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Old 05-29-2015, 03:26 PM   #91
jaykay
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Join Date: Sep 2009
Location: toronto
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Quote:
Originally Posted by KRAM36 View Post
When I installed the 997 Distribution T, it was fitting right against the Plenum opening. I don't think there is a gap there to create a V and disrupt the air flow. Also going from the larger to smaller opening could increase the air velocity. Maybe The Radium King could give some better insight on this.
"Right against" sounds like the worst condition. Essentially you have a small pipe inside of a large pipe with flow going to and into the small pipe. The flow hits the edge of the small pipe. This arrangement is covered by the boot. Sketch it out and you will have it

An increase in velocity may be good here but in this case it is accomplished in an abrupt turbulent fashion which is probably not beneficial to efficient cylinder filling....it all depends on the whole system.

Bens design would accomplish this velocity incease in a gradual non turbulent fashion which could help cylinder filling. There would also be less stress placed on the boots with an equal diameter arrangement. The spatial restriction imposed by the large 997 outlets is also eliminated.
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