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ข้อความ:: [QUOTE="Dr. Jeff Harper, post: 539042, member: 22311"]Update Two weeks ago I blew the head gasket at the # 1 cylinder.  The 3JZ has higher compression than a 2JZ and, combined with a poor header design, caused too much cylinder pressure in that cylinder.  So, I had a new, bigger, longer, and better made.  I also adjusted the camshaft overlap to take out a little cylinder pressure as well. I took it to the race track last night (21/11/08) to see how it would run. Last night was a great testing session. I am really pleased withmy racer's performance.  Before we went to the line for the first runI told Mac that he would run a (total) et of 11.95.  He ran an 11.98total!  On that run he launched at 2300 against the 2-step limiter,shifted at 5000, and ran 0.9 bar of boost and ran an actual 10.91 withan amazing 1.71 60-foot time.  Amazing because of the low launch rpm. That's about as perfect a launch as you want a bracket racer to be --quick with no tire spin -- so very repeatable and consistent.  The newheader and waste gate arrangement seems to be working  . . .  thesound is different (deeper) . . . it sounds "freed-up" . . . andbreathing better.  Tonight we race.[/QUOTE]