Originally Posted by czar07 (Post 188582)

that torque graph looks terrible

Originally Posted by Dimman (Post 188623)

Is this an actual engine dyno or a normal Dynapack hub dyno converting.
@Scion FR-S: engine dynos measure crank not wheel hp so it would represent the curve associated with the manufacturers numbers.

As for the shape, the scales are just different it's not as wild as it looks.

Originally Posted by Scion FR-S (Post 188656)

So why is peak torque showing at 15 lb-ft over rated? Makes no sense.

Originally Posted by Scion FR-S (Post 188656)

So why is peak torque showing at 15 lb-ft over rated? Makes no sense.

Originally Posted by Dimman (Post 188660)

Because it's a conversion it has to estimate the losses from the flywheel to the dyno.

(It's not an actual engine dyno graph.)

Originally Posted by Scion FR-S (Post 188656)

So why is peak torque showing at 15 lb-ft over rated? Makes no sense.

Originally Posted by carbonBLUE (Post 188662)

inside line got 143 tq to the ground, 165-170 crank tq est is expected :D the hp is spot on though

real specs of the engine are ~200 crank hp and ~169 tq and not the 200hp 151 tq advertised, which is a good thing,

kinda like how fords mustang brochure says 412 hp but they dyno in at 398 whp... there's a lot of cars out there under/overrated on hp and tq

and this...


but i think its good enough estimate....

Originally Posted by chulooz (Post 188678)

Proving tq estimates
across engine styles and brands is guesswork or mishandled information. I too would like to see nonconverted figures though.

Originally Posted by chulooz (Post 188678)

Proving tq estimates
across engine styles and brands is guesswork or mishandled information. I too would like to see nonconverted figures though.

Originally Posted by Dimman (Post 188676)

What's funny is I've written PAGES of posts in the Engine Tech thread about how I think this engine should have 170+lb-ft of torque based on comparisons to the old 3SGE BEAMS motor and the D4-S gains on the 2GR. Compression ratio, fuel mixture, intake velocity, BMEP were all considered...

Would be nice to be vindicated, but can't take it from a conversion. Soon maybe.

Originally Posted by Ryephile (Post 190329)

Good ole DynaPack. This plot looks like it was trying to show flywheel numbers instead of axle numbers. As usual, it would've been better to see raw data, but in the forum landscape of info vulturing, we'll take what we can get. Strangely, another example where the engine dies soon after 6k RPM. :(

-->carbonBLUE: what shop was this done at?

Originally Posted by coyote (Post 190947)

The way the torque drops by more than 10% in 500rpm looks nothing short of hideous.

Originally Posted by ichitaka05 (Post 189474)

5. Power - Several shops have already seen the dyno FR-S and all of them saw that dip in TQ. More technical drop of torque between 3,000RPM to 4,500RPM, 20TQ drop in 4,000RPM. A while driving in, I've always check the RPM to check for feeling of torque lost in 3,000RPM~4,500RPM and I seriously couldn't feel the torque losted.

Originally Posted by carbonBLUE (Post 191427)

yeah but its been noted that some people cant feel it....