Compression ratio 12.5:1. Bye-bye Super charger & Turbo build?

[madfast]

Originally Posted by arghx7

ding ding ding

direct injection is a lot more sensitive to the shape of the piston crown because mixture formation is very different than on a port injected engine.

only for stratified charge, no? for regular DI on the intake stroke, wouldnt the shape of the ports would be more important than the piston?

[serialk11r]

That's true, but I don't think the information on D4-S is consistent enough to say what actually happens. I've read all the "official" articles on it several times and I am still confused as to how the direct/port injectors are operated.

[Allch Chcar]

Originally Posted by arghx7

ding ding ding

direct injection is a lot more sensitive to the shape of the piston crown because mixture formation is very different than on a port injected engine.

I got nothing. What you said it true.

[arghx7]

"Developed spray" is that pattern used in the 2GR-FSE of the IS350, which utilizes the D-4S (GDI + PFI) system like on the new FA engine.

[dcaff]

Lol. I just hope that TRD will make a Turbo or Supercharger kit for this car. 12.5 is sky high. But TRD makes the Supercharger for the 1GR-FE in my truck and compression is a decent 10.1. Its a 60hp gain (crank) from stock. 239 to 304hp.
Imagine how much money Toyota would make if they offered a S/C kit that brings power from 200 to 260 or 280hp! Did i mention when installed at a dealer the S/C , motor and everything else are covered under warranty!

[serialk11r]

Imagine how the world would be if everyone read the news and knew, for example, how Toyota said there would be no forced induction for this car, ever. What a thought.

lol sorry didn't meant to be a ****, but too many people make annoying posts like that.

[Levi]

There should not be any problem for supercharging this engine. The BMW M3 E9X runs over 600 PS with supercharger (G-Power, ESS-Tuning, Active Autowerke,...) and has a compression ratio 12.0:1.

[Ryephile]

Originally Posted by Levi

There should not be any problem for supercharging this engine. The BMW M3 E9X runs over 600 PS with supercharger (G-Power, ESS-Tuning, Active Autowerke,...) and has a compression ratio 12.0:1.

That's not a terribly relevant "if...then" comparison. We have no idea how fragile or strong the FA20 is. We can run some calculator numbers and make educated guesses what the typical safe boost level limit is, however that makes no regard for actual individual component strength, which is very much decided on a per-engine design basis. Saying "just cuz BMW can do it" has no bearing on if this particular engine can. Only time and experimentation [or very advanced simulation] will tell.

[Allch Chcar]

Originally Posted by Driftster

I giggle at these threads, no more than 5 maybe 6 months ago I was in here saying this cars boost potential will be all but non existent, the direct injection and it's application will be the limiting factor, because with direct injection comes higher compression for fuel economy........ And what were the responses I got?

"you don't know what you're talking about"
"Toyota would never produce a car that was this focused on the tuner market that couldn't be boosted"
"You're an idiot"
"get out of here troll"
"Direct injection has nothing to do with how the engine works"

...Hah....Good job...

It still remains to be seen.

Originally Posted by serialk11r

Imagine how the world would be if everyone read the news and knew, for example, how Toyota said there would be no forced induction for this car, ever. What a thought.

lol sorry didn't meant to be a ****, but too many people make annoying posts like that.

Because the common belief is that you can never have enough power?

Originally Posted by Ryephile

That's not a terribly relevant "if...then" comparison. We have no idea how fragile or strong the FA20 is. We can run some calculator numbers and make educated guesses what the typical safe boost level limit is, however that makes no regard for actual individual component strength, which is very much decided on a per-engine design basis. Saying "just cuz BMW can do it" has no bearing on if this particular engine can. Only time and experimentation [or very advanced simulation] will tell.

It's usually not just the structural strength nearly as much as the propensity for detonation. From my understanding that is, detonation is far more dangerous and damaging than incrementally higher cylinder pressures. Eg. If you take a high compression engine and run race grade fuel you can usually run more boost safer unless there is a significant weak point.

I'm not trying to come across like I know what I am talking about so please excuse my inexperience.

[serialk11r]

Nah the point is there are too many people talking about factory supercharging options when it's been said over and over that it wouldn't happen.

[Ryephile]

Originally Posted by Allch Chcar

It's usually not just the structural strength nearly as much as the propensity for detonation. From my understanding that is, detonation is far more dangerous and damaging than incrementally higher cylinder pressures. Eg. If you take a high compression engine and run race grade fuel you can usually run more boost safer unless there is a significant weak point.

I'm not trying to come across like I know what I am talking about so please excuse my inexperience.

Yes, of course. I was oversimplifying. Total quench (mechanical + chemical) fuel type, component strength, knock sensor, and ECU strategy all play their part in detonation prevention and resistance.

[madfast]

Originally Posted by serialk11r

Nah the point is there are too many people talking about factory supercharging options when it's been said over and over that it wouldn't happen.

they said no turbo. nothing about superchargers. personally i doubt it would happen, but you never know...

[Allch Chcar]

Originally Posted by Ryephile

Yes, of course. I was oversimplifying. Total quench (mechanical + chemical) fuel type, component strength, knock sensor, and ECU strategy all play their part in detonation prevention and resistance.

I was just elaborating.

I never tire of posting my turborat w/ wings.

[jdhariwal]

During the opening speech at Fuji Speedway, they said that the engineers had traveled all over the country attending grassroot drift and track events, to see what the enthusiasts and purists wanted. I'm sure that a turbo kit will be available within months of its release. People are already taking about building a drift car out of it, so theirs no way Toyota and Subaru would limit us to a motor like this, seeing as pro drift cars are 400+hp.