Yes, I watched the second test. He used a ring of clay around the intake port that was about 3/4” thick. No exhaust pipe was used.
Not sure what the the original porter used, if anything. What made me suspicious initially was when I went to pick up the heads, I asked about the flow sheet. He said “Oh yeah, almost forgot.” He then proceeded to whip out a notebook and began to write all the numbers down without looking at anything else. Now either he had a photographic memory or he was pulling numbers out his ***.
