Guessing Scion FR-S specs??
 

So I think a thread like this was made a while back, but I'd like to see some more recent opinions (even thought our knowledge of the specs hasnt been really updated :()

What do you think the weight, 0-60 (not saying its important), compression ratio, gear ratios, redline? etc etc....

I wanted to bring this up and realized the current gen civic si has same hp in an inline four, but its porkier at about 2900 lbs! idk about you but i dont want a FR-S weighing that much and being so little it just wouldnt be cool....iirc an autocar interview said the car was about 2450lbs? if so id a lot of us would be happier. (Especially the ones who want turbos more than others)

My (new) guesses:

Weight: 1100-1150kg's (Based on Autocar's article)
0-60: not sure, never paid any attention to them as I don't find them important...
C.R.: at least 11.0:1, I'm guessing 11.5:1. Would be great if they managed 12.0:1!
Gear ratio's: Once again, not sure, but I would expect 1-5 to be short, and 6 to be a lot longer, for highway efficiency.
Redline: Guessing 8000rpm, just because the heads are being developed by Yamaha...

At first I was expecting 1200-1250kg, but after seeing the size of it, and from autocar's article, I think 1100-1150kg should be doable...

What he said.

Redline will need to be at least 8000. Going by the peak BMEP of previous yamaha developed engines with D4s, the FB should make between 150 and 160 ftls of torque. To produce the 200 hp that Toyota has been talking about, the engine will need to produce peak power at at least 6500 to 7000 rpm if not higher. A redline lower than 8000 wouldn't leave much room for a decent powerband.

I think,
Weight: 1100-1150kg's
Power: 190~220hp
0-60: 6~6.5 sec
C.R.: 11.5:1 (wish if they make it lower with same power output)
Gear ratio's: 1-5th close ratio, 6th would be tall
Redline: Guessing 7800rpm

I think toyota might underrate this car in terms of 0-60 and hp. Same way they underrated the supra. In japan it was an agreement, but here they might go after "feel" rather than specs, and to lower insurance. So I'm expecting a ~6.2s 0-60, 200hp, but official specs would be 7s and 180hp.

Higher compression ratio is better. It makes for a more efficient motor all around. The Lexus IS 250 has D4-S and brings 12:1 to the table. I'm hoping for the same here.

I hope they do something like Hyundai where the engine has high compression but can still run on 87 just with reduced power, shouldn't be too hard to implement right?

A knock sensor is pretty standard. With lower octane, it'll retard the timing but I believe it takes several tank loads before it advances it though but don't quote me on that.

Yes 87 would be fine. There is a chance they won't build it for premium anyway but cars have been designed to detune for poor fuel quality for over a decade :thumbsup:.

Close I think. I still hold by my early prediction that the GT5 concept was within 10% of the production car.

I say 1100kg/2420lbs (GT5 is 1000kg/2200lbs), 200 hp (GT5 is 220 hp), 7500 rpm redline (GT5 is 8200).

Further thoughts... I think the power peak will be around 6800 rpm if it's REALLY efficient (small smoothly curved ports sized for enough high velocity air, mid 12's CR, DS4, well designed combustion chamber, low friction, maybe some fancy temp-control coatings, lightweight reciprocating parts, etc...) I also think we will see a better torque curve than we are used to with small Toyota motors, due to the stroke, and if they use the Subaru AVLS.

I'm saying the lower redline, based on the 90mm stroke not going to be super rev-friendly. 7500 rpm will have much less stress on the rods than 8200 rpm.

(all the motor speculation is based on FB20 bore/stroke)

Hey don't hate. Power: weight is where it is at.

I really hope you guys are right and we get a high revving boxer engine. 200 HP should be the bare minimum for this car. 0-60 might be a bit slow on paper though, simply because it will probably require 3 shifts to get there.

When in real world driving does 0-60 matter? It is just a bragging thing. I am more worried about 40-60 or 60-80 times personally.