Welcome to the North American Subaru Impreza Owners Club Tuesday July 29, 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 > Normally Aspirated 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 02-15-2001, 08:46 PM   #1
RSer2580
Scooby Newbie
 
Member#: 4065
Join Date: Feb 2001
Location: IL
Have a Nice Day? Twin Turbo?

What would you guys think is a better move. Install an AMR turbo systems or get the WRX engine, tranny and ECU. The engine and set-up is estimated to be around $10,000 less the sale value of my 2.5L. (The WRX will most likely stay stock for a few years till I finish school) The AMR system is going on sale for $6600 but I will also need to upgrade trans, clutch, and what ever else. In fact I'm so unfamiliar with the topic I don't know if there will have to be internal mods to support the additional hp. BTW, what would you guess the cost of this mess would be. Oh, that's not to mention the electronic management systems I will need which is about $2500. (not including labor to adjust) But the initial cost is not as much a concern as the over-all cost. Which would be the better move in the long run?

[This message has been edited by RSer2580 (edited February 15, 2001).]
* Registered users of the site do not see these ads.
RSer2580 is offline   Reply With Quote
Old 02-15-2001, 09:14 PM   #2
rB5
Scooby Specialist
 
Member#: 1682
Join Date: Jun 2000
Chapter/Region: SCIC
Location: in my OBXT on the dead lawn
Vehicle:
'06 OBXT
Glacier White GF4

Question

Is there a particular reason you don't want to put a single-turbo system on your 2.5? Many RS's have gone that route & its a LOT less complicated than either a twin-turbo or engine swap.

Do a search on the TT setup; there have been good threads questioning the advantage of a TT setup on our engines.

Whatever you decide, Have Fun!
rB5 is offline   Reply With Quote
Old 02-15-2001, 09:49 PM   #3
RSer2580
Scooby Newbie
 
Member#: 4065
Join Date: Feb 2001
Location: IL
Unhappy

You are right about it being less complicated, but how fast can it possibly get? There is a 2.5L that ran in the 12's with twin turbo. That's the only reason I brought it up. But that is irrelevant cause I'm not planning to run 12's and would be satisfied if I was in the mid to upper 13's. (I just want to beat those damn stock Camaros.)

If I went the single turbo route, what would I need to change, and what would be the estimated cost? Also, how reliable is the boxer when it comes to mods...? I will prob need to change the pistons for better compression and chose some other tranny cause I hear this one is not made for higher hp, but what else? And won't I still need an electronic system management?

I don't know what brands to go with, or who to turn to. This all wheel drive thing is even hard to grasp cause I just converted from Nissan. This is a cooler company thats for sure, and things are very different here in Scooby Town.

I appreciate any info you guys can share with me. I'm trying to go the best route here and need some guidance.

[This message has been edited by RSer2580 (edited February 15, 2001).]
RSer2580 is offline   Reply With Quote
Old 02-15-2001, 09:53 PM   #4
jImp
Scooby Specialist
 
Member#: 1741
Join Date: Jun 2000
Location: San Gabriel, CA
Vehicle:
1999 Impreza 2.5 RS
Rally Blue (Sold)

Post

The stock JDM engines don't pass emissions, I don't know about the AMRs. Also, the JDM engines run on a minnimum of 98 octane? gas.

The JCsports turbo seems right for you. It has decent power and no lag.

[This message has been edited by jImp (edited February 15, 2001).]
jImp is offline   Reply With Quote
Old 02-15-2001, 10:09 PM   #5
rB5
Scooby Specialist
 
Member#: 1682
Join Date: Jun 2000
Chapter/Region: SCIC
Location: in my OBXT on the dead lawn
Vehicle:
'06 OBXT
Glacier White GF4

Post

With a single turbo you can still get PLENTY of power. I think the main theory of getting a TT is get a more linear powerband, but the 2.5 is still a very tractable engine when turbo'd. Check this thread: http://www.i-club.com/ubb-files/Foru...ML/000209.html

There are actually a lot of single-turbo kits out; a search of these forums will give you more info than you want. If i could, i would probably go with Shiv's kit with TEC-II: http://www.vishnuperformance.com/index.htm

Best advice is to do the search, and ask other i-clubbers for advice. There are a lot of other very knowledgeable people that are glad to help; they've saved my arse plenty of time!
rB5 is offline   Reply With Quote
Old 02-15-2001, 10:11 PM   #6
STi-Nismo Dood
Scooby Specialist
 
Member#: 4149
Join Date: Feb 2001
Chapter/Region: SCIC
Location: Frisco/Diego/LosAngeles
Vehicle:
MY93 Impreza 6MT
GC8.6 Aspen White

Post

How much would the total setup cost including controllers for the JCSport Turbo Kit on a 2.5L?
STi-Nismo Dood is offline   Reply With Quote
Old 02-15-2001, 10:50 PM   #7
doripreza
Scooby Newbie
 
Member#: 574
Join Date: Nov 1999
Location: Altadena,CA,USA
Vehicle:
99 Impreza RS
Black

Post

What is your reason for wanting a twin-turbo setup?

The only advantages to a twin-turbo setup vs. single is a little bit less lag and more low end torque.. thats why they always use that setup in wagons, people with TT Rx7's usually switch them to a single turbo setup because it allows a high top end than a twin turbo configuration

if your looking for bigger HP i would go with an WRX setup instead..,, i think that setup would probably be more reliable than AMR anyway just because its a stock turbo system..

<i seriously doubt either will pass smog>
my 0.02

[This message has been edited by doripreza (edited February 15, 2001).]
doripreza is offline   Reply With Quote
Old 02-16-2001, 04:20 AM   #8
brandon
Scooby Newbie
 
Member#: 1183
Join Date: Mar 2000
Vehicle:
2002 Legacy L SE Wag
1964 Lotus Elan

Post

"The JCsports turbo seems right for you. It has decent power and no lag."

I'm not commenting on the JC system, just the lag statment. ALL turbochargers have lag. Until someone comes up with a massless turbine (that spools up instantaneously), this will continue to be the case. Having said that, I'm sure it's possible the JC system has very little lag if it uses a smallish turbo.
brandon is offline   Reply With Quote
Old 02-16-2001, 05:59 AM   #9
smacksube
Scooby Specialist
 
Member#: 4067
Join Date: Feb 2001
Vehicle:
01 2.5 rs
silver

Post

the jc sports turbo is super over priced, 3g's for a turbo???? that's insane, you don't get gauges, and I think last time I checked the kit left out the hot side pipes, but that's besides the point, if you just took the time to buy all the parts individually, you'd get better components and it'd probably be a couple hundred cheaper, especially if you do your own install. And the turbo that comes in the kit is not impressive at all, but oh well. The only problem I have right now is getting my manifold custom made, which is a tad pricey.
smacksube is offline   Reply With Quote
Old 02-16-2001, 06:02 AM   #10
smacksube
Scooby Specialist
 
Member#: 4067
Join Date: Feb 2001
Vehicle:
01 2.5 rs
silver

Post

instead of going a wrx swap route, why not consider building another 2.5 from the bottom up? If you get a closed deck you can run mad boost, and then as you build up the block you can put on whatever you want, this is what I think I'm going to do. I've heard that turbo-ing the stock 2.5 block will pose problems with the exhaust port or something crazy like that, either way if you build another engine, then you can rag it out and have a back up....
smacksube is offline   Reply With Quote
Old 02-16-2001, 06:10 AM   #11
XT6Wagon
Scooby Specialist
 
Member#: 524
Join Date: Nov 1999
Location: WA
Vehicle:
04 STi
White

Post

yes you can. AMR's may be the top of the line, but you could build your own setup for less.

It looks like the 01 is the easiest to do it on, as it seems to have the least crap under the hood.

I'd get a pair of legacy Turbo Turbochargers, and a twin entry air/water IC. Oh and a Tec II might be in order to keep the motor happy.
XT6Wagon is offline   Reply With Quote
Old 02-16-2001, 08:38 AM   #12
jImp
Scooby Specialist
 
Member#: 1741
Join Date: Jun 2000
Location: San Gabriel, CA
Vehicle:
1999 Impreza 2.5 RS
Rally Blue (Sold)

Post

Yes I meant to say that the JC Sports kit has very little lag. Also if you buy one of the used kits on the board the price isn't too bad.
jImp is offline   Reply With Quote
Old 02-16-2001, 09:50 AM   #13
RSer2580
Scooby Newbie
 
Member#: 4065
Join Date: Feb 2001
Location: IL
Post

Okay, so far you guys did a great job explaining your opinions--but I still don't see where the single turbo is an advantage to a WRX engine swap.

I mean, I know anything can be reliable when you put enough money into it. You could mod the thing till you go broke! But I want the most amount of reliability for the least amount of money--just like the rest of you. Sinced I'm still in school, I can only afford about $8000. If I can get away with spending less, it's even better. So...WRX swap or Tubo?

Is it even possible to get into mid to upper 13's for this amount of money? Also, what do these terms mean: AMR and JDM?
RSer2580 is offline   Reply With Quote
Old 02-16-2001, 11:38 AM   #14
Pinoy
Scooby Newbie
 
Member#: 400
Join Date: Oct 1999
Location: San Pedro
Vehicle:
1990 300ZXTT
Black

Post

If 13's is all you want... the most bang for the buck would be... NOS. But for 8G's you could be in the 12's all day. E-mail Byron from B-spec. Something about using a brand new 2.2 block, your 2.5 heads brand new FMIC, forgot what turbo, bigger fuel injectors, and WOLF computer. Hes really cool and very knowledgeable with tuning the scoobies.

[This message has been edited by Pinoy (edited February 16, 2001).]
Pinoy is offline   Reply With Quote
Old 02-16-2001, 11:58 AM   #15
efoo
Scooby Specialist
 
Member#: 80
Join Date: Jul 1999
Post

I honestly don't think you can afford to have a turbo in your present situation. It is not a bolt-and-forget affair. If you're talking about being a student and needing a reliable car to get to classes, have fun on weekends, go on dates, whatever, and mixing "goes fast as heck" and "cheap" in the same sentence as well, then I don't think you really understand what it takes.
Nothing personal, but it seems to be a common misconception, especially among people who don't have turbos themselves in their cars.

I would highly recommend that if you can afford the $10,000 needed for a WRX engine swap, then you can afford to trade in your car for a new 2002 WRX and take the small hit on the trade-in. You're a student -- do you really want to drive around watching your gauges all day making sure your grafted-on turbo or spliced-in WRX wiring harness is working right? Or would you rather have fun talking with your friends in the car? No matter how well the swap, or turbo install, is done, you always know in the back of your mind that your car has had something major done to it, and it will never be quite the same again.

Keep that in mind. And oh yeah, I do have a turbocharged 2.5RS. I wouldn't give it up for anything else in the world, and I do drive it to work as well as on the track, but my peace of mind (which is worth untold amounts of money to me - is it to you?) comes from the fact that I also have a 1996 Impreza Outback wagon -- bone stock and with a 2-year extended powertrain warranty, back in the garage. Can you say the same thing about yourself?

-Edwin
efoo is offline   Reply With Quote
Old 02-16-2001, 01:28 PM   #16
Pinoy
Scooby Newbie
 
Member#: 400
Join Date: Oct 1999
Location: San Pedro
Vehicle:
1990 300ZXTT
Black

Post

McCavity- here ya go. www.b-specusa.com

pic of his car::

<IMG SRC="http://www.b-specusa.com/bspecusaindex.jpg" border=0>
Pinoy is offline   Reply With Quote
Old 02-16-2001, 09:14 PM   #17
GTBGUY
Scooby Specialist
 
Member#: 2003
Join Date: Aug 2000
Location: Calgary, Alberta, Canada
Vehicle:
'99 BGP Legacy GT
'98 QS Legacy L (auto)

Post

Pinoy & everyone else - FYI BSpec's car is JC SPORTS old '93L Sedan! JC SPORTS built that car, and B-Spec just added the the body kit.
GTBGUY is offline   Reply With Quote
Old 02-17-2001, 12:35 AM   #18
Jessie James
Scooby Specialist
 
Member#: 2072
Join Date: Aug 2000
Chapter/Region: MAIC
Location: Out of my mind
Question

Hey Pinoy,

Who is that Byron guy at B-Spec? Do you have a website or email address for him? I have a question or two about that setup for him...

Mac
Jessie James is offline   Reply With Quote
Old 02-17-2001, 01:57 AM   #19
Kevin Thomas
Street Racing Instructor
Moderator
 
Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Post

Does ANYONE have a twin turbo kit yet from AMR?

Kevin Thomas is offline   Reply With Quote
Old 02-17-2001, 10:03 AM   #20
Lix
Scooby Newbie
 
Member#: 1560
Join Date: May 2000
Location: San Mateo,Ca,USA
Post

I don't even think AMR has one yet.
Lix is offline   Reply With Quote
Old 02-17-2001, 10:25 AM   #21
JC
NASIOC Supporter
 
Member#: 692
Join Date: Dec 1999
Chapter/Region: SCIC
Vehicle:
2006 Pontiac GTO M6
Triumph Street Triple R

Post

B-Spec did ALOT more than add a body kit.
JC is offline   Reply With Quote
Old 02-18-2001, 05:07 PM   #22
RSer2580
Scooby Newbie
 
Member#: 4065
Join Date: Feb 2001
Location: IL
Post

Thanks Pinoy, I went to the site, it will be a great help.

At http://www.b-specusa.com/parts.html
The core and crank exchange look like a good set-up for a turbo. But I don't know what kind of turbo I would need. I wand to hear some opinions before I get in touch with b-spec or anyone else. Does anyone have any suggestions?

And how would I get my hands on a trans to replace my current one? If you guys could give me links to either it would help out a lot.

Also, will I need to replace the clutch if I do this upgrade, or will the stock one hold?

Thanks everyone for the input, everyone of them counts. Even the ones that are as conservative as Edwin's . I know I prob shouldn't be wasting my money on my car, but I just hate loosing to my friend's ugly cars. And I can't stand losing to Eclipses and Camaros'.
RSer2580 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
FS/FT 1997 VR4 Vacuum Leak $6,500 Twin Turbo Twin Intercooler Meat9834 Private Vehicle 'For Sale' Classifieds 14 01-04-2010 05:49 PM
Twin Turbo and Twin Supercharged Nissan GT-R bend_bugeye Non-Subaru News & Rumors 14 10-15-2009 07:36 PM
Twin Engine, Twin Turbo, 626WHP, 1997 Tiburon, 10.92 1/4 mile on STREET tires alien_sporez Private Vehicle 'For Sale' Classifieds 3 05-04-2008 12:49 AM
What company's offer twin scroll twin turbo kits for the sti? GT42r Factory 2.5L Turbo Powertrain 32 09-12-2007 10:27 AM
Will the twin turbo EJ20 fit 91-94 Legacy turbo? jwooman Legacy Forum 5 05-02-2001 12:26 AM


All times are GMT -4. The time now is 11:09 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.