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


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Old 01-19-2017, 04:10 PM   #43
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Haven't seen a dyno, but I'd be willing to bet that there's an awesome midrange, but the top end is seriously lacking, which explains the small gain in peak numbers.

Look at the exhaust ports on this engine. Just look at them. There's never going to be great NA top end power. There just isn't.

...That and they never mentioned cams... And the stock duration isn't going to give you power at 7500 NA. Again, it's just not going to happen.
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Old 01-24-2017, 04:21 AM   #44
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Originally Posted by Traktor View Post
Because it costs $17k and an ACE Header + a tune on a stock engine will get you around 240 at the crank on 91 fuel. Other headers will generally get maybe 10-15 less chp than the ACE.
As stated above, that engine appeared to be running a catless header and has a custom tune, so you would expect bigger gains even taking into account the losses from increased capacity. You wouldn't quite get the 120hp/litre in the ACE example, but still...
And then there was all the porting/polishing work that seems to have been for naught?
Dude if you paid attention it should be 240whp and if you look at the torque. Do the math. Then you basically have 190lbs from 5800-6800rpms that's that show this kit not only raised top end but added nearly 30ftlbs under the curve. Hp doesn't win races! Lol torque does. Sure for like 6000 you can have forced induction. And more weapons get and more this and that but the whole reason is pure motor powrr. Also by the looks at the components this is all upgraded material. Witch leaves this question. What if the was forced induced. Or can u force induce it. ????? Maybe
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Old 01-24-2017, 04:25 AM   #45
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Originally Posted by -Willis-86touge View Post
Hp doesn't win races! Lol torque does
I dispute this. You treat them like they are independent items. You don't have one without the other. (Yeah, I know you can have torque without power but you get the gist.)
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Old 01-24-2017, 04:29 AM   #46
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I dispute this. You treat them like they are independent items.
Sorry to upset you I'm not being racists!!! Lol get the pun. But the fa20 definitely lacks toque. This is what it needs, at least that's my opinion. For na Applications at least. Fi just keep loadinding boost and hope it doesn't blow,right. Oh and like you said you can't have hp with out tq I was just stating that. If you notice the post about this it shows max tq at 5800 and max ho at 6800. If you do the math like I stated the plot would show 190 lbs at 5800 and 185 ft lbs at 6800. Who know how high the tq is below 5800 rpms. I bet it's pretty flat

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Old 01-24-2017, 04:48 AM   #47
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So 5800rpms =26kg*m=190ftlbs
So 6800rpms = 243ps= 239hp= So 185ftlbs*6800/5252=239hp
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Last edited by -Willis-86touge; 01-24-2017 at 10:28 AM.
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Old 01-24-2017, 08:11 AM   #48
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I dispute this. You treat them like they are independent items. You don't have one without the other. (Yeah, I know you can have torque without power but you get the gist.)
You can have a lot of one without a lot of the other, and vice versa.
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Old 01-24-2017, 08:17 AM   #49
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So 5800rpms =26nm=190ftlbs
So 6800rpms = 243ps= 239hp= So 185ftlbs*6800/5252=239hp
That's not 26Nm.
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Old 01-24-2017, 10:20 AM   #50
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That's not 26Nm.
My bad was tired and miss wrote that been fixed now
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Old 01-24-2017, 10:29 AM   #51
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Only $17,218.09
That's with stock Cams
I can tell you my 2.3 Liter setup with Sleeves, head porting, valve train AND CAMS is about 30% cheaper.
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Old 01-24-2017, 10:35 AM   #52
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2l @ 200hp bored and stroked to 2.4l @ 240hp... Why are people disappointed? There are losses they would have to overcome. Increasing the stroke would make for a pretty crappy rod ratio and increasing the bore will negatively effect the quench built in to the combustion chamber....
This is why I stayed with 90mm stroke and adjusted the wrist pin to acquire stock rod to stroke ratio
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Old 01-24-2017, 10:51 AM   #53
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Only $17,218.09
That's with stock Cams
I can tell you my 2.3 Liter setup with Sleeves, head porting, valve train AND CAMS is about 30% cheaper.
It does have cams, and there are a lot of people who can't build and engine by themselves. But I'm glad you posted because remember you did the r n d yourself and a lot of the work prob yourself. 30% sound about right on mark up for the service.
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Old 01-24-2017, 11:07 AM   #54
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Originally Posted by -Willis-86touge View Post
It does have cams, and there are a lot of people who can't build and engine by themselves. But I'm glad you posted because remember you did the r n d yourself and a lot of the work prob yourself. 30% sound about right on mark up for the service.
I am including Labor and Assembly, I am also working on an affordable version of my kit. You too could have a 2.3 liter engine assembled for under $10k
There are some wasted services in there such as WPC. That coating wears off after time. One reason I did not opt for it. Now if you had a dedicated race car and lots of money to rebuild every 10k miles to apply WPC again and again go for it.
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Old 01-24-2017, 11:12 AM   #55
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Glad to hear this makes my ears flutter!!!
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Old 01-24-2017, 01:45 PM   #56
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Dude if you paid attention it should be 240whp and if you look at the torque. Do the math. Then you basically have 190lbs from 5800-6800rpms that's that show this kit not only raised top end but added nearly 30ftlbs under the curve. Hp doesn't win races! Lol torque does. Sure for like 6000 you can have forced induction. And more weapons get and more this and that but the whole reason is pure motor powrr. Also by the looks at the components this is all upgraded material. Witch leaves this question. What if the was forced induced. Or can u force induce it. ????? Maybe


I was paying attention. The whp determination is an unconfirmed assumption you have made based on a picture of an unrelated dyno run testing a different product. All their other media has "243ps up from 200ps STOCK". Stock normally doesn't mean stock except for an intake, it means stock. And the official stock chp figure for pre-17 twins is.... 200ps.
For the record, I hope you are actually right.


No argument that more mid range torque gets you out of the corners, but even then you actually get roughly similar 20-30 ft/lbs from about 5000rpm to redline with the ACE header and tune. Perhaps the 2.4 has more torque lower than that, but only if the header design eliminates the torque dip like the ACE header does. Given the header in the video appears to be a conventional EL design, you would think not.



Further to that, I don't see any reference to included headers with the engine. Perhaps these guys have conservatively quoted the power figure with a stock-like tune that would assume customers will simply bolt the factory exhaust on?


Maybe ACE should hook up with these guys and see what is possible?

And I cannot wait to see how celek's build goes. Surely its time for an update hey bud?

Last edited by Traktor; 01-24-2017 at 02:05 PM. Reason: Added detail
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