Who is happy the engine will be Naturally Aspirated?

[Homemade WRX]

Originally Posted by arghx7

I would be surprised if the intake ports would flow above the stock red line. If you port it out there is a potential for driveability issues due to a lack of charge motion and combustion instability. It's hard to say for sure though, so somebody will have to get in there and try.

ah but you are forgetting where AVCS and GDI come into play. So it isn't as bad as a motor without cam phasing and solely port injection (or ever worse, carb).

[arghx7]

GDI engines are more sensitive to intake port shape because they rely heavily on charge motion for mixture formation (unless it is a spray-guided combustion system like BMW uses). When you increase the coefficient of flow you decrease the tumble ratio, reducing combustion stability. That's a fundamental problem in design of a GDI system.

You have PM.

[NastyNate]

Originally Posted by miata

I like naturally aspirated engines because turbo will die when the car is out of warranty. All snails die. I would have been happier with a 1.8L. 200hp engine.

That's not a bad thing. It gives you an excuse to put a better turbo on, which needs better ems, stickier tires, better brakes. Sounds like forced incentive to me.

[Homemade WRX]

Originally Posted by arghx7

GDI engines are more sensitive to intake port shape because they rely heavily on charge motion for mixture formation (unless it is a spray-guided combustion system like BMW uses). When you increase the coefficient of flow you decrease the tumble ratio, reducing combustion stability. That's a fundamental problem in design of a GDI system.

You have PM.

Yes, that is very true but also why were are seeing GDI pistons resembling diesel pistons more and more. I'm glad that most have changed from chasing swirl (early days) and are aiming for tumble as swirl by nature will for fuel towards the cylinder wall/away from the center of chamber, opposite of what you want to do.

As I'm sure you know, the more focused the area for combustion, the better it'll be

Originally Posted by NastyNate

That's not a bad thing. It gives you an excuse to put a better turbo on, which needs better ems, stickier tires, better brakes. Sounds like forced incentive to me.

I think the same way, though I would have ditched the stock turbo before it failed

[Driver]

tl;dr but im glad its NA for same reasons in OP. so ya cheers. although toyota's last 4cyl turbo was... ahhhh just simply great. i'm excited for something new though.

[racerkyo]

I'm fine with it. The car was made NA for gas mileage purpose which is nice for daily driver

[tranzformer]

Originally Posted by racerkyo

I'm fine with it. The car was made NA for gas mileage purpose which is nice for daily driver

If they wen't with a 1.6T, they could theoretically get better mpg than the NA. Just look at the 1.6T that Hyundai designed for the Veloster Turbo.

[NERO]

Originally Posted by Levi

Yes 200 PS is little, so I'll be getting 250 PS with NA mods, surely an engine kit.

I think that's going to be difficult without a turbo. Can it be done, yes, but you will more thn likely have to get every bolt on known to man. I'm going to start with the normal, intake, full exhaust and a tune and see where that lands me. Then I'm going in the motor and throwing a turbo underneath it.

[Levi]

Originally Posted by NERO

I think that's going to be difficult without a turbo. Can it be done, yes, but you will more thn likely have to get every bolt on known to man. I'm going to start with the normal, intake, full exhaust and a tune and see where that lands me. Then I'm going in the motor and throwing a turbo underneath it.

250 PS with increased capacity, forged internals, race exhaust and all this is possible. ITB would be even better.

[Capt Canuck]

Originally Posted by racerkyo

I'm fine with it. The car was made NA for gas mileage purpose which is nice for daily driver

Erm no. It was made NA to provide a responsive, sporty feel. If they wanted 200bhp and mpg it'd be a turbo.

[dabocx]

Some one needs to make ITBs for this car, though the thought of tuning it is somewhat disturbing >_>

[Vracer111]

Very happy the motor is NA...I like higher revving, smaller displacement NA motors.

I've had both a '90 Integra RS and 98' Camaro V6 as 'track' cars (gutted but with untouched stock motors - other than custom intake and exhausts) and definitely loved driving Integra way more even though it was just as fast as the Camaro and not to mention cheaper on consumables (tires and brake pads). The Camaro was very insane in the braking department though; awesome brakes with Hawk HP+ pads and Brembo blanks riding on Nitto NT-555 RII that would just throw you forward and loose speed so fast it was nearly mind boggling.

That's the one thing the Camaro could do better than the Integra...brake! But overall the ~2340lb with full tank, 130hp/121 lbft, 1/4 mile in 15.798sec @ 86.82mph Integra RS just felt way more alive and fun than the ~3200lb, 200hp/225lbft, 1/4 mile in 15.767sec @ 87.27mph Camaro. It also probably has something to do with the ~8lb flywheel in the integra that made it so much fun as well...that was probably the best thing done to it - increasing it's acceleration performance, throttle response, and shifting at the same time.

Weight is the big killer for the Camaro - it just can't change direction quick enough even when loosing a couple hundred pounds over stock and riding on Koni adjustable shocks with massive F/R Hotchkis hollow anti-roll bars and having the rear suspension located with spherical ball end race arms and panhard bar. The car was neutral and pointed in well...it just was so slow at doing so compared to the Integra. The Integra just felt like it could run circles around the Camaro in the handling department, both at Autocross Evolution school/local evolution like practice event and on track even though both could equally steady state corner and pull G's as well as the Corvette Z06s and Elises (though could in no way keep up on track due to stock motor power).

My co-worker let me be the first to drive his turbo'd civic since I gave him an oil-cooler kit I originally purchased for my Tacoma when I had bought a supercharger kit for it. It was fun and really put a smile on my face (the push into the seat from acceleration and the BOV sound never get old either!) but I just don't like the maintenance/reliability aspect of a turbo compared to N/A for track use with a DD based car. I also like the screaming motor and instantaneous throttle/directional response from the slightest pressure change of the right foot that a nicely setup high revving NA motor car gives.

Hopefully the FR-S comes close to what I felt with my Integra: the FR-S will rev higher and have noticeably more power, but it also is over 400lbs heavier, and weight is ALWAYS an enemy I'm looking to defeat...

Speaking of high output motors, how does a normally aspirated 3.0 Liter V8 that revs to 10,500 rpms and makes ~470hp/~295lbft grab ya? It's the Hartley H1V8 motor used in the Ariel Atom 500...

Too bad that just the motor costs more than the most expensive BRZ model and it is not really designed for longevity in a DD production car... still a sweet motor (but not 1.5L BRM V16 sweet that makes any V8 cower in fear by it's growl while simultaneously wailing like the F1 motor it is past 12000 rpm!)

[7thgear]

i have spent 3 years taking a 115hp car to autocross and time attacks

ive spent 3 years after that taking a 166hp car to autocross and time attacks

i'll be very happy with a 200hp car

[Pakjk89]

Coming from a GTI that gets 200 hp with a turbo, I am excited to get 200 hp without the added turbo lag, although I'll miss the torque.