Thread: compression ?
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maximo maximo is offline
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Join Date: Oct 2008
Posts: 55
Originally Posted by fredmeister View Post
I figure shouldn't the values be roughly compression ratio times 14.7psi plus 1 times 14.7psi.
For example at 7 to 1 compression 7x14.7 = 102.9 plus 14.7 or 117.6psi.
This assume 100% VE or Volumetric efficiency. In reality it must be less because 100%VE is not attainable at low rpm speeds especially with our manifold design.
This is alot lower number than 120 or 130psi that most guys are quoting. Just theoretically what I suspect to be the case.
Someone else chime in please.....sanity check needed.

Thanks ! .... good information !
Old 02-08-2009, 05:53 PM
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