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techtalk:ref:engmech02c [2018/08/31 02:08] – created hippysmacktechtalk:ref:engmech02c [2024/01/14 21:00] (current) – hippysmack
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 ====== REF: Engine Mechanicals - Sub-02C ====== ====== REF: Engine Mechanicals - Sub-02C ======
 ====== Ring Gap Orientation ====== ====== Ring Gap Orientation ======
 +Ring Gap Positions during Installation:
 +Exact ring gap orientation should be with the documentation that comes with a new set of rings. \\ 
 +The FSM's say to space the gaps an equidistant around piston. That leaves a lot of variance. \\ 
 +The rings will rotate during operation so they will not stay exactly where you put them. \\ 
 +This initial procedure for placing the ring gaps will help keep down blow-by during initial start-up while the engine breaks in the rings. \\
  
 +Orientation of the ring gaps is a debatable subject. \\ 
 +However the one thing most agree upon is the adjacent rings should not be spaced near each other.
 +
 +
 +|These are widely practiced ring gap locations during installation ((drawing by Hippysmack, gap locations by mikethebike61 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/144923-piston-rings-76-ironhead/page2?t=1572784&page=2))|These gap positions are in the 2004 FSM via a drawing. ((04 Sportster FSM pg 3-56))((drawing by Hippysmack)). \\ However, specific rings notations are not (as they are below)|
 +|{{:techtalk:ref:engmech:ring_gap_positions_by_hippysmack.jpg?direct&400|}}|{{:techtalk:ref:engmech:ring_gap_positions_per_the_fsm_by_hippysmack.jpg?direct&400|}}|
  
  
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Trace: • REF: Engine Mechanicals - Sub-02C