Just a couple of brief remarks. First, it's probably the most efficient NA engine I have seen in the time I have been working with Bryn and Sonny; power per liter is at the extreme limits of Hayabusa engines. Secondly, the dyno conditions were lousy and the correction factor was 1.06 and we know from prior experience that a CF of 1.0 will produce more power than a CF of 1.06 for any given combination. Third, the engine is simply an extension of a "formula" we have been using for larger engines, including flat top pistons, but everything is bigger and the camshafts incorporate extended duration to match the stroke. And fourth, the testing after mapping did not include a pull with a pipe we designed and which we know from track testing to produce the highest speeds. The pipe in question is shorter and, as an interesting aside, we picked up 5 HP on a different engine (1507) by simply installing a shorter cannister which allowed us to move towards a better tuned length and improve scavenging. It's been a fun project and Sonny was relentless and spared no expense in eliminating weight and Bryan, as usual, was meticulous in selecting tolerances, specs and assemblying the engine.
