BRZ STI NA with more power

[Snoopyalien24]

Well, this is from a Subie tech from another forum, talking about the FB

"hey to whom ever was wondering about the fa engine that doesnt already know. not that im special lol but im a subaru technician and in my fb engine training module we discussed direct injection and the fb was already bossed for it, as far as the heads and intake go. so subaru has long since planning this. i had slipped away with toyota for awhile back in 08 and got a very little insight then. but from what i can see the difference in the fa and fb is the fuel managment and compression...and likely cam profiles. however i can tell you my instructor told us that the fb wouldnt really be good for a high boost application...likely nothing stronger rods and pistons would not cure. when we opened this little baby in class i found it to be one of the closest tolerance engines ive ever seen! 15% coolant flow to the block and 85% to the heads with high volume not high pressure oil pump. kinda reminds me of porsche. hot running rotating assembly with nice cool heads. lots of o-rings instead of gaskets. all in all....makes an ej look like an ea82."

For those who don't understand much about engines (like me lol) another member discussed a little more about what this meant

"Basically most of the coolant goes through the head to keep it cool, but NOT through the block. This means the block is meant to stay hot, which helps piston rings seal because the tolerance gets tighter as the heat expands the block (making the circles the pistons fit in, tighter). O-rings vs gaskets really isn't a gain in sealing, but o rings are easier to replace because gaskets have to be properly set when you are putting things together. O-rings usually sit much more easily in place."

[old greg]

Originally Posted by Dave-ROR

This car should not follow the normal subaru formula... I want a NA, slight bump in power, big bump in suspension/handling and a nice chunk less weight.

That is the normal Subaru formula, just not for an STI. What you want is a BRZ Spec C Type RA

[JDLM]

Originally Posted by old greg

That is the normal Subaru formula, just not for an STI. What you want is a BRZ Spec C Type RA

Would be amazing

[Zaku]

Id wait to buy a spec c for sure

[Snoopyalien24]

Originally Posted by Zaku

Didn't they confirm next wrx has a coupe so rwd coupe versus awd coupe.

This reminds me of one of the first chops I ever did using real pictures.
Searched up the ol' hard-drive and found this:

[ZDan]

Originally Posted by iggyhop9

IMO, I think the FA engine is detuned by about 20-40 HP. No way a car with this much technology and enhancements only gets 100 hp per liter. Toyota and Honda lift engines from more than a decade pulled off similar feats in the sports coupe segment.

Those engines revved to 9000 rpm or close to it.
Power = torque * rpm
There hasn't been any new tech over the past 10 years to give radically greater torque per liter, 75 lb-ft/liter is still about it.
So, 2.0 liters limited to 7400rpm, power peak at ~7000?
150 lb-ft * 7000rpm/5252 = 200hp, about all you can expect. Sounds like it's pretty well "tuned" close to the max from the factory.

[Navi]

No its not, factory tunes always calculate in fuel economy, durability and emissions.

They also compensate for bad quality fuel.

There will be room for more performance, don't worry.

[tranzformer]

Originally Posted by ZDan

Those engines revved to 9000 rpm or close to it.
Power = torque * rpm
There hasn't been any new tech over the past 10 years to give radically greater torque per liter, 75 lb-ft/liter is still about it.
So, 2.0 liters limited to 7400rpm, power peak at ~7000?
150 lb-ft * 7000rpm/5252 = 200hp, about all you can expect. Sounds like it's pretty well "tuned" close to the max from the factory.

The Porsche 911 GT3 RS 4.0 gets 85 lb-ft/liter but that relies on Porsche tech from the RSR. It is possible to get more than 75 but it costs $$$.

[Giccin]

Originally Posted by old greg

That is the normal Subaru formula, just not for an STI. What you want is a BRZ Spec C Type RA

I like the sound of that.



And to the OP.

I hope you're not tryin' to troll. Especially since you planned on siting your "source" 2-3 days from now (Saturday).

[Levi]

LOL. The Ferrari 458 Italia makes 540 Nm @ 6.000 RPM from a 4,5l V8 that revs till 9.000 RPM. This is 120 Nm/l.


Very good news if this is really so. I do not want any turbo. I do not see any problem with STI badge. STI does not mean Turbo. M (BMW) neither means naturally aspirated, yet all the cars were so. And now M also is turbo. I just thought about still getting a GT86, but if there come a BRZ STI with NA engine ,then that is the one I'd like. Please give more infos when if you can.

[tripjammer]

Originally Posted by Zaku

Didn't they confirm next wrx has a coupe so rwd coupe versus awd coupe. But I haven't got any info from Japan at all from Subaru, and there was credit to my info in the past. When I helped with tms news.So take it with a grain of salt. But I will check.

OMG a AWD WRX coupe? Where you hear about this? All I know is that the next WRX will have a 2.0 liter turbo motor at around 270 HP and the STI version over 300 HP.

This new WRX will be out in 2013.

I think what would be very cool would be a BRZ and the new 2013 or 2014 WRX sedan both in the garage...LOL! That would be tight.

Hopefully the next version of the WRX will come with a 6 speed manual tranny standard.

[tripjammer]

Originally Posted by Navi

No its not, factory tunes always calculate in fuel economy, durability and emissions.

They also compensate for bad quality fuel.

There will be room for more performance, don't worry.

Your right and this motor is suppose to give us 30 MPG too...the S2000 engine never got this kind of MPG...

[ahausheer]

The scion already gained an additional 3 SAE Hp from a better flowing exhaust so there is at least a few Hp to be had. Either way we can always make it sound better and look cooler. I think the power to weight is just fine.

[ahausheer]

Source?