<p dir="ltr">Not sure why the Jet engine was used as an example, those S shaped port directors in those engines are designed to slow the air down by several hundred miles per hour before it enters the jet engine.<br>
SST and SR71 did too.<br>
Why would you want to slow down your fuel air mix? Performance items like Blowers and Superchargers are used to increase the speed and pressure to attain greater performance. </p>
<p dir="ltr">I don't get why that was an example.</p>
<p dir="ltr">Michael</p>
<div class="gmail_quote">On Feb 9, 2014 6:47 PM, "Sean Korb" <<a href="mailto:spkorb@gmail.com">spkorb@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I'm not sure if this is germane but I am utterly fascinated.<br>
<br>
<a href="http://speedtalk.com/forum/viewtopic.php?t=4785" target="_blank">http://speedtalk.com/forum/viewtopic.php?t=4785</a><br>
<br>
<br>
On Sun, Feb 9, 2014 at 5:55 PM, Charles Engles <<a href="mailto:cengles@cox.net">cengles@cox.net</a>> wrote:<br>
> Dear Dan,<br>
><br>
><br>
> You wrote: "....and shear vanes screwed into the intake port<br>
> floors."<br>
><br>
> For the amateur engine builder, what are shear vanes?<br>
><br>
> Very curious, Chuck Engles<br>
><br>
> -----Original Message-----<br>
> From: DeTomaso [mailto:<a href="mailto:detomaso-bounces@poca.com">detomaso-bounces@poca.com</a>] On Behalf Of Daniel C<br>
> Jones<br>
> Sent: Sunday, February 09, 2014 4:24 PM<br>
> To: POCA list<br>
> Subject: [DeTomaso] High Ported Iron Closed Chamber 4V head flow results<br>
><br>
> A while back, Dave McLain flowed a set of old iron closed chamber 4V heads<br>
> with the 1970's Pro Stock style high port exhaust plate and shear vanes<br>
> screwed into the intake port floors. I thought I'd share the results.<br>
> Flowed on a Super Flow bench. Tested at 10" and converted to 28". 2.19"<br>
> intake valve and 1.71" exhaust. Completely stock combustion chambers.<br>
><br>
> Lift Intake Exhaust<br>
><br>
> Inch CFM CFM<br>
><br>
> 0.025 15.9 10.2<br>
><br>
> 0.050 33.2 28.5<br>
><br>
> 0.100 65.6 60.0<br>
><br>
> 0.150 100.6 89.0<br>
><br>
> 0.200 137.8 109.8<br>
><br>
> 0.250 167.6 124.1<br>
><br>
> 0.300 195.8 141.4<br>
><br>
> 0.350 224.0 155.4<br>
><br>
> 0.400 245.6 166.8<br>
><br>
> 0.450 261.4 176.7<br>
><br>
> 0.500 278.8 185.3<br>
><br>
> 0.550 289.7 194.7<br>
><br>
> 0.600 300.9 204.2<br>
><br>
> 0.650 312.1 215.2<br>
><br>
> 0.700 322.0 225.8<br>
><br>
> 0.750 325.7 234.4<br>
><br>
> 0.800 307.8 239.7<br>
><br>
> Not too bad for 1970's small block cylinder heads.<br>
><br>
> Dan Jones<br>
><br>
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><br>
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><br>
<br>
<br>
<br>
--<br>
Sean Korb <a href="mailto:spkorb@spkorb.org">spkorb@spkorb.org</a> <a href="http://www.spkorb.org" target="_blank">http://www.spkorb.org</a><br>
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382<br>
"The more you drive, the less intelligent you get" --Miller<br>
"Computers are useless. They can only give you answers." -P. Picasso<br>
<br>
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</blockquote></div>