How much power? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

rosol16 · 11-23-2015, 10:04 AM

How much power can you safely make on the FA20? Sorry if there is already a topic on this a quick search brought up nothing

NotSoJDM · 11-23-2015, 10:06 AM

Anytime you increase power you are decreasing the safety margin of your engine. 320whp and below is all I would be willing to push my stock motor at with a good tune.

rosol16 · 11-23-2015, 10:08 AM

I'm actually looking at the Jackson supercharger kit but with slightly less power maybe 250whp? Granted I know when you increase power you lose reliability but that's just the name of the game.

NotSoJDM · 11-23-2015, 10:21 AM

With a good tune, the JRSC setup will be plenty reliable on stock engine.

rosol16 · 11-23-2015, 10:42 AM

I know this will definitely void my warranty and really don't want to be building another engine so Ill just make sure to get a good tune.

Anthony · 11-23-2015, 11:16 AM

Go with HRI Tuning.
@Sportsguy83

toeout · 11-23-2015, 01:53 PM

I'm more curious about the drivetrain. OE clutch will give up and that's not a problem. What about transmission and diff? How long will they sustain 300 whp from a supercharger?

BlueDubbinTDI · 11-23-2015, 01:55 PM

Pretty sure it's hard to overdue it on the stock fuel system so I wouldn't worry too much if you have a good tuner.

weederr33 · 11-23-2015, 01:59 PM

Just don't cut corners!

raven1231 · 11-23-2015, 02:03 PM

200hp

LOLS2K · 11-23-2015, 02:05 PM

Quote:

Originally Posted by raven1231

200hp

To the crank

xxscaxx · 11-23-2015, 02:08 PM

There is no answer. Some have popped on stock power. There are others holding 500whp. Seems like its just luck of the draw.

I was on an innovate SC making 280-290 (estimate) for about a year. I upgraded to a JDL Turbo kit with a gtx2867r and now make 442whp/346wtq, all on the stock motor. I even accidentally overboosted on my first tune before i switched and got a dyno tune a few times and so far my motor has been holding strong, no knock, etc. It could blow tomorrow for all I know. Then again, a stock motor could blow tomorrow too.

The only thing you should be concerned with is the risk vs. reward and if you are willing to accept the fact the motor may break, and if you are willing to spend the money to fix it or rather run it stock and have it covered by the dealer (which could vary as well).

Transmission doesn't like 350whp+.

G-awesome · 11-23-2015, 03:17 PM

rosol16 · 11-23-2015, 03:22 PM

Well gotta pay to play a clutch is no big deal I'd run with the stock one until it goes then go with a stronger one. The rear end I just hope that it doesn't go. The motor I can rebuild I've built a few already including the one in my SRT4. I've actually built it twice but the second time it broke was from an original part not one I replaced.

11-23-2015, 10:04 AM	#1
rosol16 Not A Member Join Date: Nov 2015 Drives: 2014 Mustang GT Location: Dyess AFB Posts: 176 Thanks: 72 Thanked 41 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	How much power? How much power can you safely make on the FA20? Sorry if there is already a topic on this a quick search brought up nothing

11-23-2015, 11:16 AM	#6
Anthony Weight Nazi Join Date: Aug 2012 Drives: 13 FRS -399lb, 11 335is, 05 Tiburon Location: Biloxi, MS / Gulf Coast 86 Posts: 3,702 Thanks: 5,009 Thanked 3,712 Times in 1,765 Posts Mentioned: 150 Post(s) Tagged: 4 Thread(s)	Go with HRI Tuning. @Sportsguy83 __________________ Build Thread \| The Venus Project \| Any car which holds together for a whole race is too heavy.

11-23-2015, 01:59 PM	#9
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,327 Thanks: 4,529 Thanked 5,587 Times in 2,929 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	Just don't cut corners! __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

11-23-2015, 02:03 PM	#10
raven1231 Senior Member Join Date: Aug 2013 Drives: 2013 Firestorm FR-S, 2016 DGM WRX Location: Cincinnati, Ohio Posts: 4,580 Thanks: 8,264 Thanked 3,118 Times in 1,667 Posts Mentioned: 24 Post(s) Tagged: 1 Thread(s)	200hp __________________ http://www.ft86club.com/forums/showthread.php?t=59870

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11-23-2015, 10:08 AM	#3
rosol16 Not A Member Join Date: Nov 2015 Drives: 2014 Mustang GT Location: Dyess AFB Posts: 176 Thanks: 72 Thanked 41 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	I'm actually looking at the Jackson supercharger kit but with slightly less power maybe 250whp? Granted I know when you increase power you lose reliability but that's just the name of the game.

11-23-2015, 10:42 AM	#5
rosol16 Not A Member Join Date: Nov 2015 Drives: 2014 Mustang GT Location: Dyess AFB Posts: 176 Thanks: 72 Thanked 41 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	I know this will definitely void my warranty and really don't want to be building another engine so Ill just make sure to get a good tune.

11-23-2015, 01:53 PM	#7
toeout Senior Member Join Date: Oct 2013 Drives: 2013 FR-S Location: Knoxville, TN Posts: 289 Thanks: 106 Thanked 172 Times in 71 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I'm more curious about the drivetrain. OE clutch will give up and that's not a problem. What about transmission and diff? How long will they sustain 300 whp from a supercharger?

11-23-2015, 01:55 PM	#8
BlueDubbinTDI Senior Member Join Date: Mar 2013 Drives: 2013 FR-S, 2012 MCS Location: Jax, FL Posts: 1,975 Thanks: 943 Thanked 570 Times in 356 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Pretty sure it's hard to overdue it on the stock fuel system so I wouldn't worry too much if you have a good tuner.

11-23-2015, 02:08 PM	#12
xxscaxx Senior Member Join Date: Jul 2012 Drives: 2013 SWP BRZ Location: New York Posts: 2,240 Thanks: 458 Thanked 878 Times in 556 Posts Mentioned: 34 Post(s) Tagged: 0 Thread(s)	There is no answer. Some have popped on stock power. There are others holding 500whp. Seems like its just luck of the draw. I was on an innovate SC making 280-290 (estimate) for about a year. I upgraded to a JDL Turbo kit with a gtx2867r and now make 442whp/346wtq, all on the stock motor. I even accidentally overboosted on my first tune before i switched and got a dyno tune a few times and so far my motor has been holding strong, no knock, etc. It could blow tomorrow for all I know. Then again, a stock motor could blow tomorrow too. The only thing you should be concerned with is the risk vs. reward and if you are willing to accept the fact the motor may break, and if you are willing to spend the money to fix it or rather run it stock and have it covered by the dealer (which could vary as well). Transmission doesn't like 350whp+.

11-23-2015, 03:17 PM	#13
G-awesome Senior Member Join Date: Jan 2014 Drives: 2015 Firestorm Scion FRS Location: Vancouver Posts: 534 Thanks: 371 Thanked 230 Times in 161 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)

11-23-2015, 03:22 PM	#14
rosol16 Not A Member Join Date: Nov 2015 Drives: 2014 Mustang GT Location: Dyess AFB Posts: 176 Thanks: 72 Thanked 41 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	Well gotta pay to play a clutch is no big deal I'd run with the stock one until it goes then go with a stronger one. The rear end I just hope that it doesn't go. The motor I can rebuild I've built a few already including the one in my SRT4. I've actually built it twice but the second time it broke was from an original part not one I replaced.

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