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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Michael,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> I *<b>think</b>* the example was that the vanes act to minimize the air flow from layering out into laminar flow and turbulent flow. I *<b>think</b>* it keeps the boundary layer from becoming laminar.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> FWIW, Chuck Engles<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> DeTomaso [mailto:detomaso-bounces@poca.com] <b>On Behalf Of </b>michael@michaelshortt.com<br><b>Sent:</b> Sunday, February 09, 2014 5:57 PM<br><b>To:</b> Sean Korb<br><b>Cc:</b> POCA list<br><b>Subject:</b> Re: [DeTomaso] High Ported Iron Closed Chamber 4V head flow results<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p>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. <o:p></o:p></p><p>I don't get why that was an example.<o:p></o:p></p><p>Michael<o:p></o:p></p><div><p class=MsoNormal>On Feb 9, 2014 6:47 PM, "Sean Korb" <<a href="mailto:spkorb@gmail.com">spkorb@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal>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>> _______________________________________________<br>><br>> Detomaso Forum Managed by POCA<br>><br>> DeTomaso mailing list<br>><br>> <a href="mailto:DeTomaso@poca.com">DeTomaso@poca.com</a><br>><br>> <a href="http://poca.com/mailman/listinfo/detomaso_poca.com" target="_blank">http://poca.com/mailman/listinfo/detomaso_poca.com</a><br>><br>><br>> _______________________________________________<br>><br>> Detomaso Forum Managed by POCA<br>><br>> DeTomaso mailing list<br>> <a href="mailto:DeTomaso@poca.com">DeTomaso@poca.com</a><br>> <a href="http://poca.com/mailman/listinfo/detomaso_poca.com" target="_blank">http://poca.com/mailman/listinfo/detomaso_poca.com</a><br>><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>_______________________________________________<br><br>Detomaso Forum Managed by POCA<br><br>DeTomaso mailing list<br><a href="mailto:DeTomaso@poca.com">DeTomaso@poca.com</a><br><a href="http://poca.com/mailman/listinfo/detomaso_poca.com" target="_blank">http://poca.com/mailman/listinfo/detomaso_poca.com</a><o:p></o:p></p></div></div></body></html>