New FR-S BRZ Technology Info! Engine specs, CoG, Drag Coefficient, Dimensions, etc.

[Nambo]

Wow! Awesome info, just in time for lunch time reading.
Thanks Hachi and Aki for releasing and translating!

[Dragonitti]

Hope those internals are thick. 12:5.1 isn't exactly a friendly ratio for throwing F/I on it. Then again, it's running 4 injectors, which is a lot of fuel if you are upgrading them. A few psi will crank out some power at that compression, but it's sketchy.

[Matador]

Originally Posted by Leeky

Its never going to be worth turbocharging this engine if you ask me. The Direct injection and compression just get in the way too much. It'll take a lot less time and money to swap in the Impreza STI 2.0 or 2.5 lump and be done with it.

This is a genuine fear of mine. I do believe this engine has tuning potential. Enormous in fact, and with that, the potential and incentive to unlock the secrets of Toyota's ECU and the D4-S system on their V6 and V8 motors.... However, theoretically it might be so easy to drop in a turbo EJ motor, most ppl just won't bother. Until some bold person steps up and makes some beastly gains while boosting this motor, swapping might just be the ticket, and that would be such a shame.

[serialk11r]

Originally Posted by Kostamojen

I wanted to note this for the people new to Subaru motors here, but Subaru's ALWAYS have a funky dip in the torque curve, supposedly its due to the intake manifolds but I'm not 100% on this.
...stuff

Direct injection is not for high rpm, it is for high torque requirement aka throttle position.

Funky dip in torque curve hmmm...actually you may be right, AVCS is continuous so it can't be that, perhaps it is the intake manifold resonance properties.

Actually I went back and looked, I think it may be that AVCS was not continuous until recently. That would explain it.

The FT curve as I said, is copied from an old Toyota article. For all I'm concerned, it is a 100% match.

[Allch Chcar]

Originally Posted by iggyhop9

27.5 inches of rear legroom. For comparisons sake, 1st gen IS300 had 30 inches and the last gen Celica had 27

27-33" is the average range for this segment.

Originally Posted by Dragonitti

Hope those internals are thick. 12:5.1 isn't exactly a friendly ratio for throwing F/I on it. Then again, it's running 4 injectors, which is a lot of fuel if you are upgrading them. A few psi will crank out some power at that compression, but it's sketchy.

Don't worry Dragonitt, I'll get E85 figured out and you'll be running 20lbs on stock internals before the year ends.

[Giccin]

Originally Posted by Allch Chcar

27-33" is the average range for this segment.



Don't worry Dragonitt, I'll get E85 figured out and you'll be running 20lbs on stock internals before the year ends.

Your link posted in your sig is considered an "attack" page.. or a page that contains a Virus. lol

[themali]

Originally Posted by Liftcontrol

100hp/liter, normally aspirated; Not bad

seems average. I was hoping for 110 hp/l, especially with that compression ratio. compared to the Honda K20A which was over ten years ago.

Engine type K20A
Cylinders/valves Watercooled IL-4
Bore and Stroke (mm) 86.0 x 86.0
Piston displacement (cc) 1998
Compression ratio 11.5
Max power (NET) kW(PS)/rpm 162(220)/8000
Max torque (NET) N.m(kg.m)/rpm 206(21.0)/7000

[skinsfn36]

I think this motor must be held back somehow(possibly the cat(s) for emissions), I think with a good tuning solution and full NA bolt ons, one can hopefully expect 220whp

[serialk11r]

Originally Posted by themali

seems average. I was hoping for 110 hp/l, especially with that compression ratio. compared to the Honda K20A which was over ten years ago.

Engine type K20A
Cylinders/valves Watercooled IL-4
Bore and Stroke (mm) 86.0 x 86.0
Piston displacement (cc) 1998
Compression ratio 11.5
Max power (NET) kW(PS)/rpm 162(220)/8000
Max torque (NET) N.m(kg.m)/rpm 206(21.0)/7000

Exactly, this is why there's reason to believe there is untapped potential and possible future improvements. Remember, single cam profile! If they throw Valvematic on this it can easily gain another few hundred rpms.

[KaliKev]

Originally Posted by skinsfn36

I think this motor must be held back somehow(possibly the cat(s) for emissions), I think with a good tuning solution and full NA bolt ons, one can hopefully expect 220whp

That's exactly what I am aiming for, if FI is too much $ and unreliable.

[serialk11r]

220 not at the wheels, at the flywheel I think so. 220 at the wheels is like 250 brake, which is not happening at this rev limit.

[Allch Chcar]

Originally Posted by Giccin

Your link posted in your sig is considered an "attack" page.. or a page that contains a Virus. lol

Huh, I wonder when that happened. It was fine for years, I even checked it before I linked it. They must have been attacked recently. I'll remove it for now.

Thanks Giccin!

[Snoopyalien24]

Yeah what's up with the Center of gravity? Not that it isn't bad, but, wasn't it supposed to be the lowest?

[Snoopyalien24]

Originally Posted by skinsfn36

I think this motor must be held back somehow(possibly the cat(s) for emissions), I think with a good tuning solution and full NA bolt ons, one can hopefully expect 220whp

What type of bolt ons do you mean?