Welcome to the North American Subaru Impreza Owners Club Saturday July 12, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-14-2002, 08:55 AM   #1
onikageka
Scooby Newbie
 
Member#: 9447
Join Date: Aug 2001
Location: Denver, CO
Vehicle:
2000 Subaru Impreza
Ridge Blue Pearl

Default Twin Turbo WRX from B4?

I saw a pic of the exhaust manifold for the twin turbo Legacy B4 the other day and I was thinking that it could be adapted to a WRX fairly easily. I mean it's the same EJ20 engine. All you'd have to do it change the plumbing and relocate the battery for more room under the hood. But could this setup be make to run as a sequencial twin turbo like a Supra?
* Registered users of the site do not see these ads.
onikageka is offline   Reply With Quote
Old 02-14-2002, 09:28 AM   #2
Dori Dori
Scooby Specialist
 
Member#: 6780
Join Date: May 2001
Chapter/Region: South East
Location: South Florida
Vehicle:
1993 Nissan

Default

If it were easy, it would have been done before.
Dori Dori is offline   Reply With Quote
Old 02-14-2002, 10:56 AM   #3
nhluhr
John Wayne Toilet Paper
Moderator
 
Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

Default

Quote:
Originally posted by Dori Dori
If it were easy, it would have been done before.
and i've never heard of it being done so i'm guessing it really not easy at all!

I suppose with a lot of custom work you could pull it off. But then you'd be begging the question of "why bother?"

If you want more power, use a bigger turbo. If you want a smoother acceleration like the B4, use a different car to begin with. I'm afraid by the time you get the twin-turbo shoehorned into a WRX you'd have spent $10,000. For the price of a WRX and $10,000 to make it drive smoother, i think i'd rather have a car more like my goal to begin with (such as an audi or bmw).
nhluhr is offline   Reply With Quote
Old 02-14-2002, 01:46 PM   #4
HndaTch627
Scooby Guru
 
Member#: 6551
Join Date: May 2001
Chapter/Region: MWSOC
Location: Carol Stream, IL
Vehicle:
'01 GC8 Dinged STM
'09 Concours 14 ABS Black

Default

Quote:
Originally posted by nhluhr


and i've never heard of it being done so i'm guessing it really not easy at all!

I suppose with a lot of custom work you could pull it off. But then you'd be begging the question of "why bother?"

If you want more power, use a bigger turbo. If you want a smoother acceleration like the B4, use a different car to begin with. I'm afraid by the time you get the twin-turbo shoehorned into a WRX you'd have spent $10,000. For the price of a WRX and $10,000 to make it drive smoother, i think i'd rather have a car more like my goal to begin with (such as an audi or bmw).
something like the S4 or RS4 rings inside my head AND it has a warranty

jeremy

cool concept, way too much money to be wasted though.
HndaTch627 is offline   Reply With Quote
Old 02-14-2002, 06:59 PM   #5
bobgrice
Scooby Specialist
 
Member#: 10627
Join Date: Sep 2001
Location: Charlotte, NC
Vehicle:
2002 WRX Sedan
Platinum Silver Metallic

Default

From what I understand, and bear in mind I have no real experience here, two cylinders on this engine just don't produce enough exhaust energy to really make a potent twin turbo package.

I think that type setup would be better off reserved for a higher compression four or six cylinder.

Just what I've heard...
bobgrice is offline   Reply With Quote
Old 02-14-2002, 09:29 PM   #6
tt_ttf
Scooby Specialist
 
Member#: 4431
Join Date: Feb 2001
Chapter/Region: NWIC
Location: Lynnwood,WA,USA
Vehicle:
MY07 STi and '06 WRX
Urban Grey & WRC Blue

Default

The B4 is basically just an EJ20 with 2 smaller turbo's so that is just not the case!

It has been done. The infamous Ozmond Bros in Australia took a US coupe shell that had been imported to rally (coupe was never sold in Oz) and put the twin turbo engine from the earlier liberty into it. It was a 280hp engine just like the current b4 (basically same car/engine Subaru used on the salt flats to set that production car record back in the mid 90's)

It was the only 2 door WRX in Australia at the time as that was before the first batch of STi's was released. It was bright canary yellow

I have the article at home somewhere (on the other side of the country right now) but from memory they had a real hard time getting it to fit (one of the turbos was REAL close to the side) as the impreza frontend is just that little bit smaller than the liberty
tt_ttf is offline   Reply With Quote
Old 02-14-2002, 10:16 PM   #7
dwx
Scooby Guru
 
Member#: 8343
Join Date: Jul 2001
Chapter/Region: MWSOC
Location: Atlanta, GA
Vehicle:
2005 2012 Jeep
2013 DGM BRZ

Default

The problem that I've always heard (and has been brought up plenty of times) is that it just won't fit in a LHD car, without a bunch of work (=$$$). And if you are somewhere you can get a RHD WRX, why wouldn't you just buy an STi? I saw one other TT WRX on the net, but it was some frankenstein thing that put out like 600hp. Definitely not a stock B4 engine in there.
dwx is offline   Reply With Quote
Old 02-15-2002, 01:24 AM   #8
shirokuma
Scooby Specialist
 
Member#: 5489
Join Date: Apr 2001
Chapter/Region: NWIC
Location: The Empire of Seattle
Vehicle:
2013 FR-S
AVO Orange

Default

Quote:
Originally posted by bobgrice
From what I understand, and bear in mind I have no real experience here, two cylinders on this engine just don't produce enough exhaust energy to really make a potent twin turbo package.
The key word here is potent. It can be done, of course. But here in Japan, the Japanese tuners working with B4's and Legacies with the twin-turbo setup have been hard-pressed to get much power past 310. Single turbo setups are the ones they get to the 350hp range.

If you are looking to make something with a bit more low-end power, then a twin-turbo setup may work. It won't make quite as much mid-range power as a single turbo setup, and it won't be able to make as much peak power as a tuned single turbo setup.

And as it is, Subaru has changed the configuration of the twin turbo. While before it would make power from as little as 1000rpm, now it's dead below 1500rpm - but makes a lot more after that point. It's better than a single turbo for the low end, but in the end even they are conceding that a strong mid-range is worth more than a little better low-end.

Paul Hansen
shirokuma is offline   Reply With Quote
Old 02-15-2002, 05:34 AM   #9
spurner
Scooby Newbie
 
Member#: 7289
Join Date: Jun 2001
Location: NZ
Vehicle:
1993 Impreza WRX RA

Default

It has been done before.

Check out this article.

It sounds like a WOFTAM to me.
spurner is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Twin turbo setup from JDM ej22tt lotus2843 Private 'Wanted' Classifieds 19 02-22-2005 09:21 PM
Twin Turbo WRX kyllc2 Factory 2.0L Turbo Powertrain 26 04-14-2002 07:46 AM
Twin Turbo WRX GregUnd Texas Impreza Club Forum -- TXIC 36 02-27-2002 07:34 PM
Twin turbo WRX Greenracer6 Factory 2.0L Turbo Powertrain 6 10-17-2001 03:38 PM
Audi can do a Twin Turbo, so the B4 is do-able here...right? Mike2000GT Legacy Forum 27 04-03-2001 03:41 AM


All times are GMT -4. The time now is 02:05 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.