[DeTomaso] modified port plates for 180's

[mark skwarek]

Chuck,
 
Thanks for your comments. I think that Ken sent you an email that clarified my thoughts. I was not talking about stuffing the port. 
 
I have been in touch with Dan numerous times about various build options. I am a supporter of him aand can't wait for his results. They will be a great asset for our community.
 
Mark

--- On Mon, 1/5/09, Charles Engles <cengles at cox.net> wrote:

From: Charles Engles <cengles at cox.net>
Subject: Re: [DeTomaso] modified port plates for 180's
To: ehpantera at yahoo.com
Cc: detomaso at realbig.com
Date: Monday, January 5, 2009, 7:55 PM

Dear Mark,


              Comments:  port plates are "supposed" to work by
"filling in" the dead area in the lower part of the exhaust port
                                 Supposedly there are some flow tests that show
improvement

              Observations:  exhaust flow is way different that intake port
flow velocity and exhaust flow is rather, well, explosive and high velocity.
                                     I can't recall any actual dyno tests
on the benefits of intake and/or exhaust port plates in a 351C

               Real news:  Dan Jones happens to have a set of the bronze
exhaust Port Stingers and expects to test them in the famous Grand Cleveland
351C Dyno Extravaganza.   If you can wait, then you should have some real world
data.   If you would like to contribute to Dan's great work, then email Dan
to be directed to the PayPal account for donations.


                                         Warmest regards,  Chuck Engles





----- Original Message ----- From: "mark skwarek"
<ehpantera at yahoo.com>
To: <detomaso at realbig.com>
Cc: "Ken Green" <kenn_green at yahoo.com>; <jderyke at aol.com>
Sent: Sunday, January 04, 2009 10:21 PM
Subject: [DeTomaso] modified port plates for 180's


I am interested if comments regarding the use of port plates to modify the
exhaust port so that it does not make a 90 degree turn exiting the head
perpendicular to the cylinder bore, but rather making a shallower turn which
results in the port comming out the top of the head adjacent to the valve cover.
The head would be wider than stock but not as wide as when you add the width of
the frist header bend. We try to make the intake as straight as possible but I
haven't seen anything about making the exhaust as straight as possible.

Is there anything to be gained? If so what and how much?

This should work well with 180 degree headers.
Mark





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