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					Originally Posted by  Barry Bordes
					 
				 
				What is the value of Line 1-2 for a 13B Rotary?  
 
(Using a VE of 100)it would be 654cc...   
 
and it would look like this, but the VE would actually be lower because of the still opened intake port and the trailing spark-plug hole spit-back.
 
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 That's an idealized otto cycle Barry.  For all engines there's going to be descrepancies and variations from that.  I don't think there's a p-v diagram out ther for the 13B at least not to my knowledge.  I'll have to check the SAE papers.