_tomscybershop.jpg?direct&300|}}| |
| | 1958 XLC / XLCH, 1965-1976 XLH/XLCH Cross Brace ((photos courtesy of Ebay seller, rdpierce13. [[https://www.ebay.com/sch/rdpierce13/m.html?item=152823091671&ul_noapp=true&rt=nc&_trksid=p2047675.l2562|Link to seller's items for sale]] )) || Measurements taken on after market mounts. ((photo by wagoneer12 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1836118&page=2)) | | | 1958 XLC / XLCH, 1965-1976 XLH/XLCH Cross Brace ((photos courtesy of Ebay seller, rdpierce13. [[https://www.ebay.com/sch/rdpierce13/m.html?item=152823091671&ul_noapp=true&rt=nc&_trksid=p2047675.l2562|Link to seller's items for sale]] )) || Measurements taken on after market mounts. ((photo by wagoneer12 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1836118&page=2)) | | ||
