FOR THE LOVE OF GOD. Please prove this moron wrong.

ok this kid my friend knows says his WRX is twin turbo. please jus say no its not so i can show him how dumb he really is. thanx

Here, let him count it himself:

http://www.myevo.com/WRX_motor_getr.jpg

One.

:)

You can get them Twin Turbocharged:) , but i have only seen one.

But no, they just have a single turbo:) .

No not on the WRX as stock/standard. But I think its possible to to do that.

Sequential Turbos, one for boost at lower RPMs and one for higher RPMs.

Correct if wrong.

That's what i meant Tsui, one of the guys in the club has a twin Turbocharged rex, produces something like 550-600 hp.

Oh, Sorry. Guess I mis read.

Nah, i just worded it wrong.:)

Yep just one. I know some people whi thought that the Eclipse GSX and Eagle Talon TSi were twin turbo as well. Nope just one? I wonder where people get this. Besides I wouldn't put two turbos on a smaller engine. Stick with one big one.

As everyone has stated, the WRX comes with ONE turbo, not twin turbos. You can mod it to have two, but stick with one big turbo.

the legacy B4 has twin turbos, but the wrx only has one. One big one would be the best, especially considering that really isn't much to any at all with a aftermarket big turbo and the proper setup.

I thought that 2 smaller turbos did a better job than one big turbo. isn't that why porsche goes with 2 instead of one big one?

It depends what part of the power band you want to be emphasised. Two smallish turbos give it amazing mid-range balls and start spooling really low (read like 1500rpm) while big turbos running lots of boost give you a grunty top end and nothing down low.

i think some people just refer to anything thats turbocharged as a "twin-turbo" :rolleyes:

How about 2 turbos one big and one small, so then you can get the boost at lower rpms and then one at higher rpms.

Isn't it call sequiental turbochargers?

if this guy actually OWNS a WRX, and thinks it's a TT, he doesn't deserve that beautifully crafted Subaru.

From what I understand a Twin turbo is in development but I dont think anyone in the states has one

Originally posted by Lord_Vektra
From what I understand a Twin turbo is in development but I dont think anyone in the states has one

The TT has been developed for the EJ25, and is being tested on an Impreza 2.5 RS. For updates on this kit, go to http://www.i-club.com/forums/showthread.php?threadid=151721

theres a twin turbo legacy in japan, but not here

and theres a gemini twin turbo kit for the 2.5, and the kit ej25sti mentioned.

well im think the prototype Legacy has a TT.

The Legacy B4 Blitzen:
http://www.subaru.net/fuj03.jpg

says that it TT is made for realiabilty rather than speed and power.

The B4 (we have it here in Australia) is definately twin turbo. THe WRX howver, is not.

So is the B4 being sold in AUS now? if so, how much the the B4 retail in AUS?


-Tsui

Thats pretty sad when you dont even know how many turbos your car has.

Originally posted by ozriceboy
The B4 (we have it here in Australia) is definately twin turbo. THe WRX howver, is not.

Yeah but your B4's are bullshit! The JDM and NZ-spec B4's make 206 Kw as opposed to the 190 Kw that the Aussie version, come to think of it for some odd reason, the Auto version is only 190Kw........The Blitzen is production, not prototype, but only VERY limited numbers were produced.....

And as for Twin turbo WRX :silly2: :silly2: :silly2: :silly2: :silly2: only the STi is TT, the normal one is a single Turbo

Originally posted by Moss1O6GTi


And as for Twin turbo WRX :silly2: :silly2: :silly2: :silly2: :silly2: only the STi is TT, the normal one is a single Turbo

Sense when? Last time I checked the closest an STi got to two turbos was the B4 it sat next to on the lot :D :D

Any who, I wonder how much the fab job on that TT WRX cost?

As far as TT vs. Big Single, it all depends on application. IMO TT makes a better track car were a large single works better in drag strip racing. Apparently others agree because the guys who race GTRs on a road course just upgrade TTs, but the drag guys slap a huge fuckoff single on it.

the guy is definatly wrong

ask the person to point out this second turbo, and tell us all which part of the engine he points to.

is there even a 4 cylinder car with a twin turbo set up? i allways thougth the porpus up haveing 2 turbos was to handle the larger airflow from having a larger diplacment engine, eg 6cylinder. it would be a alternetive to having a single large one haveing to wait through a lot of lag. having t turbos decreases spool time and can handle the same amout of air as a single huge one. if i were you i would'n even argue with the kid. just turn your cheek and laugh to yourself. haha if this post where on i-club it would have gotten eaten up.

Originally posted by Skypatcorbin
is there even a 4 cylinder car with a twin turbo set up? i allways thougth the porpus up haveing 2 turbos was to handle the larger airflow from having a larger diplacment engine, eg 6cylinder. it would be a alternetive to having a single large one haveing to wait through a lot of lag. having t turbos decreases spool time and can handle the same amout of air as a single huge one. if i were you i would'n even argue with the kid. just turn your cheek and laugh to yourself. haha if this post where on i-club it would have gotten eaten up.

There are some guys running twin turbos on 3s-GTEs. Basically you run TT if you want to have the quick spoolup of a small turbo but be able to run lotsa boost. If you don't have to worry about spool for one reason or another (NO2, Turbo mated with Supercharger... whatever) you go with a big single. A large single is used alot by drag racers, TT for track guys. As I said in my previous post, it all depends on what you wanna do with it. Also, as far as airflow from a larger displacement engine, you can spool bigger turbos easier with a larger displacement engine because of the larger EG flow so higher displacement engines can use larger turbos easier then smaller, hence the reason you see tiny TTs on small displacement engines (VR4, GTR ect) and... well... I can't think of any big displacement single turb cars right now :D :D

Originally posted by Gonthrax

... I can't think of any big displacement single turb cars right now :D :D

Bently Turbo R. GTs-t Skylines. Early R30 GTR Skyline. Most Turbo Deisels. Early Turbo Supra.

Anyway, Both the GT Legacy and the RX7 used Twin Turbos from the mid 90s on. Both are fairly small displacement engines, and both uses a small secondary and larger primary Turbom, to provide low and high end boost. i.e. A sequential set up.

The GTO/3000GT/VR4 and the 300z both use one small turbo for each bank of cylinders.
The VR4 in Japan by the way is the Gallant. The early ones used the same engine as the EVO, and were in fact know as the EVO 0's as they were the test bed for the EVO 1 running gear.
The later Gallant VR4s then became fat and heavy, and gained a samll 2l Twin Turbo V6. Which I believe use's a sequential Turbo set up.

alot of you dont realize that the impreza doesnt have enough power for twin turbo... your giong to be getting mad turbo lag if you even try... no matter how small the twin turbos are, its still takes ALOT more exaust pressure to get them to spool...

Originally posted by Gonthrax


Sense when? Last time I checked the closest an STi got to two turbos was the B4 it sat next to on the lot :D :D






well bugger :( I guess a larger single turbo must be what contributed to the massive 50Kw gain
:) :)

the rule with forced induction is (espesially with superchargers, i think sequential is best in turbos) a big turbo/supercharger loves a smaller engine. basically bigger is better.

Hey, the 3.5L V12 of Bugatti EB110 fame had 4 turbos, so a TT WRX would be possible.

Also, instead of sequential turbos, how about a turbo and a blower. the blower for low rpm, the turbo for high. It has been done. Quite driveable, apparently.

And about turbo lag, if you are driving hard, you will have the engine on boil, and turbo lag won't be a problem.

also, you could use a larger turbo (t6) ands instead of having the exhaust gas power it, use a supercharger to spool up the turbo.

So you are suggesting having a belt attached to the turbo's turbine. This is a Lysholm type supercharger (no exhaust gas, tho)

But your way could make some sense, if the belt could be dissengaged once the turbo passed a certain RPM. So, say, the engine maintains the turbo at least at 20000rpm, and after that, the exhaust spins it.
A few problems: the belt would need to be variable (A la CVT's), so that at idle, the turbo would spin fast, but at, say, 2500rpm, the turbo isn't being overdriven (the exhaust is not fast enough, so the engine is now driving the blower, at, say 50000rpm. Still safe, but the idea is lost)

Originally posted by Chris
So you are suggesting having a belt attached to the turbo's turbine. This is a Lysholm type supercharger (no exhaust gas, tho)


Lysholms are "screw compressors", the Vortech chargers are basically a belt driven turbocharger.

your right, they are, thus no lag.

Originally posted by SkylinesKillAll
ok this kid my friend knows says his WRX is twin turbo. please jus say no its not so i can show him how dumb he really is. thanx
pop the hood and show him......what dosen't he know what a turbo looks like?

Originally posted by Deakins


Lysholms are "screw compressors", the Vortech chargers are basically a belt driven turbocharger.
anything belt driven is a supercharger. Turbo's use exaust gases. supercharger's have no lag time but in turn draw engine power from the vehicle. besides a turbo that small has like no lag anyway.

I wasn't talking to you.

Originally posted by Deakins
I wasn't talking to you.
just proving a point.

What point? No one was saying anything else.
Seeing you still think a supercharger is a supercharger, why quote me? I was only correcting Chris.

Originally posted by Deakins
What point? No one was saying anything else.
Seeing you still think a supercharger is a supercharger, why quote me? I was only correcting Chris.
....right...... you said turbo.....he said supercharger........he was right.....
not flaming just saying anything belt driven in this case is a supercharger.

Originally posted by hybridsol

....right...... you said turbo.....he said supercharger........he was right.....
not flaming just saying anything belt driven in this case is a supercharger.

Have you seen a Vortech charger, or a Lysholm for that matter?

Originally posted by Deakins


Have you seen a Vortech charger, or a Lysholm for that matter?
yes, they can call them what they like if its belt driven its still a supercharger. Also the lag on a turbo is nothing compared to the power strain from a supercharger, well depending on the size of the turbo.

When did I say the Vortech charger was a turbocharger?

supercharger's have three types- roots, centrifugal, twin-screw
Roots are positive displacemente units, which means every rev of the blower pumps out a fixed volume of air, regardless of the blower's rpm. Result is that boost comes on early. Most application produce full boost at 2000-2500rpm. Boost can be altered by changing pulley size. Best to underdrive larger unit than to overdrive smaller one. Manufacturers of this product include B&M, Littlefield, Sebring. then you have Centrifugal the most popular type for fuel injected engines. this sys. Provides airflow proportional to blower rpm, thus full boost comes as high rpm. Manufacturers include Accessible Technologies, B&M, Nelson, Paxton, (Vortech) next we have twin-screw positive displacement, similar to roots. the differences are it uses twin screws instead of lobed rotos to compress air, works best when overdriven. Sample of those are Whipple Industries. (Lysholm screw Supercharger) a Lysholm supercharger looks similar to a helical Roots blower, but with rotors that are far more twisted, and have a conical taper. The result is that these "screw-type" compressors have an internal compression ratio, making them more efficient in high-boot applications.
One disadvantage of this internal compression ratio is higher parasitic losses during off-boost operation (and engine strain).

Originally posted by Deakins
turbocharger.

You still didn't answer my question

Originally posted by Deakins
You still didn't answer my question
contrary to what you believe there is a difference between super and turbo, and is conical a word, I can't think of a different way to say it?

I said the Vortech charger is basically a belt driven turbocharger, not a turbocharger.
And I must say I admire your copy&pase skills, you rock!

Originally posted by Deakins
I said the Vortech charger is basically a belt driven turbocharger, not a turbocharger.
And I must say I admire your copy&pase skills, you rock!
where did I copy paste from? you said they were a belt driven turbocharger. I was just pointing out chris's point that anything belt driven is a supercharger not a turbocharger. super and turbo....different. One use exaust gasses one use belt............

Its a single turbo, and deakins learn the diffrence between a supercharger and a turbocharger. they are NOT the same, the only thing that is the same is that they both spool a turbine.

Originally posted by Chris
So you are suggesting having a belt attached to the turbo's turbine. This is a Lysholm type supercharger (no exhaust gas, tho)

Originally posted by Deakins

Lysholms are "screw compressors", the Vortech chargers are basically a belt driven turbocharger.
Originally posted by hybridsol

anything belt driven is a supercharger. Turbo's use exaust gases. supercharger's have no lag time but in turn draw engine power from the vehicle. besides a turbo that small has like no lag anyway.

What did Chris say?

And you are a mechanical engineering major. :rolleyes:


http://www.miata.net/garage/turbos.html
"3 basic styles: roots, centrifugal, twin-screw

Roots: positive displacemente units, which means every rev of the blower pumps out a fixed volume of air, regardless of the blower's rpm. Result is that boost comes on early. Most application produce full boost at 2000-2500rpm. Boost can be altered by changing pulley size. Best to underdrive larger unit than to overdrive smaller one. Manufacturers include B&M, Littlefield, Sebring.
Centrifugal: Most popular type for fuel injected engines. Provides airflow proportional to blower rpm, thus full boost comes as high rpm. Manufacturers include Accessible Technologies, B&M, Nelson, Paxton, Vortech.
Twin-screw: positive displacement, similar to roots. differences: uses twin screws instead of lobed rotos to compress air, works best when overdriven. Sample manufacturer: Whipple Industries."

http://www.sportcompactcarweb.com/tech/0107scc_garage/
"The Lysholm supercharger looks similar to a helical Roots blower, but with rotors that are far more twisted, and have a conical taper. The result is that these "screw-type" compressors have an internal compression ratio, making them more efficient in high-boot applications.

One disadvantage of this internal compression ratio is higher parasitic losses during off-boost operation."

Originally posted by SkunkSI
Its a single turbo, and deakins learn the diffrence between a supercharger and a turbocharger. they are NOT the same, the only thing that is the same is that they both spool a turbine.
alright lets not start flaming, deakins everyone is entitled to there opinion i'll respect yours. :)

Originally posted by SkunkSI
deakins learn the diffrence between a supercharger and a turbocharger. they are NOT the same, the only thing that is the same is that they both spool a turbine.

No they don't. The Vortech charger is the only supercharger with a turbine. Just like I said, and Chris meant to say.

Originally posted by Deakins


What did Chris say?

And you are a mechanical engineering major. :rolleyes:


http://www.miata.net/garage/turbos.html
"3 basic styles: roots, centrifugal, twin-screw

Roots: positive displacemente units, which means every rev of the blower pumps out a fixed volume of air, regardless of the blower's rpm. Result is that boost comes on early. Most application produce full boost at 2000-2500rpm. Boost can be altered by changing pulley size. Best to underdrive larger unit than to overdrive smaller one. Manufacturers include B&M, Littlefield, Sebring.
Centrifugal: Most popular type for fuel injected engines. Provides airflow proportional to blower rpm, thus full boost comes as high rpm. Manufacturers include Accessible Technologies, B&M, Nelson, Paxton, Vortech.
Twin-screw: positive displacement, similar to roots. differences: uses twin screws instead of lobed rotos to compress air, works best when overdriven. Sample manufacturer: Whipple Industries."

http://www.sportcompactcarweb.com/tech/0107scc_garage/
"The Lysholm supercharger looks similar to a helical Roots blower, but with rotors that are far more twisted, and have a conical taper. The result is that these "screw-type" compressors have an internal compression ratio, making them more efficient in high-boot applications.

One disadvantage of this internal compression ratio is higher parasitic losses during off-boost operation."
ok thats only half of what I said.....I was going to let it go but you just have proven me right.. I got my info from an induction chapter in my c-215 book written by bell a chapter intitled forced induction pg 78 paragraph 2 check it. and yes I am a mechanical engineer. what do you do?

Originally posted by Deakins


No they don't. The Vortech charger is the only supercharger with a turbine. Just like I said, and Chris meant to say.
they all use turbines how else would the air be forced, wether it be a series or just one that air compressor is a turbine, also if being forced in means of compression like a piston movement.

omg! A Berkeley professor saying all superchargers have turbines?

Originally posted by hybridsol

ok thats only half of what I said.....I was going to let it go but you just have proven me right.. I got my info from an induction chapter in my c-215 book written by bell a chapter intitled forced induction pg 78 paragraph 2 check it. and yes I am a mechanical engineer. what do you do?

So you copied of a book and not a site, good for you.