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techtalk:evo:engmech03 [2019/12/09 17:11]
hippysmack [Heads]
techtalk:evo:engmech03 [2020/02/27 04:57] (current)
hippysmack [Base Gasket]
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 ====== Pushrods ====== ====== Pushrods ======
 +====== Gaskets ======
 +Gasket thicknesses are especially useful when setting squish clearance. ((Tomcatt of the XLFORUM)) \\
 +The squish band is the quench area. ((rocketmangb of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2075731&​page=13)) \\
 +The idea is to create turbulence in the chamber which helps the fuel air mix blend and distribute in the chamber. \\
 +So the squish is determined by the length of the barrels and the gaskets PLUS the deck height of the cases from crankshaft centerline. \\
 +(assuming the rods and pistons are correct) to the cylinder base) \\
 +You can buy several different brands / thickness i.e., (.010" and .020" base gaskets) and (.030" and .040") etc.  head gaskets to get the desired numbers. \\
 +[[techtalk:​ref:​svcproc26|See more on the squish band here]] in the REF section of the Sportsterpedia. \\
 +===== Base Gasket =====
 +Harley base gasket (HD 16789-04) measures .014" in thickness and comes in the top end kit (HD 17049-08). \\
 +Cometic has .010" and .020" thick base gaskets. \\
 [[:​techtalk:​menu|{{:​techtalk:​gototechnicalmenu.jpg|}}]] [[:​techtalk:​menu|{{:​techtalk:​gototechnicalmenu.jpg|}}]]