Speedmaster heads part 2. Plus intake work
Ok guys excuse the subject change here but my intakes are almost where I’m satisfied with them on Ethans heads and I want to be able to flow the exhaust side to when I throw it on my flowbench so here we go. I probably get more PM messages on the exhaust side than anything but then again I’ve posted less pictures of that side. I get what do you mean by bell shaped, what valve angles do you like, how do you increase airspeed (which I go by more than flow numbers on the exhaust side, etc, etc. first off there is of course more water on this side for cooling, and closer too. Darren Morgan drove into our heads at his theory classes aim for a quiet port but at the same time a fast one. Target for a minimum of 325fps. To do this we shape and widen the bowl which then allows use to widen the badly needed short turn. Push the short turn towards the port exit so it’s not crowding the valve seat. Slightly lay down and radius the short turn and blend into the bowl. Open the exit to the sizing of your header and blend. A lot of times I don’t reread these long posts and fix issues so please excuse that.