Quote:
Originally Posted by Ryephile
I can't imagine they actually put that engine in the car for the US market. The 2.0L n/a flat-4 currently makes about 140 HP. Having that engine in the FT-86 would be a major disappointment, resulting in ~10 second 0-60 times. That's not acceptable these days.
The "new" 2.5L n/a flat-4 that debuted in the 2011 Forester makes 170HP & 174Lb/Ft. That would be the bare minimum power to make the FT work as an entry sports car. At 2700 pounds & 170HP, that would put the FT-86 at 15.9:1 pounds per HP ratio, a bit slower the current Miata, which has a 15.0:1 pounds per HP ratio.
That said, I don't believe this engine will find itself in the FT-86 either. The Toyota & Subaru executives have been adamant that the engine will be a " high-revving" oversquare engine [short stroke, big bore]. The new 2.5L n/A flat-4 in the Forester is undersquare at 90mm stroke and 84mm bore.
The media has been adamant the car will have a high-revving 2.0L engine. In order to achieve "optimum power-to-weight ratio", the car will have to be on-par with the Miata, IMO, the de-facto reference in affordable fun to drive sports cars. This means the FT-86 in 2700 pound production guise will need exactly 180HP to achieve 15.0:1 pounds-per-HP that will result in quick-enough high 6's in 0-60 runs. If the engine miraculously revs to 8k RPM, it'll only need a totally possible 120 Lb/Ft to achieve the 180HP figure. Think RX-8 in terms of powerband.
That's my deduction.  |
You're forgetting the FB20 hasn't debuted in any cars yet, and is rumored to
start at 148hp. The FB25 in the Forrester is the econobox / no performance within 10 miles of here, version.
Neither of which are going to be/are equipped with Toyota's D4-S direct injection system/ heads. I'm not defending the FB20 but its seems HIGHLY unlikely that Subaru will fork out a completely different 2.0L boxer for the Toyobaru, especially given Subaru's history of...well, having just one 2.0L boxer.
Not only that but the FT-86 is being engineered around the fact that its going to have a 2.0L boxer under the hood. Anything different and they risk completely throwing off the balance and symmetry they've spent so much time engineering.
Honestly, don't expect the FT-86's FB20 to be much like the one that comes in the base Impreza.
Think of it like 4A vs. 4A-GE....they both share the same block, but the 4A-GE is a completely different kind of engine.
Also the weight is still very much speculation, and I still argue that 2700lbs would be a heavy mark for this car. 2500-2600 should be very doable. You're entire premise is around an imaginary 2700lb mark.