Jamie wrote:Have a question, I am using a 4" exhaust stack and am thinking of using an old design that I had laying around. At one time I built a internal damper, never used it and now am asking if the flapper would affect the flow? The flapper is 3/16" plate opens fully. I myself don't think it will have to much of an affect but figured I'd ask you all.
I built an internal damper on my offset and ended up cutting it out. On my pit it did change how the pit cooked when I adjusted the internal damper. I ended up installing a heat deflector plate and controlling the temps using my intake exhaust on the firebox and that works a lot better.