Estimated Max HP for a N/A setup. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

kayoh · 05-10-2013, 04:23 PM

Just like the title says, what do you think would be the max hp obtainable for a n/a setup on the FRS/BRZ.

Wonderbar · 05-10-2013, 04:35 PM

Search. There is at least one 200+whp NA car.

ft_sjo · 05-10-2013, 04:35 PM

280-300 bhp or so. Good luck finding someone who can engineer that for you though.

l0aded · 05-10-2013, 04:39 PM

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.

G-Man · 05-10-2013, 04:40 PM

depends, do you want to do it with a FA20?

LeeMaster · 05-10-2013, 04:46 PM

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).

Jesse@JDLAutodesign · 05-10-2013, 04:49 PM

Quote:

Originally Posted by LeeMaster

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!

kayoh · 05-10-2013, 05:00 PM

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)

Shangsta · 05-10-2013, 05:06 PM

Definitely never going to reach k series power but for a max effort setup I can see 300

LeeMaster · 05-10-2013, 07:50 PM

Quote:

Originally Posted by kayoh

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!

Wonderbar · 05-10-2013, 08:54 PM

We def. need cams for this motor.

I need to get a spare set of heads so I can drop them to Delta Cams

rainmonkey · 05-11-2013, 12:49 AM

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.

Kilika · 05-11-2013, 02:53 AM

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.

Whitigir · 05-11-2013, 10:42 AM

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

05-10-2013, 04:23 PM	#1
kayoh Senior Member Join Date: Aug 2012 Drives: 2014 SWP Limited BRZ Location: Seattle, WA Posts: 290 Thanks: 118 Thanked 113 Times in 69 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	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.

05-10-2013, 04:46 PM	#6
LeeMaster Red wine Join Date: Oct 2012 Drives: Subaru BRZ(R.I.P) Location: Denied Posts: 1,176 Thanks: 1,268 Thanked 342 Times in 240 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	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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05-10-2013, 04:35 PM	#3
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	280-300 bhp or so. Good luck finding someone who can engineer that for you though.

05-10-2013, 05:00 PM	#8
kayoh Senior Member Join Date: Aug 2012 Drives: 2014 SWP Limited BRZ Location: Seattle, WA Posts: 290 Thanks: 118 Thanked 113 Times in 69 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	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)

05-10-2013, 05:06 PM	#9
Shangsta Junior Member Join Date: May 2013 Drives: E30 318IS Location: United States Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Definitely never going to reach k series power but for a max effort setup I can see 300

05-11-2013, 12:49 AM	#12
rainmonkey Senior Member Join Date: Aug 2012 Drives: BRZ - Dark Grey Location: MA Posts: 298 Thanks: 7 Thanked 34 Times in 23 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	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.

05-11-2013, 02:53 AM	#13
Kilika Member Join Date: Feb 2013 Drives: 1992 Toyota MR2 Location: Santa Clara, CA Posts: 19 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	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.

05-11-2013, 10:42 AM	#14
Whitigir Banned Join Date: Aug 2012 Drives: 450 awhp twin turbo vr4 Location: Ohio Posts: 1,012 Thanks: 94 Thanked 273 Times in 177 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	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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