Dan,
I wish now that I had done a better job of recording specific temps on all cylinders, but I did not. I recall a small reduction in temp on #3, but I was focused on #1 as it was my problem child! I should also note that I had previously trimmed the air dam in front of #1 quite a bit before moving the ramp, but that had little effect on cooling #1. I was also breaking in a new engine at that time.
Now, in cruise flight, my #3 is typically the hottest cylinder, but only by a few degrees, and all are below 380 and within 10 degrees or so, depending on leaning.
So to answer your question, there was a small drop in temps on #2 and #3, but I don't recall anything on #4. It is my coolest running, so maybe I don't pay enough attention to that one! Sorry I don't have more specifics...Bottom line is, for me, after I moved the starboard air ramp forward, I had a dramatic (25 degrees or so) reduction in the #1 CHT, and that was my biggest concern at the time. If I were to build another 7, I would trim the ramp and move it forward to match the gap on the port side, from the get go...
Jim
I wish now that I had done a better job of recording specific temps on all cylinders, but I did not. I recall a small reduction in temp on #3, but I was focused on #1 as it was my problem child! I should also note that I had previously trimmed the air dam in front of #1 quite a bit before moving the ramp, but that had little effect on cooling #1. I was also breaking in a new engine at that time.
Now, in cruise flight, my #3 is typically the hottest cylinder, but only by a few degrees, and all are below 380 and within 10 degrees or so, depending on leaning.
So to answer your question, there was a small drop in temps on #2 and #3, but I don't recall anything on #4. It is my coolest running, so maybe I don't pay enough attention to that one! Sorry I don't have more specifics...Bottom line is, for me, after I moved the starboard air ramp forward, I had a dramatic (25 degrees or so) reduction in the #1 CHT, and that was my biggest concern at the time. If I were to build another 7, I would trim the ramp and move it forward to match the gap on the port side, from the get go...
Jim