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 84 mm piston comparison Can anyone tell me the advantages of either piston crown design.  The taller (pointier) one seems to me like it would put a lot of the charge pressure on the rings.  Both are JE for a 2.4 Thanks 73 911 Ehttp://forums.pelicanparts.com/uploa...1423505171.jpg http://forums.pelicanparts.com/uploa...1423505196.jpg http://forums.pelicanparts.com/uploa...1423505205.jpg | 
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 no engineers out there that can tell my why JE changed the design?  Supposedly they have the same compression ratio. Chris | 
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