thats_a_five Posted August 6, 2014 Report Share Posted August 6, 2014 Yes, you understand correctly. The piston should not contact the head or spark plug. In fact, if the piston does hit, bad things happen. New gasket sets come with multiple base gaskets of different thickness. Thinner gasket will reduce the squish and give higher compression. Thicker gasket will give less squish and lower compression. I know a dealer who always uses the thickest gasket because it eliminates the chance of the piston hitting the head or plug, it makes the bike easier to kick over, and only really top riders would notice the difference in power. 1 Quote Link to comment Share on other sites More sharing options...
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