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techtalk:evo:engmech03a [2021/07/18 06:11] – [Loose Head Bolt Studs] hippysmacktechtalk:evo:engmech03a [2024/01/03 20:54] (current) – hippysmack
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 The two side by side bolt holes on the right side in the pic below are each drilled into the opposing holes and tapped. \\ The two side by side bolt holes on the right side in the pic below are each drilled into the opposing holes and tapped. \\
 So each hole is depending, in part, of the strength of the other. \\ So each hole is depending, in part, of the strength of the other. \\
-With the bolts loosening, it is at least suspect that the threads or the hole strength is compromised. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074117&page=2)) \\+With the bolts loosening, it is at least suspect that the threads or the hole strength is compromised. ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/197474-leaking-head-gasket-loose-head-bolts/page2?t=2074117&page=2)) \\
  
-|  Weakest head stud holes in the case. ((photo by Hippysmack))  |  Head bolt pulled out of the case. ((photo by Blue Scoot of the XLFORUM http://xlforum.net/forums/showthread.php?p=5793625))  |+|  Weakest head stud holes in the case. ((photo by Hippysmack))  |  Head bolt pulled out of the case. ((photo by Blue Scoot of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page5#post4360678))  |
 |{{:techtalk:evo:engmech:weakest_cylinder_bolt_threads_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:head_bolt_pulled_out_by_blue_scoot.jpg?direct&300|}}| |{{:techtalk:evo:engmech:weakest_cylinder_bolt_threads_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:head_bolt_pulled_out_by_blue_scoot.jpg?direct&300|}}|
  
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 This made removing the stud with an 18" pipe wrench easier the next day. \\ This made removing the stud with an 18" pipe wrench easier the next day. \\
 {{:techtalk:evo:engmech:stuck_cylinder_stud_removal_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:stuck_cylinder_stud_removal_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
- 
  
 ===== Stud Removal ===== ===== Stud Removal =====
  
 ==== Using stud removal tools to loosen the stud ==== ==== Using stud removal tools to loosen the stud ====
- 
 |{{:techtalk:evo:engmech:bent_socket_ext_while_removing_cylinder_stud_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:broken_stud_extractor_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:damaged_cylinder_stud_while_removing_by_hippysmack.jpg?direct&300|}}| |{{:techtalk:evo:engmech:bent_socket_ext_while_removing_cylinder_stud_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:broken_stud_extractor_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:damaged_cylinder_stud_while_removing_by_hippysmack.jpg?direct&300|}}|
- 
  
 ==== Using a pipe wrench to loosen the stud ==== ==== Using a pipe wrench to loosen the stud ====
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 You just have to find a way to make the wrench bind against the stud. \\ You just have to find a way to make the wrench bind against the stud. \\
  
-|If the wrench doesn't grip, make it bind on the stud.  ((photo by Blue Scoot of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074117&highlight=head+gasket&page=6))  |+|If the wrench doesn't grip, make it bind on the stud.  ((photo by Blue Scoot of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/197474-leaking-head-gasket-loose-head-bolts/page6?t=2074117&highlight=head+gasket&page=6))  |
 |{{:techtalk:evo:engmech:removing_cylinder_stud_with_pipe_wrench_by_blue_scoot.jpg?direct&300|}}| |{{:techtalk:evo:engmech:removing_cylinder_stud_with_pipe_wrench_by_blue_scoot.jpg?direct&300|}}|
  
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 Be sure to use rags around the bore so as to not get any debris in the engine while removing the stud(s). \\ Be sure to use rags around the bore so as to not get any debris in the engine while removing the stud(s). \\
  
-|  Three jam nuts used here. ((photo by A 4 liter V8 eater of the XLFORUM http://xlforum.net/forums/showthread.php?p=4442041#post4442041))|+|  Three jam nuts used here. ((photo by A 4 liter V8 eater of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/148266-building-a-90-inch-sledge-hammer/page11#post3236162))|
 |{{:techtalk:evo:engmech:tightening_cylinder_-_head_studs_by_a_4_liter_v8_eater.png?direct&300|}}| |{{:techtalk:evo:engmech:tightening_cylinder_-_head_studs_by_a_4_liter_v8_eater.png?direct&300|}}|
-===== Cleaning the Case Threads ===== 
  
 +===== Cleaning the Case Threads =====
 The threads on the head studs as well as in the case need to be clean and free of rust / debris and they need to be straight in order to obtain proper torque on the heads. \\ The threads on the head studs as well as in the case need to be clean and free of rust / debris and they need to be straight in order to obtain proper torque on the heads. \\
  
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 ===== Stripped Case Threads ===== ===== Stripped Case Threads =====
- 
 These could be repaired with Heli-coils. \\ These could be repaired with Heli-coils. \\
 But the repair must be straight with no wobble when drilling. \\ But the repair must be straight with no wobble when drilling. \\

Trace: • REF: Tools - 140 • EVO: Engine Mechanicals • EVO: Engine Mechanicals - Sub-03A • EVO: Engine Mechanicals - Sub-03F