Quote:
Originally Posted by Dave-ROR
BMEP difference at peak torque and HP will always be close if the peaks happen close to each other right? Unless torque falls off heavily which won't happen if peak HP follows peak torque within a few hundred RPM. The BMEP for the two peaks being close to each other doesn't sound off to me if the peak RPMs are correct. The ITR is about 2PSI different two with 500RPM seperating the peaks.
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It's not consistent with current engine designs. They are trying to separate the torque from power peak, which improves driveability. Look at more modern engines like the M3's V8, the new Porsche 3.8L, etc... and you don't see the tight rpm range between torque and power like the ITR (which was had no continuous cam phasing ability, just profiles 1 and 2). So that trend, plus the calculated BMEP peak being LESS than it was on the decade+ old BEAMS motor is what I'm basing my assumptions on. (LFA has about 1900 rpm of separation).