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techtalk:ref:engmech02 [2020/03/03 01:27]
hippysmack [Thickness]
techtalk:ref:engmech02 [2022/12/05 16:00]
ixl2relax [Zippers Billet Base Kit]
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 ====== Top End ====== ====== Top End ======
   * [[techtalk:​ref:​engmech02d|Measure the Volume of a Combustion Chamber]] (CCing your chamber)   * [[techtalk:​ref:​engmech02d|Measure the Volume of a Combustion Chamber]] (CCing your chamber)
 +
 ====== Heads ====== ====== Heads ======
  
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-====== ​Valves ​======+====== ​Cylinders ​====== 
 + 
 +====== Rings ====== 
 +  * [[techtalk:​ref:​engmech02c|Ring Gap Orientation]] 
 + 
 ====== Pistons ====== ====== Pistons ======
  
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 |Nylon buttons take the place of the retainer rings. ((photo by fdny37 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=204460&​highlight=piston+pin+clips&​page=2))|They can be ordered along with the pistons. ((photo by TT60 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3858110&​highlight=piston+pin+clips))| |Nylon buttons take the place of the retainer rings. ((photo by fdny37 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=204460&​highlight=piston+pin+clips&​page=2))|They can be ordered along with the pistons. ((photo by TT60 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3858110&​highlight=piston+pin+clips))|
 |{{:​techtalk:​ref:​engmech:​wrist_pin_buttons_by_fdny37.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​wrist_pin_buttons_by_tt60.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​engmech:​wrist_pin_buttons_by_fdny37.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​wrist_pin_buttons_by_tt60.jpg?​direct&​300|}}|
-====== Rings ====== 
-  * [[techtalk:​ref:​engmech02c|Ring Gap Orientation]] 
  
 ====== Pushrods ====== ====== Pushrods ======
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 ====== Pushrod Tubes ====== ====== Pushrod Tubes ======
-===== Hammer Performance Billet Base Kit =====+===== Pushrod Base Upgrade Kits ===== 
 + 
 +For 1991-2003 Sportster and 1991-2002 Buell (except Blast):\\ 
 +The stock lower pushrod tube retainer on a 1991-2003 Sportster is a cheapo piece of pot metal that bends and distorts, causing leaks.  
 + 
 +==== Hammer Performance Billet Base Kit ====
   * [[techtalk:​ref:​engmech02f|Installing Hammer Performance Billet Pushrod Base Kit]]   * [[techtalk:​ref:​engmech02f|Installing Hammer Performance Billet Pushrod Base Kit]]
  
-Fits 1991-2003 Sportster and 1991-2002 Buell (except Blast). \\ +((http://​www.hammerperf.com/​xlvalvetrain.shtml#​billetbases)) ​ \\
-The stock lower pushrod tube retainer on a 1991-2003 Sportster is a cheapo piece of pot metal that bends and distorts, causing leaks. ​((http://​www.hammerperf.com/​xlvalvetrain.shtml#​billetbases)) ​ \\+
  
-These pushrod tube bases are stronger than the stock parts replace the cheap stock pushrod bases using your stock pushrod tubes. \\+These Hammer Performance ​pushrod tube bases are stronger than the stock parts and replace the cheap stock pushrod bases, but use your stock pushrod tubes. \\
 They are CNC machined by Hammer Performance out of T6061 billet aluminum. \\ They are CNC machined by Hammer Performance out of T6061 billet aluminum. \\
 Each kit comes with two bases, the upper o-rings, the lower seals, and four stainless steel screws. \\ Each kit comes with two bases, the upper o-rings, the lower seals, and four stainless steel screws. \\
  
 {{:​techtalk:​ref:​engmech:​hammerperf_pushrod_bases_1_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​ref:​engmech:​hammerperf_pushrod_bases_2_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​ref:​engmech:​hammerperf_pushrod_bases_1_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack)) {{:​techtalk:​ref:​engmech:​hammerperf_pushrod_bases_2_by_hippysmack.jpg?​direct&​300|}} ((photo by Hippysmack))
 +
 +==== Zippers Billet Base Kit ====
 +
 +Zipper'​s Performance also makes pushrod tube bases that use the stronger billet aluminum to replace the cheap stock pushrod bases.
 +
 +The bases are available as standalone parts (with lower seals) or as kits that include new telescoping pushrod covers.
 +
 +{{:​techtalk:​ref:​engmech:​zippers-pushrodbase.jpg?​direct&​300|}} ((photo by Sportsterpaul))
 +
  
 ====== Aftermarket Rocker Arms ====== ====== Aftermarket Rocker Arms ======
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   * **Evo Sportster / BT Head Gaskets**:   * **Evo Sportster / BT Head Gaskets**:
-  * MLS+  * Cometic ​MLS
     * C9205-030: 3.000" bore, .030" compressed thick.     * C9205-030: 3.000" bore, .030" compressed thick.
     * C9205: 3.000" bore, .051" compressed thick.     * C9205: 3.000" bore, .051" compressed thick.
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     * C9694, 3.750" bore, .030" thick. (sold for Evo BTs)     * C9694, 3.750" bore, .030" thick. (sold for Evo BTs)
     * C9695, 3.750" bore, .040" thick. (sold for Evo BTs)     * C9695, 3.750" bore, .040" thick. (sold for Evo BTs)
-  * Carbon Fiber (CFM-20)+  * Cometic ​Carbon Fiber (CFM-20)
     * C9718: 3.512" bore, .043" thick.     * C9718: 3.512" bore, .043" thick.
-  * Copper+  * Cometic ​Copper
     * C9082: 3-13/​16"​ bore, .043" thick. (sold for Evo BTs)     * C9082: 3-13/​16"​ bore, .043" thick. (sold for Evo BTs)
   * **Ironhead Sportster Head Gaskets**:   * **Ironhead Sportster Head Gaskets**:
-  * Copper+  * Cometic ​Copper
     * Cometic     * Cometic
-      * C9698: 3.425: bore, .020" thick. +      * C9698: 3.425: bore, .020" thick. ​((https://​www.cometic.com/​search.html?​q=C9698)) 
-      * C9565: 3.425: bore, .032" thick. +      * C9565: 3.425: bore, .032" thick. ​((https://​www.cometic.com/​search.html?​q=C9565)) 
-      * C9566: 3.425: bore, .043" thick. ​+      * C9566: 3.425: bore, .043" thick. ​((https://​www.cometic.com/​search.html?​q=C9566))
     * James Gasket     * James Gasket
       * JGI-16769-72-A:​ 1000cc, .016" thick. (1972-E1973 Sportster) ((https://​www.jamesgaskets.com/​product/​jgi-16769-72-a/​))       * JGI-16769-72-A:​ 1000cc, .016" thick. (1972-E1973 Sportster) ((https://​www.jamesgaskets.com/​product/​jgi-16769-72-a/​))
 +      * JGI-16769-73:​ 1000cc, .016" thick. (1973-1985 Sportster) ((https://​www.jamesgaskets.com/​product/​jgi-16769-73/​)) ​
       * JGI-16769-82:​ 1000cc, .045" thick. (1982-1985 Sportster) ((https://​www.jamesgaskets.com/​product/​jgi-16769-82/​))       * JGI-16769-82:​ 1000cc, .045" thick. (1982-1985 Sportster) ((https://​www.jamesgaskets.com/​product/​jgi-16769-82/​))
- 
  
 **James Gasket MLS**: \\ **James Gasket MLS**: \\
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 {{:​techtalk:​ref:​engmech:​cometic_torque_sequence_instructions_by_johnk.jpg?​direct&​400|}} ((photo by JohnK of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1422877&​page=8)) \\  {{:​techtalk:​ref:​engmech:​cometic_torque_sequence_instructions_by_johnk.jpg?​direct&​400|}} ((photo by JohnK of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1422877&​page=8)) \\ 
 ===== Base Gaskets ===== ===== Base Gaskets =====
 +For comparison, OEM base gasket 16789-04 is .014" thick. ((rocketmangb of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2075731&​highlight=gasket+thickness&​page=13)) \\
 +
  
 Cometic: Cometic: