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techtalk:evo:engmech04b [2019/05/05 01:35]
hippysmack [Stabilizing Noisy Rocker Arm Shafts]
techtalk:evo:engmech04b [2020/06/05 20:54]
hippysmack [Clearancing the Rocker Boxes]
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 If problems are found, below are some examples of how those have been addressed. \\ If problems are found, below are some examples of how those have been addressed. \\
 ====== Clearancing the Rocker Boxes ====== ====== Clearancing the Rocker Boxes ======
 +Rocker shaft to Rocker box clearance for all XL’s is 0.0007” to 0.0022”. ((2000 MMI Documents)) \\
 +
 High lift cams or changes in the valve springs can cause contact in the rocker box. ((Scuba10jdl of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5601873&​highlight=rocker+wear#​post5601873)) \\ High lift cams or changes in the valve springs can cause contact in the rocker box. ((Scuba10jdl of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5601873&​highlight=rocker+wear#​post5601873)) \\
 When you have high lift cams, as the rockers push your valves open they are also putting a sideways pressure on the valve stems. ((mikeLI_77 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5601873&​highlight=rocker+wear#​post5601873)) \\ When you have high lift cams, as the rockers push your valves open they are also putting a sideways pressure on the valve stems. ((mikeLI_77 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5601873&​highlight=rocker+wear#​post5601873)) \\
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 |After clearancing. ((photo by aswracing of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5489961))|Top view ((photo by isiahstites of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=51598&​page=10))| |After clearancing. ((photo by aswracing of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5489961))|Top view ((photo by isiahstites of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=51598&​page=10))|
 |{{:​techtalk:​evo:​engmech:​rocker_box_clearance_2_by_aswracing.jpg?​direct&​200|}}|{{:​techtalk:​evo:​engmech:​rocker_box_clearance_2_by_isiahstites.jpg?​direct&​300|}}| |{{:​techtalk:​evo:​engmech:​rocker_box_clearance_2_by_aswracing.jpg?​direct&​200|}}|{{:​techtalk:​evo:​engmech:​rocker_box_clearance_2_by_isiahstites.jpg?​direct&​300|}}|
 +
 +|  Another rocker clearancing project. ((photos by cjburr of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=44421&​page=13)) ​ |||
 +|{{:​techtalk:​evo:​engmech:​clearancing_rocker_box_2_by_cjburr.jpg?​direct&​300|}}|{{:​techtalk:​evo:​engmech:​clearancing_rocker_box_1_by_cjburr.jpg?​direct&​300|}}|{{:​techtalk:​evo:​engmech:​clearancing_rocker_box_3_by_cjburr.jpg?​direct&​300|}}|
  
 ===== Arm Clearance ===== ===== Arm Clearance =====