Let's also look at this from the perspective that Superflow does
per the original work of Bernoulli.
The 'Most' air one can flow on a bench is equivalent to
146 cfm per 'Each' Sq." of flow area.
So with the 1.9L we have 7.15 Sq." of flow area.
If we multiply 7.15 by 146, we arrive at a flow rate of 1,044 cfm.
The above does not include the increase in the mass flow / density ratio.
With the 2.3L the exducer has 9.48 Sq." of flow area.
This then would give a flow rate of 1,384 cfm.
The difference in flow rates amounts to 340 cfm.
The potential fwHP would be equivalent to. . .
=> (340 / 1.5)= 226.72 fwHP on Gasoline.
To further quantify this, all one would have to do
is take a 'Junk' manifold, cut it up, mount it on
a flow bench and find out how much the
exducer actually flows.
The exducers are triangular in shape.
Triangular shapes flow well. . . .
=================================
Finally; if we multiply 146 cfm by the value of 2.4 as I
did within my post with Random / Jesse, we find that
the velocity would be (146 * 2.4)= 350 fps.
Per Bernoulli, this is justified by the following formula when flowing at 28" of water:
=> Sqrt ((28) * 66.2)= 350.2975 fps.
And if we divide the value of 350 fps by 2.4, we get the value of 146 cfm.
But on a 'Live' engine the velocity is doubled from the value given on a bench.
That is the basic / fundamental reason for using 28" of water on an bench,
as the 'Engine' velocity can easily be calculated in your head.
So if we double the value of 350 we arrive at 700 fps.
Air travels in an engine at ~1116 fps.
If we divide 700 by 1116 we arrive at a Mach number of 0.62.
For any engine component to flow at Mach .62 it has to
be a well developed component.
NHRA Pro Stock heads will flow 146 cfm, or Mach .62
through the valve seat. The Pro Stock heads I have
had experience with have an area at the valve seat
of 4.37 Sq."
So they would flow. . .
=> (4.37 * 146)= 638 cfm.
That would then translate to a potential fwHP of. . .
=> (638 * 2.4)= 1,531 fwHP on a 500 cid NA Engine.
**** Above the value of 2.4 denotes how many fwHp
a well flowing / refined cylinder head will make per cfm flowed.
But those highly refined cylinder heads are made
at a cost of about $500,000..
Our heads cost a lot less and also flow a lot less per Sq."
And one can purchase a very, very good blower for less money..LOL
Cheers