Quote:
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T. Okamoto - New Engine Development Subaru
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Are you sure about this? It might be a different Okamoto-san, but I was looking at the "86 Development Story" article, which had this quote:
Quote:
Tada sought advice from Takamitsu Okamoto of the New Engine Development Division, who led engine development for the LFA. There was about three years left before the first vehicle was to roll off the production line at the time -- impossibly late in the game from the standpoint of the typical engine development timeline.
Takamitsu Okamoto
Engine Technology Development Advisor
New Engine Development Division, R&D Group 2
Okamoto: "I was asked how the engine could be made to develop 200 PS. But they also wanted good fuel efficiency. To generate 200 PS with a 2-liter, port-injected engine, you'd have to increase redline to at least 7,600 RPM. At the time, Subaru was considering a bore of about 84mm for its next-generation horizontally opposed engine; it would be difficult to get a large enough valve diameter to achieve 100 PS per liter with that configuration to begin with, even if you ran it at 7,600 rpm or higher. On the other hand, we had to lower the rpm to some extent to ensure good fuel efficiency, and if they wanted to provide performance at the same time, then our D-4S system was the most obvious choice. I also told them that they would have to increase the bore somewhat."
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Another FT-86 fanboy bullet point: the chief engineer of the LFA engine worked on your car, and was the technical inspiration behind the decision to use D-4S.