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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 05-10-2013, 04:23 PM   #1
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Estimated Max HP for a N/A setup.

Just like the title says, what do you think would be the max hp obtainable for a n/a setup on the FRS/BRZ.
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Old 05-10-2013, 04:35 PM   #2
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Search. There is at least one 200+whp NA car.
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Old 05-10-2013, 04:35 PM   #3
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280-300 bhp or so. Good luck finding someone who can engineer that for you though.
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Old 05-10-2013, 04:39 PM   #4
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On ~92 octane gas probably around 195whp with I/E/H and a good tune. e85 gas probably higher. Keep in mind 195whp is a pretty liberal estimate, most people end up around 180-185, depends on the dyno.
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Old 05-10-2013, 04:40 PM   #5
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depends, do you want to do it with a FA20?
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Old 05-10-2013, 04:46 PM   #6
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Estimated max hp NA....If a 12 year old Honda K20 can hit 280whp NA, then this one can go for 280-300whp (optimistic but edgy).
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Old 05-10-2013, 04:49 PM   #7
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Estimated max hp NA....If a 12 year old Honda K20 can hit 280whp NA, then this one can go for 280-300whp (optimistic but edgy).
I don't see these motors ever touching anything K series. 280-300whp is nothing for them. I know a few guys over 400whp

I just saw a 200+whp dyno from another BRZ today...I'm sure it will be up soon!
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Old 05-10-2013, 05:00 PM   #8
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I'm asking because countless sources says that this car needs at least 40+ more hp. I'm wondering if this amount of hp (or even more) is attainable without having to go SC/TC and if so what type of modifications and how much $$ would it take.

(btw thanks for such prompt responses)
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Old 05-10-2013, 05:06 PM   #9
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Definitely never going to reach k series power but for a max effort setup I can see 300
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Old 05-10-2013, 07:50 PM   #10
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Quote:
Originally Posted by kayoh View Post
I'm asking because countless sources says that this car needs at least 40+ more hp. I'm wondering if this amount of hp (or even more) is attainable without having to go SC/TC and if so what type of modifications and how much $$ would it take.

(btw thanks for such prompt responses)
A couple of things I can think out of my head to increase NA power is find the best exhaust/intake combo. After that, you go internally through the engine upgrading the cams, block, head, increasing displacement, lightweight pistons and lightweight anything. I am no engineer nor an expert in engine so I'm just going to leave it at that as a starting point. But like everyone and including myself have said, this engine is too new to know what hidden gem there could possibly be.

But seeing as how high of a compression(12.5) we already have to start off with, and adding the Direct Injection to the mix and barely on an even ground with the K20 that dont even have any of these goodies. I am(for lack of a better word) scared, but hopefully future engineers can prove us wrong that this engine is a sleeping beast!
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Old 05-10-2013, 08:54 PM   #11
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We def. need cams for this motor.

I need to get a spare set of heads so I can drop them to Delta Cams
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Old 05-11-2013, 12:49 AM   #12
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always wondered... is it possible to swap to a k20? i thought I'd eventually find someone that did, but so far I haven't heard.
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Old 05-11-2013, 02:53 AM   #13
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Anything is possibly with the right hands and amount of money. Practically wise, the motor might be too tall and you gotta find a gearbox that will allow the motor to be mounted longitudinally. If I had to go through all that trouble, I'd figure a way to put the transmission by the rear axle to get the weight distribution closer to 50:50 or even better rear weight bias which is better than 50:50.
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Old 05-11-2013, 10:42 AM   #14
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I would be more concerned about the Torque first, not the HP. Generally, anything over 200 HP and More will bring you up to 130 MPH no problem.

However, the Torque is what will move your car. Think about it this way

Torque = Get moving
HP = Top speed.

Unfortunately, to change your Torque from an NA. You have no other options than swapping head, or cams. If not, then go FI such as Turbo or Supercharger.

These cars will be fast, if you can put down 250 Torque at 1300 rpm, and 200 HP
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