Report: BRZ STI Model Already in the Works, No Turbocharger

[Allch Chcar]

Originally Posted by Jordo!

How the fuck are they going to get another 50 bhp out of that motor? There's no way that much was left on the table without boost.

If so, then I'm certainly intrigued to learn why they didn't just offer a more powerful model to begin with in both manufacturer flavors.

250 bhp puts that car in about the same power:weight group as the 370Z. I'd seriously consider that for my next car.

Okay -- Subie or Toyota or both, bring it on, because now we're talking.

Just so everybody knows again, the 250 was not an official number.

Don't get your hopes up Jordo.

[serialk11r]

Perhaps a variable length intake could help, the 1LR-GUE has a similar cam setup, no variable timing other than phasing, and its low end torque is comparable to the FA20 while revving 2000 rpm higher.

I guess it could happen, since this isn't meant to be a poser car I think they could sacrifice a little low end torque, but I'm not sure on the low end combustion stability thing, which is really important for an OEM.

[old greg]

Who said it had to be 250 out of a 2L?

The block has room for 100mm pistons (same bore pitch as the EJ), and the FB it's based on runs a 90mm crank. That's potentially anything up to 2.8L and ~210 ftlbs with similar BMEP.

[mrtodd]

Originally Posted by Dimman

250 hp with a 7500 redline is completely plausible from a 1.6T... Here seagull, here seagull... heh...

Also Serial, I gave a few examples of older motors that made close to 85lb-ft/L without direct injection and with lower compression ratios. Remember I was basing it on the BEAMS which was ~80/L with less CR and no direct injection as well as the 2GRFSE which is 79/L and not a dedicated performance motor (also less CR). And also at the gains the FSE 2GR made over the regular FE.

This motor has 170 lb-ft in it easily so long as they are willing to sacrifice the wide, flat torque curve. Like I said, cams (plus supporting vavletrain), revised intake and exhaust geometry and it will be really close to the GT5 220/170 specs if not even better hp...

Thank you. It seems most people on this forum don't realize how potent an NA motor can be. The fact that this motor has the c/r that it does + direct injection opens it up to substantially greater potential than previous cars/engines mentioned. 250 crank HP out of this motor really isn't as big of a stretch as people think.

Subaru can definitely do it...and if not, the aftermarket scene will take it up.

[daiheadjai]

Correct me if I'm wrong, but if there is to be a higher-strung NA version tuned for even more bHP/liter, wouldn't it make more sense to come from Toyota's engineers rather than Subaru?

Toyota does have some experience in making NA high bhp/liter engines (i.e. 2zz-ge and the LFA engine via Yamaha), but Subaru does not (traditionally more inclined to FI).

That being said, whoever does it, it would still be greatly appreciated.

And out of curiosity, while I wouldn't be surprised if the FA20 has variable valve timing, what about something like VTEC or VVTL-i?

[86fanatic]

FA20 already uses AVCS (Subaru's VTEC) on both exhaust and intake cams.

[dimik252]

how cant you get close 50hp out with Intake, full exhaust and tune? maybe abit aggressive for a daily car but I would want to get at least 50HP more out if I get one.

New cars have so much emissions crap on them.

but anyways I would assume it would be a bigger bore in the sti version.

[Captain Snooze]

Everything's a compromise. Yes, of course Subaru or Toyota could make a highly strung engine but does their business model justify it? That is, would enough people purchase the high-strung model to justify the costs involved in making an engine that is both reliable and will meet the emission regs in 200,000 kilometers time? This is a cheap production motor car. (Yes , know cheap is highly subjective but it's like using the word "affordable". It's only affordable if you can afford it. And that's not meant to be funny.)

Instead of a power increase a better performance route would be to lower the car's mass. This would have wider ranging benefits than a power increase. Though more power and less weight would be ideal.

Inflation has raised the price. It is now my 6 cents.

[dimik252]

Hence why the motor wouldn't be high-strung.

I think there will be some interesting na numbers coming out.

Ether way a 250hp na would sound awesome!

There bound to release a turbo version - its un-Subaru if they don't lol

[86design]

kinda happy that there not going to turbo charge this car....it wouldn't make any sense...if you were going to turbo charge this car they should of done it in the beginning...i am happy that they will come out with a STI version...

[chulooz]

Originally Posted by 86design

kinda happy that there not going to turbo charge this car....it wouldn't make any sense...if you were going to turbo charge this car they should of done it in the beginning...i am happy that they will come out with a STI version...

I can think of a long list of worthy performance cars that disprove such logic.

And just use sentences, this aint no AIM.

[DSR2409]

Originally Posted by dimik252

Hence why the motor wouldn't be high-strung.

I think there will be some interesting na numbers coming out.

Ether way a 250hp na would sound awesome!

There bound to release a turbo version - its un-Subaru if they don't lol

As "un-Subaru" as RWD?

[Oriental Life]

No turbo in the next version? YES! I'll have current one and in time upgrade to the next one. THANK YOU, Subie!

[Soravia]

Power adding can be done easily with aftermarket stuff like Rotrex supercharger. I don't see a point of paying $35K (WRX STi price) for CF roof and a few other suspension bits that can be bought better with same money from aftermarket. This will just be a halo project with sale numbers like S2000 was, the real deal will be with the base model. There's nothing exciting about these news, really.