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techtalk:ih:engmech04 [2022/10/05 22:42]
hippysmack [Sub-Documents]
techtalk:ih:engmech04 [2022/10/05 22:56]
hippysmack
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 {{:​techtalk:​ih:​engmech:​74_xlh_rocker_box_by_the_doctor71.jpg?​direct&​300|}} ((photo by The Doctor71 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1946888)) \\ {{:​techtalk:​ih:​engmech:​74_xlh_rocker_box_by_the_doctor71.jpg?​direct&​300|}} ((photo by The Doctor71 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1946888)) \\
  
-===== 57-70 =====+===== 1957-1970 =====
  
 |  Rocker boxes from a 68 XLCH. ((photos by ChefRex of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​page=2&​t=1946888)) ​ ||| |  Rocker boxes from a 68 XLCH. ((photos by ChefRex of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​page=2&​t=1946888)) ​ |||
 |{{:​techtalk:​ih:​engmech:​68_rocker_boxes_1_by_chefrex.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​68_rocker_boxes_2_by_chefrex.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​68_rocker_boxes_3_by_chefrex.jpg?​direct&​300|}}| |{{:​techtalk:​ih:​engmech:​68_rocker_boxes_1_by_chefrex.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​68_rocker_boxes_2_by_chefrex.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​68_rocker_boxes_3_by_chefrex.jpg?​direct&​300|}}|
-===== 71-85 (except XLX) =====+===== 1971-1985 (except XLX) =====
 The 71 up have a thicker rib across the pushrod side and most people feel they'​re more rigid. ((mrmom9r of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1682099&​highlight=splitting+rocker+box)) \\ The 71 up have a thicker rib across the pushrod side and most people feel they'​re more rigid. ((mrmom9r of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1682099&​highlight=splitting+rocker+box)) \\
 They do look better under a strobe light than the early ones. \\ They do look better under a strobe light than the early ones. \\
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 |{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_4_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_3_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_2_by_sc72.jpg?​direct&​250|}}| |{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_4_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_3_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_2_by_sc72.jpg?​direct&​250|}}|
 |{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_1_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_5_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_6_by_sc72.jpg?​direct&​250|}}| |{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_1_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_5_by_sc72.jpg?​direct&​250|}}|{{:​techtalk:​ih:​engmech:​71-85_rocker_boxes_6_by_sc72.jpg?​direct&​250|}}|
 +
 +===== Rocker Box Gaskets =====
 +1957-1969 Sportsters did not come factory with rocker box gaskets. \\
 +Instead, a layer of silver paint was applied between each rocker box and head for sealing. \\
 +In 1970, a gasket (17536-70) was introduced and retros back to 1957 models. The same gasket is used on eack rocker box (2 required). \\
 +
 +{{:​techtalk:​ih:​engmech:​1957-1985_sportster_rocker_box_gaskets_17536-70_by_jrsvintageharley1990.jpg?​direct&​400|}} ((photo courtesy of Ebay seller, jrsvintageharley1990. [[https://​www.ebay.com/​str/​jrsvintageharleyparts?​_trksid=p2047675.l2563|Link to Ebay Store]] ​ )) \\
 +
 ====== Rocker Arms ====== ====== Rocker Arms ======
 |  Rocker arms on a 69 XLH ((photos by austinshovel of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1913766&​highlight=rocker+arm+bushings)) ​ || |  Rocker arms on a 69 XLH ((photos by austinshovel of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1913766&​highlight=rocker+arm+bushings)) ​ ||