Fr-s with subaru turbo?

[SkullWorks]

toast...Loaf I get it...


I'm waiting on some solid feedback that the internals are forged then I'll be developing a gt28 turbo kit for the cars, My preference is for higher rail pressure and larger DI injectors, I have experience with these parts already so that's not the part I'm worried about ATM...

there is about 30-40% overhead left in most DI injectors for the power output from the factory.

[coyote]

Originally Posted by SkullWorks

I'm waiting on some solid feedback that the internals are forged

I knew there was a reason I was persisting with this forum.

When you know, please share.

[serialk11r]

Originally Posted by SkullWorks

toast...Loaf I get it...


I'm waiting on some solid feedback that the internals are forged then I'll be developing a gt28 turbo kit for the cars, My preference is for higher rail pressure and larger DI injectors, I have experience with these parts already so that's not the part I'm worried about ATM...

there is about 30-40% overhead left in most DI injectors for the power output from the factory.

Might still be a good idea to swap since the time at which injection occurs appears to matter, increasing the pulse duration might affect combustion.

[SkullWorks]

yeah the increase is in increasing fuel rail pressure as most operate at 70-90 bar but the components are all rated at 150-200 bar,

once you max that out you start looking at bigger DI Injector flow rates,,,but by the time you need em I'll have it sorted out, no worries...

[Dimman]

Originally Posted by serialk11r

Might still be a good idea to swap since the time at which injection occurs appears to matter, increasing the pulse duration might affect combustion.

Question is, swap with what? The D4-S looks like it has a very specific fan spray pattern, and there are only the two motors that use it. Both are making ~ the same hp/cyl too.

[serialk11r]

Originally Posted by Dimman

Question is, swap with what? The D4-S looks like it has a very specific fan spray pattern, and there are only the two motors that use it. Both are making ~ the same hp/cyl too.

Right, that's the question that needs to be answered. Homemade WRX seems to be working on it

[wcbjr]

Originally Posted by Dimman

Because it operates on DI only at full loaf.

Only DI, and no port, at full load? Or DI only (and possibly port) at full load and no other time?

[70NYD]

pretty sure its DI only at full load, a mixture in mid and port at low.
but why assume this engine wont take boost from stock? even ~10psi i mean the 2zz in the exige is 11.5:1 and the exige s is also 11.5:1, no?
when i had a chance to talk to Tada-san, he said that everything that toyota(trd) makes (and i assume subaru as well) later will be directly bolted on to even the 1st car produced. so going by what he said then, if they EVER plan on producing a s/c or t/c kit, i would assume it will be a direct bolt on.

[wcbjr]

Only thing I can add to this whole thread is that Subaru is not known to use high-strength materials or designs in their NA engines. Just enough to get the job done in stock form.

[Dimman]

Originally Posted by justaquestion

Why is everyone talking about a factory turbo for the BRZ, when the CEO of Subaru has said it himself countless times in interviews that there will never be a production BRZ turbo.

That has never been said.

All official statements have been vague enough to leave future FI possibilities open.

[serialk11r]

Originally Posted by 70NYD

pretty sure its DI only at full load, a mixture in mid and port at low.
but why assume this engine wont take boost from stock? even ~10psi i mean the 2zz in the exige is 11.5:1 and the exige s is also 11.5:1, no?
when i had a chance to talk to Tada-san, he said that everything that toyota(trd) makes (and i assume subaru as well) later will be directly bolted on to even the 1st car produced. so going by what he said then, if they EVER plan on producing a s/c or t/c kit, i would assume it will be a direct bolt on.

The 2ZZ supercharged engine has a modest 15% increase in power, it's not running 10psi for sure. I'd be a bit surprised if it were even 6psi.

[Dimman]

Originally Posted by justaquestion

Just a quick google search, but explain to me how this is so vague that you still think there will be a turbo?

1) Want is not the same as will.

2) He is a marketing director. Those guys also told us no WRX STI was coming to America.

3) The WRX with specifically the STI mentionef is clearly not the only turbo platform from Subaru. Impreza, Legacy and Forester have all been turboed.

[70NYD]

Originally Posted by serialk11r

The 2ZZ supercharged engine has a modest 15% increase in power, it's not running 10psi for sure. I'd be a bit surprised if it were even 6psi.

Yeah but look at exige (190hp) and exige 265E(264hp) while having same compression ratio. Again, all I'm saying is its not impossible. I domt understand why people say something like a fact without seeing the engine first hand and seeing if internals are forged, how the deck looks like, what the materials for block are, webbings etc

Originally Posted by justaquestion

Just a quick google search, but explain to me how this is so vague that you still think there will be a turbo?

Marketing does what company says to make company look good at that point in time

[serialk11r]

Originally Posted by 70NYD

Yeah but look at exige (190hp) and exige 265E(264hp) while having same compression ratio. Again, all I'm saying is its not impossible. I domt understand why people say something like a fact without seeing the engine first hand and seeing if internals are forged, how the deck looks like, what the materials for block are, webbings etc

Emphasis on the E. Okay I guess the Exige S 240 is an example that runs on pump gas and has more power, but it's barely over 25% improvement. Like I said, that would be the most you can hope for.

On a side note, with a supercharger I hope there's a way to remap the accelerator pedal so that the bypass is open but the engine is putting out maximum NA torque earlier, and then pushing the pedal past that gives you boost. That would give better efficiency and truly linear response.