TwinTurbo.NET: Nissan 300ZX forum - Pulses dont get stacked. Here's the math on that:
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Subject Pulses dont get stacked. Here's the math on that:
     
Posted by Ash's Z on February 15, 2007 at 9:39 PM
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In Reply To Ash you are forgetting that pulses get stacked posted by AzHeat on February 15, 2007 at 09:22 PM
     
Message [ http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=1945556 ]

The pulses are easily making their way to the turbine before the next cylinder enters its exhaust stroke. But again, I think you are referring to the "pulses stacking up" as meaning the pressure within the manifold is increased. These are not one in the same.

Perhaps you are referring to the pressure, as Harry was. The pressure in the exhaust manifold does increase with RPM in a loaded state, but this doesn't affect the flow resistance of the manifold to any considerable amount. The pressure that is built in the exhaust manifold is mostly due to the restriction created by the turbine and housing, however, the gases still have to flow through the manifold and the flowtesting results tell you how well they will do that.




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