Welcome to the North American Subaru Impreza Owners Club Monday October 20, 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 with bolt-on Forced Induction 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 10-01-2001, 04:34 PM   #1
Nick
The Godfather
 
Member#: 2
Join Date: Jul 1999
Chapter/Region: NESIC
Location: Rowley, MA
Vehicle:
2015 STI Launch Ed.
Rally Blue Pearl

Question 99-01 2.5RS Turbo Headers?

Anyone making a set compatible with the Minnam Kit?

-Nick
* Registered users of the site do not see these ads.
Nick is offline   Reply With Quote
Old 10-01-2001, 05:20 PM   #2
zzyzx
Scooby Specialist
 
Member#: 815
Join Date: Jan 2000
Location: Florida
Vehicle:
2013 Boss 302 White
2000 2.5 RS Coupe Silver

Default

Borlas? If not, please explain why not.

- Steve
zzyzx is offline   Reply With Quote
Old 10-01-2001, 05:47 PM   #3
Rev-Lab.com
Vendor
 
Member#: 7660
Join Date: Jun 2001
Location: Rev-Lab, Toronto, Ontario, Canada
Default

I'm currently working on something similar to the Borlas that will bolt up to the stock cat position (where we all have our uppipes). I will post pics when the first one is done.

Arthur
boeleni@home.com
Rev-Lab.com is offline   Reply With Quote
Old 10-01-2001, 05:54 PM   #4
kaos200
Scooby Guru
 
Member#: 2692
Join Date: Oct 2000
Chapter/Region: SCIC
Location: SoCal
Default

Quote:
Originally posted by Rev-Lab.com
I'm currently working on something similar to the Borlas that will bolt up to the stock cat position (where we all have our uppipes). I will post pics when the first one is done.

Arthur
boeleni@home.com
ETA?
kaos200 is offline   Reply With Quote
Old 10-01-2001, 06:03 PM   #5
kastle
Frank Army
 
Member#: 1457
Join Date: May 2000
Chapter/Region: SWIC
Location: Phoenix, AZ
Vehicle:
1999 Outback Sport
Steel Blue Mica

Default

I'm not running the Minnam kit, but am running the F.A.T. kit with Borla headers and a stromung turbo exhaust. So in some sense, it can be done....
kastle is offline   Reply With Quote
Old 10-01-2001, 06:34 PM   #6
8Complex

Moderator
 
Member#: 922
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: Schaumburg, IL
Vehicle:
04 FXT
Red

Default

I thought the Borla design wasn't very good for turbo'ing as the runners are larger (more lag) and they are MUCH different in runner lengths (pulses of exhaust to turbo instead of a flow, theoretically).
8Complex is offline   Reply With Quote
Old 10-02-2001, 09:00 AM   #7
STiShawn
Scooby Specialist
 
Member#: 2348
Join Date: Sep 2000
Chapter/Region: MWSOC
Location: St.Louis
Vehicle:
2006 WRX TR
Steel Grey Metallic

Default

I plan on running with my Borlas when the turbo goes on....
Kastle how does your system work? Lag, power, cracking og headers, etc...
STiShawn is offline   Reply With Quote
Old 10-02-2001, 09:12 AM   #8
Nick
The Godfather
 
Member#: 2
Join Date: Jul 1999
Chapter/Region: NESIC
Location: Rowley, MA
Vehicle:
2015 STI Launch Ed.
Rally Blue Pearl

Default

Stromung Turbo Exhaust??? Details?

I miss my dual tip stainless so much. Not that the CUSCO isn't cool... but that stromung sound is one of a kind.

-Nick
Nick is offline   Reply With Quote
Old 10-02-2001, 09:21 AM   #9
STiShawn
Scooby Specialist
 
Member#: 2348
Join Date: Sep 2000
Chapter/Region: MWSOC
Location: St.Louis
Vehicle:
2006 WRX TR
Steel Grey Metallic

Default

Nick, I too dont want to loose the stromung look or sound, hence why I bought a Brullen 3" ss cat back from GTB Guy.....very similar sound, same looks, and big tubing to boot!
STiShawn is offline   Reply With Quote
Old 10-02-2001, 03:41 PM   #10
Kcz
Scooby Newbie
 
Member#: 2038
Join Date: Aug 2000
Location: Plano, Texas
Vehicle:
2000 RS-T
Silverthorn Metallic

Default

I love my CUSCO and wouldn't take my rusty Stromung back anyday. Nick, I can't believe you miss your stromung. Back to the topic, I remember Cobb saying he was working on a equal length type header that would bolt up to the cat. I'll have to see if anything ever came of that.
Kcz is offline   Reply With Quote
Old 10-02-2001, 04:11 PM   #11
kastle
Frank Army
 
Member#: 1457
Join Date: May 2000
Chapter/Region: SWIC
Location: Phoenix, AZ
Vehicle:
1999 Outback Sport
Steel Blue Mica

Default

STiShawn ---> I have had the stromung and borla headers on since I had the turbo installed. It gives the car a deeper rumbling sound. The turbo makes it quieter than stock, obviously, but it still has that style sound. I've not noticed any lag or weirdness. Now, keep in mind that I am in hell, err Arizona, so I don't have very good times yet. The only time I did run a 1/4 mile, it was 108 degrees out. I ran a 14.1

Nick --> I called Stromung just prior to getting the kit installed and asked if he could make me a custom exhaust for the RS, using the WRX exhaust. He made 2 (one for me, one for AaronB). I'd suggest calling Scott @ Stromung and getting one.

I can't say enough good things about the exhaust. It's 2 1/2 piping and looks like it belongs on the car from the factory, just like the N/A one. The Borla's really make the car sound a little more angry and stronger, like a V6.
kastle is offline   Reply With Quote
Old 10-02-2001, 04:28 PM   #12
SubaFastR
Scooby Specialist
 
Member#: 5786
Join Date: Apr 2001
Location: RS202
Default

Revolution Motorsports is doing a few different headers.
kevin
SubaFastR is offline   Reply With Quote
Old 10-02-2001, 10:01 PM   #13
MazemaN
Scooby Newbie
 
Member#: 6380
Join Date: May 2001
Location: Dallas, Texas, USA
Vehicle:
00 RS
SilverThorn

Default borla headers, turbo, scooby sport

I have the Borla Headers and a Scooby Sport exhaust. I bought the exhaust from Cobb Tuning and it came with a mid pipe. When I go turbo, I plan on keeping the headers and scooby sport. But the down pipe will have to replace the mid-pipe. I was thinking about bending the mid-pipe about center by a few degrees, just enough to completely clear the uppipe, and enough room for the down pipe to connect to. .... ?

I can see the length of the runners affecting the turbo, but it should be very small, not enough to go back to that monotonous drone.

One drawback to the borla headers too is they are obviously thinner and more fragile. With the stock headers it might be possible to build a thick up-pipe to hold the turbo (small one) it would probably be manditory to brace the turbo with the borlas. Obviously since I've never done or seen this I could be completely wrong, but I would think it would not be good to mount the turbo only on the headers.

-Jason
MazemaN is offline   Reply With Quote
Old 10-03-2001, 12:07 PM   #14
STiShawn
Scooby Specialist
 
Member#: 2348
Join Date: Sep 2000
Chapter/Region: MWSOC
Location: St.Louis
Vehicle:
2006 WRX TR
Steel Grey Metallic

Default

My turbo has a brace supporting it, connected to the tranny..all ludespeed kits do. i still have the stock crappy manifold..I can always go back. Should I get it extrude honed?
STiShawn is offline   Reply With Quote
Old 10-03-2001, 12:17 PM   #15
SubaFastR
Scooby Specialist
 
Member#: 5786
Join Date: Apr 2001
Location: RS202
Default

Probably not worth the money yet. Spend that cash on head work, cams, or valve springs.
Kevin
SubaFastR is offline   Reply With Quote
Old 10-03-2001, 02:08 PM   #16
GooseMan
Scooby Specialist
 
Member#: 2462
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Los Angeles/Montreal
Vehicle:
2012 Volvo S60 T5
2005 Triumph Sprint ST

Default

K, I dont understand something about you EJ25 Turbo guys and your exhaust headers and stuff......

You're all talking about fitting either the stock headers or aftermarket (like borla) headers to your turbo setups, but how does that work? I mean, I'm REALLY no expert on turbos, so PLEASE, by all means, correct if I'm wrong (I know I am), but doesnt it go like this...

from the engine, exhaust port to be exact, you have a up-pipe (is it the down or up-pipe?) that goes into the turbo....

then you have a downpipe (I guess I just answered my own question) from the turbo to the rest of the exhuast, or the headers, in the subies case.

How can you fit the stock headers to this? You gotta modify them, right?

I dont get all this turbo stuff...I was looking around underneath my car, how do you fit all that over there? theres NO room! Anyone have pics or diagrams of a turbo setup on a subie? I mean like GOOD pics of the turbo itself, and the whole exhaust setup?
GooseMan is offline   Reply With Quote
Old 10-03-2001, 03:16 PM   #17
Nick
The Godfather
 
Member#: 2
Join Date: Jul 1999
Chapter/Region: NESIC
Location: Rowley, MA
Vehicle:
2015 STI Launch Ed.
Rally Blue Pearl

Default

It's not the best picture... but here goes with an explination.


  • The system connects from the exhaust ports on the engine to the headers...
  • from the headers to the uppipe...
  • the uppipe feeds into the exhaust side of the turbo and it also connected to the external wastegate...
  • the downpipe feeds back off the wastegate back into the exhaust system to send any unneeded exhaust gas out the tailpipe instead of through the turbo...



This is a close up of the uppipe, downpipe, turbo, and wastegate. It is all a little confusing, but I hope this helps you to understand it a little.

We are seeking headers that might help flow of the exhaust gas from the engine into the uppipe a little better that's all.

-Nick
Nick is offline   Reply With Quote
Old 10-03-2001, 03:33 PM   #18
GooseMan
Scooby Specialist
 
Member#: 2462
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Los Angeles/Montreal
Vehicle:
2012 Volvo S60 T5
2005 Triumph Sprint ST

Default

OOHHHHHHHHHHH!!

Damn! Ooooops! Gor some reason I thought that the turbo only fed off of ONE side of the engine....not BOTH sides. OK OK, I get it. I figured why not just slap the turbo directly to the exhasut ports? well, with a little adapter thingy. The ports are pretty close together. I dunno.

And why isnt a twin turbo a good idea? You could just bolt the turbos right up to each side, make down pipes, a Y pipe to the exhaust....no? Do they get too hot that way?

Sorry for going WAY OT!!!
GooseMan is offline   Reply With Quote
Old 10-03-2001, 04:40 PM   #19
GooseMan
Scooby Specialist
 
Member#: 2462
Join Date: Sep 2000
Chapter/Region: SCIC
Location: Los Angeles/Montreal
Vehicle:
2012 Volvo S60 T5
2005 Triumph Sprint ST

Default like.........

THIS! (man, I'm bored at work)

see? the turbos are just places under collectors beneath each exhaust port, with a Y pipe to the exhuast, and the air goes into each side of the intercooler. Kind of a fast drawing, but I hope you get the idea. I know that twin turbos have been discussed before........sorrt for going OT.....
GooseMan is offline   Reply With Quote
Old 10-03-2001, 04:43 PM   #20
STiShawn
Scooby Specialist
 
Member#: 2348
Join Date: Sep 2000
Chapter/Region: MWSOC
Location: St.Louis
Vehicle:
2006 WRX TR
Steel Grey Metallic

Default

Goose, there really isnt enough room for a TT setup, and a good single setup will out perform it.
Also, there is no room under the cylinder heads for a turbo to mount up, it would also be subjest to damage easier.
the piping works as such, from an air molecules point of view:
in the air filter
through the turbo to the intercooler
from there through the engine out the exhaust header
to the up pipe through the turbo out the down pipe
through the exhaust and out

Lots of plumbing, pretty simple though but easy to get confused
STiShawn 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
99-01 2.5RS suspension fit a 99-01 impreza TS? civic this Brakes, Steering & Suspension 3 10-15-2009 04:10 AM
Plug and Play Turbo EJ25 For 99-01 2.5rs MT rsti2.5l Engine/Power/Exhaust 0 10-06-2009 02:40 AM
WTB: 99-01 2.5rs black 2 door coupe fastfalcon94 Private 'Wanted' Classifieds 2 05-15-2008 07:21 AM
WTB 99-01 2.5RS or 99 legacy GT trans rally 763 Mid Atlantic Impreza Club -- MAIC 0 01-25-2005 02:03 PM
Spotted: white 99-01 2.5RS coupe phatroksek Tri-State Area Forum 0 01-10-2002 08:59 PM


All times are GMT -4. The time now is 12:56 AM.


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.