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Old 26-07-2007, 12:40 PM
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Thumbs up IHI VF46 - 5 arc scroll turbo
Quote:
Dear Mr. XXXXXXX:

Thank you for visiting the Subaru web site and for your message!

The VF40 is a more traditional turbocharger. The VF46 is the world's first 5-arc scroll turbo. This new design has been adopted for the turbocharger compressor. By adjusting the flow of compressor air and improving compression efficiency, low and midrange torque has been increased/improved.

In a separate email message where I can include attachments, I will send you a diagram of the resulting differences in airflow.

Thank you for your message and if you have any other questions, do not hesitate to reply to this email.

Sincerely,

Samir Hasan
Subaru of America, Inc.
Customer/Dealer Services Department
5 Arc Scroll Compressor Pic

Is this the new turbo on the 07 Oz Liberty GT's including STi version ?

I also suspect a similar new turbo compressor housing type is being used on the 08 WRX and STi in the never ending quest to reduce turbo lag at minimal cost along with dual AVCS.

J
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Last edited by WRXTASY; 26-07-2007 at 01:05 PM.
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Old 26-07-2007, 12:52 PM
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interesting stuff, it may be US only too...
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Old 26-07-2007, 01:28 PM
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Having a read through this link pretty much seperates the facts from the fiction for the 08 WRX, US market anyway:

http://forums.nasioc.com/forums/show....php?t=1293208

What is interesting is no more rear LSD on WRX now that VDC (Vehicle Dynamics Conrol) is being introduced.

VDC Explained - Nice Subaru Site!!
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Last edited by WRXTASY; 26-07-2007 at 02:18 PM.
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Old 26-07-2007, 02:22 PM
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Quote:
Originally Posted by WRXTASY
5 Arc Scroll Compressor Pic

Is this the new turbo on the 07 Oz Liberty GT's including STi version ?

I also suspect a similar new turbo compressor housing type is being used on the 08 WRX and STi in the never ending quest to reduce turbo lag at minimal cost along with dual AVCS.

J
I hope it is but I am getting under the heat shield this weekend and will take some pics!
rada likes this.
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Old 26-07-2007, 02:28 PM
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Dave, does your STi GT have dual AVCS.

IE intake AND exhaust ?
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Old 26-07-2007, 02:39 PM
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Quote:
Originally Posted by WRXTASY
Dave, does your STi GT have dual AVCS.

IE intake AND exhaust ?
I am lead to believe this is the case http://www.drive.subaru.com/Win05_WhatsInside.htm
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Old 31-07-2007, 02:30 PM
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Quote:
Originally Posted by WRXTASY
5 Arc Scroll Compressor Pic

Is this the new turbo on the 07 Oz Liberty GT's including STi version ?

I also suspect a similar new turbo compressor housing type is being used on the 08 WRX and STi in the never ending quest to reduce turbo lag at minimal cost along with dual AVCS.

J
I sent Subaru Australia an email asking them about turbo that comes stock on MY07 Liberty GT Spec B Tuned by STI. Essentially is this a VF-46 turbo and here the reply I got from them.

Dear Mr Hinton,

Thank you for your email to Feedback at Subaru.

The Turbo in your vehicle is known as a 5-Arc Scroll Turbo, the worlds
first five-arc scroll turbo which has been adopted for the turbo
charger. By correcting the flow of exhaust in the compressor, and
improving compressor efficiency, the low and mid-speed torque has been
increased for the MY07 Liberty GT-B, this turbo is the same as all
Liberty GT models, no other technical information has been provided by
the factory in Japan.

We hope the information provided is of assistance.

Kind Regards,

Amanda Burne | Customer Relations Representative
Subaru (Aust) Pty Limited
Level 4, 4 Burbank Place | Baulkham Hills | NSW 2153
f 02 9828 9284
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Old 31-07-2007, 02:54 PM
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In true simpsons style.

Oh you..

Does Amanda come with the car? *tehehehe*
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Old 31-07-2007, 02:59 PM
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Quote:
Originally Posted by Intra
In true simpsons style.

Oh you..

Does Amanda come with the car? *tehehehe*
bahahahah I will have to ask her and get back to you!

Now where's my verso tune!!!!!!!!!!
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Old 31-07-2007, 04:31 PM
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just add boost dave
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