Quote:
Originally Posted by serialk11r
Dimman I'm not sure that you can even make strong assumptions based on intake speed with a direct injection system in place; Supposedly they're a game changer. Is it not curious that Toyota uses no lift control on engines with D-4S?
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The 2GRFSE correlates well with the intake speeds. Toyota has only used a lift system on a single North American motor that I can think of, the 2ZZGE, and that is their only motor that shows the tight torque/hp gap.
Oddly, I'm thinking that Valvematic could produce the same effect, but without the 'double' torque curve of the 2ZZGE. Instead of the two humps, Valvematic would likely show a line connecting the low/short cam torque peak (which shows up where I predict) and the high/long cam torque peak (close to the hp peak in the 2ZZGE's case), which actually isn't much more than the other one, but maintains to higher rpm.