Carnut1 wrote:View of widened ssr
Charlie, I see a wider floor and short turn overall.. but IMO you didn't break the floors corners soon enough. Too much straight section after the minor choke point. That's what I was pointing at with the "assymetrical throat" comments. The corners start VERY subtle at the bottom of the seat and start to lay back from there. Start forming the corners of the floor from the bottom of the seat and make it more pronounced to blend into the floors corners. Either side, not too much center, of the apex gets layed back towards the seat.. like small spillways to help gas navigate the turn. I'm tight on time right now but this was a quick grab of one of Chad's exhaust ports.
Hard to see in the pic but even still.. notice Chads corner layback, his whole short turn really, starts considerably earlier than it looks like your port does. Well.. at least from the perspective I can see. One of the reasons I wanted a good shot straight and up into the bowl from the combustion chamber side. Another dead straight down into the bowl for better seeing choke shape would help us determine how you have the choke/short side formed.
PS. won;t be till later but I will snap some pic's of a few heads I have laying around here that will point out the shape I'm getting at here. One's a little d-ported Vortec head that takes a 1.625" OD 16 gauge match formed pipe that flowed 247'ish @.700". 1.54" valve size. Might have been 243 cfm.. have to find my flow sheets to be sure. Hardly did any major work to it.. well, blew the cealing out around the guide and thinned it pretty substantially.. but mostly floor widening and SSR work to settle the floor speeds down was all that it took.
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