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


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Old 03-10-2019, 08:54 PM   #43
Turdinator
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They have but its $3600.. Even looks similar to Porsche ones.
Link?

EDIT: The Jun one isn’t really Porsche like.
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Old 03-10-2019, 10:11 PM   #44
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Yeah I'm talking about them again. Didn't want to keep mentioning a competitor over and over. Lol There is one other one which is probably better but GRMN only made 100 them for their $50k 86.

At the moment I think our best option is on your car in particular. Haha
oh ok! the GRMN looks great. Mine is good enough so far.
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Old 03-10-2019, 10:16 PM   #45
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Originally Posted by Turdinator View Post
Link?

EDIT: The Jun one isn’t really Porsche like.

Hmm, ok.



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Old 03-11-2019, 08:04 AM   #46
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Lots more will require a motor swap or forced induction.
I guess it depends what you mean. I don't mean that much. It doesn't take much more torque to make a difference when you are driving around town.
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Old 03-14-2019, 05:59 PM   #47
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Hmm, ok.



I have a spare plastic intake manifold...maybe I should cut it and make it a bit like the one above. Hmmm...future project maybe!
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Old 03-14-2019, 09:12 PM   #48
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I have a spare plastic intake manifold...maybe I should cut it and make it a bit like the one above. Hmmm...future project maybe!
I had thought about doing that. I also have a spare plastic manifold that I could cut up and with some PVC pipe and some silicon couplers I reckon I could fab up some prototypes that would safely get through a few dyno pulls. Once volumes and runner sizes were worked out it would be a matter of finding someone to weld up an alloy version.
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Old 04-10-2019, 11:37 AM   #49
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Manifold #7 Results

Well, after 6 failed attempts, why not try again? So here it goes… With manifold number 7, we took a deep dive and looked at all of our previous data. We saw a few elements that made power or had the potential to assist in making power, so we used those elements to design manifold number 7. Most of you probably overlooked the fact that manifold number 6 had pretty good improvements in the 3500 to 4000 RPM range when compared to OEM, and without mention, failed miserably at the higher RPM range. With manifold number 5, we modified our flange design and kept the larger runner diameter where it made the best power, but still less than OEM. We combined these manifolds and made a few tweaks to build manifold number 7. We kept the small plenum design and increased the runner diameter, yet again. These changes led to basically matching OEM power (well slightly higher than OEM), but peaks at 6550 instead of 6800. What it does do is increase horsepower and torque from 3900 to redline. There is a little hiccup from 4600 to 4900, but I have a feeling that actual tuning for the manifold could fix this.

Looking forward to comments and questions, we will be updating again after we add a full exhaust system.



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Old 04-10-2019, 11:42 AM   #50
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I want to see how it performs on e85!!
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Old 04-10-2019, 11:47 AM   #51
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I want to see how it performs on e85!!
That is the plan, first we will do the full exhaust system then finally an E85 tune.
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Old 04-10-2019, 12:22 PM   #52
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I love the commitment you all have at RacerX. The current torque and power curve look very similar to an OEM IM with Crawford BPBs. Which was kind of the point right? Just matching or besting OEM at all is an accomplishment because many thought it wasn't possible. The full exhaust setup will look meaty.

I had the BPBs on my first 93 octane setup, why more people don't run them for the extra area under the curve if they don't have access to E85 is beyond me...

Speaking of E85, hmm the torque surge we get from the longer runner VE doesn't play well with E85 in the past at least. Hopefully this will be different.
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Old 04-10-2019, 03:55 PM   #53
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Good job! If these gains stack on header and tuning I'll buy one.
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Old 04-10-2019, 07:05 PM   #54
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Quote:
Originally Posted by PulsarBeeerz View Post
I love the commitment you all have at RacerX. The current torque and power curve look very similar to an OEM IM with Crawford BPBs. Which was kind of the point right? Just matching or besting OEM at all is an accomplishment because many thought it wasn't possible. The full exhaust setup will look meaty.

I had the BPBs on my first 93 octane setup, why more people don't run them for the extra area under the curve if they don't have access to E85 is beyond me...

Speaking of E85, hmm the torque surge we get from the longer runner VE doesn't play well with E85 in the past at least. Hopefully this will be different.
What I'm wondering is why no one seems to have played with the head flow. We have pretty conclusive evidence that there's some gains to be made with the header, but it's limited. And possibly some gains with the intake manifold, but they'll be very limited. Years ago someone was playing with filling the head ports to increase flow velocity as the heads flowed a ton of air but it wasn't as fast as would be optimal. But they dropped the project or stopped posting.
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Old 04-10-2019, 07:26 PM   #55
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Are these untuned results?
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Old 04-10-2019, 07:51 PM   #56
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Cool results, though it looks like you/they stopped the pull at 7000 rpm. Last I checked redline was 7500 rpm...
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