Welcome to the North American Subaru Impreza Owners Club Wednesday October 1, 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 06-15-2004, 11:21 AM   #1
maxiav
Scooby Specialist
 
Member#: 40413
Join Date: Jul 2003
Vehicle:
2001 BRP RS-T EJ257
Link'd - 252WHP 274WTQ

Default Injectors in a 2001 RST

Ok, I've done the reading, and the searches, and everything points to aftermrket injectors (RC, Bosch)...

My question is... isn't the intake manifold of the 2001 RS pretty much the same as the 2004 STI????.... If it is.... and I think it is, why is it that STI injectors don't fit?

Just trying to see if anybody has actually TRIED installing STI injectors on an 00-01 RS intake manifold.
* Registered users of the site do not see these ads.
maxiav is offline   Reply With Quote
Old 06-16-2004, 12:35 AM   #2
decepticon
Scooby Newbie
 
Member#: 18129
Join Date: Apr 2002
Location: columbus, Ohio
Vehicle:
1999 2.5RS-T Impreza
Silverthorn metalic

Default

I have a 99 RS-T and i'm currently having the same problem! I bought STi injectors (because i was told they will fit) and when i went to install them into my Vishnu fuel rails, they don't seem to fit "snug" in the rails, as if the rubber around the top of the injectors were too small, but they do seem to fit fine in the engine itself.

I told a local shop about my problem and they said i need a wrx intake manifold because i guess my fuel rails that i got from Vishnu are for a WRX even though i ordered 2.5RS ones, but i cut the spacers down to make them fit....i really don't see how this will fix my problem because the injectors arn't fitting into the fuel rails themselves.

Does anyone know what injectors will fit in my Vishnu fuel rails? or any fuel rails that WILL work for my 2.5RS? I need more fuel badly!!! Please help!!! Thanks!!!
decepticon is offline   Reply With Quote
Old 06-16-2004, 02:49 AM   #3
ChAi
Scooby Specialist
 
Member#: 1277
Join Date: Apr 2000
Chapter/Region: NWIC
Location: issaquah, WA
Vehicle:
1999 Minnam Stage 2
Cobb Stage3 engine, TEC3

Default

i use Vishnu fuel rails with 600cc RC injector it work find
ChAi is offline   Reply With Quote
Old 06-16-2004, 07:34 AM   #4
Hitokiri
Scooby Specialist
 
Member#: 2604
Join Date: Oct 2000
Chapter/Region: NESIC
Location: CA
Vehicle:
1999 2.5RSt
RBP

Default

you know how people mod their WRX injectors so they flow ~740cc?

if you read the larger thread on this modification of WRX blues you will find that several people have succeeded at modding RS style injectors to about the same flowrate. It is much more involved and requires basically better dremeling skills or a machine shop to get it done right.

The problem is that there a a restrictor cap over all subaru injectors that has a bunch of tiny holes in it. It is these holes that determine the spray pattern of the injector as well as the flowrate. In the thread they talk about the fact that STI pink injectors and WRX isnjectors are IDENTICAL on the inside! Someone split them both. The oly difference is in the size of the holes in the restrictor plate on the tip, and obviously the paint color of the housing.

so the thing is WRX injectors have end caps welded up on the side of the injector beyond the very tip, so that if you simply cut around the injector with a dremel the end cap will just fall off. RS injectors have a sort of a spot welded rng around the injection port. You CAN dremel out this weld and get the restrictor plate to fall off BUT you have to get much much closer to the center injection port that with WRX injectors. It CAN be done.

look here if you are brave!

http://forums.nasioc.com/forums/show...23#post6786023

Todd
Hitokiri 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
2001 RST Must sell quickly!! gotawd11 Private Vehicle 'For Sale' Classifieds 9 07-21-2006 07:14 AM
WRX GReddy FMIC in an 2K RST? Lo0mis Normally Aspirated with bolt-on Forced Induction Powertrain 6 03-11-2004 11:07 PM
Sti injectors in 01 RST bryan2.5rs Normally Aspirated with bolt-on Forced Induction Powertrain 3 02-23-2004 06:35 PM
Gauging interest on selling my 2001 RST hayscoob Private Vehicle 'For Sale' Classifieds 28 09-20-2003 11:47 PM
2001 RST 1/4 movie technozip Proven Power Bragging 4 10-21-2002 02:22 PM


All times are GMT -4. The time now is 06:03 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.