[Dimman]

Here are some expanded thoughts.

(And as for the torque peak of a 2.0L motor, keep in mind that Yamaha squeezed 159 lb-ft from the 3SGE BEAMS motor at 11.5:1 CR without direct injection. Also 86mm X 86mm by the way...)

Here's where my brain is at right now.

We have been given a couple of weird output figures. They are either completely off the mark (bogus) or we are being played with (reminded of Google bidding in factors of pi for some patents).

Assuming we're being played with by TMC/FHI We've basically been given two BMEP figures. ~186 psi and ~210 psi.

These would equate to the BMEP of the power peak (186 psi) and the BMEP of the torque peak (210 psi). Now working back to power and torque numbers is interesting. (and speculative, but bear with me...)

We can go back from the 210 psi to 170 lb-ft of peak torque, but we don't know where it peaks in the rev range.

As for horsepower we've been given a figure of 200 hp @ 7000 rpm ~186 psi BMEP from) and one of 210 hp @ 6500 rpm. Now if they have 'split' the BMEP leaks, this would mean that the 200 hp @ 7000 rpm is an accurate figure. It's realistic, unlike the 210 @ 6500, so I'm going to use it. Now we have an rpm figure to work with.

Going back to the 2GRFSE, it drops to 90.4% of its max BMEP at 133.33% of the rpm. Put another way its torque peak is at 75% of its power peak. And there are 1600 rpm separating the two.

With the assumptions on the FA20's BMEP figures, it drops to 88.6% of max. But over what rpm range? If we use the 75% of peak power rpm for the torque peak we get 5250 rpm, (a 1750 rpm drop), and interestingly
enough, very close to the 5252 rpm where torque and hp are identical. It is also very close to the average of the two claimed torque peaks (4000+6600)/2= 5300 rpm. Also interesting that Toyota has thrown out minimum torque output *ranges*like 90% of max from 3000-6000 rpm (or whatever the LFA-s range was).


So here is my final prediction:

Peak power of 200 hp @ 7000 rpm (from the brochure and is reasonable)

Peak torque of 170 lb-ft @ 5300 rpm (from the reviews throwing the 170 lb-ft number around plus an improvement over Yamaha's previous best, the BEAMS)

Minimum of 151 lb-ft from 4000-6600 rpm (from the high and low torque predictions, and the brochure)


Redline 7400 rpm (brochure and tacho seen in the race version)

Do I win a prize if I'm right?