Welcome to the North American Subaru Impreza Owners Club Thursday October 23, 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 > Subaru Conversions

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 04-20-2005, 03:10 PM   #1
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Impreza GC8 Conversion Gurus, Double-Check my List? EJ205 -> 98 RS

OK, so I'm about to transplant a '02 EJ205 into my '98 RS.

Here's what I have:

Motor (duh)
Manifolds (intake/exhaust)
UP/DP
IC
ECU
Engine Harness
Turbo
Radiator Cap
WRX X-member (what kinda spacers/how many do I need?)
WRX Fuel pump


Here's what I want to carry over from my RS:
PS pump (I need new lines, right? Where can I get/make those?)
Alternator
AC compressor
Cruise control (will I need to trim the cable?)
Radaitor itself (How do I hook up w/ the WRX cap?)
Control arms (how am I shimming this?)


Here's what I know I still need:

Front, rear, bulkhead harness
WRX FP controller (what is this?)
New Clutch (Exedy Stage 1 sound good? Hold ~200-220 whp?)
Help wiring.

I know I'm missing some stuff... most of this I already know, but I need the Conversions Gurus' affermation. This is going in in about a month, what else should I find/need to know?

Thanks,
James
* Registered users of the site do not see these ads.
jamesfacts is offline   Reply With Quote
Old 04-20-2005, 03:44 PM   #2
agterlik
Scooby Specialist
 
Member#: 41626
Join Date: Aug 2003
Chapter/Region: NWIC
Location: Mt Vernon, WA
Vehicle:
SPB We make people
quit teh internet

Default

AND HG[quote=americanyouth]OK, so I'm about to transplant a '02 EJ205 into my '98 RS.

Here's what I have:


Here's what I want to carry over from my RS:
PS pump- you can either purchase the lines from subaru or get them customly made...I overlooked this and had to purchase them locally from subaru at 20% off and they still cost over 200 and you will also need the power steering reservor. Which is like 70 new as well. Just try to find these off a wrecked car and save yourself some cash

Cruise control good luck with this if you did not get a wrx throttle cable you will need to use the cruise control bracket on the throttle body so that everything lines up correctly....so either get the wrx throttle cable or say good by to cruise control. Plus you will probably have to find a new place to mount the cruise control unit because the turbo and DP will be in its way.

Radaitor you will just need to go to autozone and get some coolant hose/vacumm line. Also to hook the engine to the radiator the bottom stock hose will fit the top hose will need to be shortened by cutting it.


Control arms...I have the legacy xmember so I did not need to do this but I believe you just use some washers.


Here's what I know I still need:

Front, rear, bulkhead harness-bulkhead harness is the front, rear and everything....it will run you 400+ used and close to 800 I think new. You will need this and over half of it gets cut out and thrown away.
WRX FP controller (what is this?) -is a little box with 8 wires that controls the fuel pump speed. Shouls cost you less than 100 again try to source it used.

New Clutch (Exedy Stage 1 sound good) Great choice its what I got
Help wiring. Have fun.

you will also need a new front sway bar for a wrx with the endlinks and make sure you have the brackets for the bushings that attach to the crossmember

new spark plugs....if you want....

can't think of to much more off the top of my head...I am sure others will......you will also make several trips out for random hardware and hosing lol. Good luck with your swap hopefully it runs better than mine does right now
agterlik is offline   Reply With Quote
Old 04-20-2005, 04:26 PM   #3
Randoramma
Scooby Newbie
 
Member#: 60649
Join Date: Apr 2004
Chapter/Region: NWIC
Location: seattle
Vehicle:
00RS EJ205 swap

Default

I dont think you need the rear harness. I'm in the same boat as you. Based on the wiring diagrams, it only looks like you need the bulkhead and front harnesses, and the line that goes to the FMU.

Honestly I am about to just buy the harnesses...this is too stressful trying to hunt for these things everyday...

What about the boost solenoid, and the MAF sensor and housing?

Randy

Last edited by Randoramma; 04-20-2005 at 04:32 PM.
Randoramma is offline   Reply With Quote
Old 04-20-2005, 05:37 PM   #4
agterlik
Scooby Specialist
 
Member#: 41626
Join Date: Aug 2003
Chapter/Region: NWIC
Location: Mt Vernon, WA
Vehicle:
SPB We make people
quit teh internet

Default

Honestly I am about to just buy the harnesses...this is too stressful trying to hunt for these things everyday...

What about the boost solenoid, and the MAF sensor and housing?

Randy[/quote]

forgot those also dont forget the MAF sensor and your 02 sensors....and an egt sensor unless you are going aftermarket uppipe or wanna just use the 2.2k ohm resistor. As for the rear harness the only thing you need from it is the connector/plug that goes into the fuel pump control unit.
agterlik is offline   Reply With Quote
Old 04-20-2005, 06:05 PM   #5
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Default

I need the WRX-specific MAF sensor? I can't use the one already on my car?

Are you saying that the O2 sensors need to be WRX specific too? I didn't know there was any factory EGT sensor on the WRX. I was planning on using a gutted stock up-pipe... where does this 2.2k resistor factor in?

Thanks for the responses so far,
James
jamesfacts is offline   Reply With Quote
Old 04-20-2005, 06:21 PM   #6
Randoramma
Scooby Newbie
 
Member#: 60649
Join Date: Apr 2004
Chapter/Region: NWIC
Location: seattle
Vehicle:
00RS EJ205 swap

Default

For MAF sensor, hmm, not sure I was just going by what I needed to get, forgot about the 99. I know the WRX has a 5 pin connector, I know 3 of the pins.. (sig. shield. ground. ) but they might give different signal values.

The 02 sensors look different (again this is from an 00 to an 02)
The ECU pinnout reads a 4 signal front sensor (and no rear sensor). Both the first signals read the same, but the 00's last two read .2 - 4.9 . This doesn't even match the 02's heater signals of which the 00 lacks.


The front O2 is a 4 signal sensor and on 02 its a 2 sensor.

Why do you not need EGT for aftermarket or gutted up-pipe? Also no EGT sensor listed on 02 WRX ECU pinnouts?

AmericanY
Which radiator cap did you get? Stock WRX?
Randoramma is offline   Reply With Quote
Old 04-20-2005, 06:26 PM   #7
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Default

Randoramma,

I haven't looked at the wiring diagrams yet. I have a buddy who did the same conversion to the same car (another 98 RS) so I'm going to be doing the wiring based on the notes he took during his swap. I'm just trying to get together all the physical parts I need.

I wasn't aware there were any EGT sensors at all on a stock WRX. I planned on adding one later w/ gauges, but I didn't know I needed to make any provisions for a stock one.

I have the stock radiator cap that sits in between the intake manifold and the stock WRX airbox.

Thanks,
James
jamesfacts is offline   Reply With Quote
Old 04-21-2005, 01:46 AM   #8
agterlik
Scooby Specialist
 
Member#: 41626
Join Date: Aug 2003
Chapter/Region: NWIC
Location: Mt Vernon, WA
Vehicle:
SPB We make people
quit teh internet

Default

The egt is in the stock uppipe and goes to the ecu....if you use a gutted/catless uppipe the sensor would get destroyed so ppl put a 2.2k ohm resistor into the plug that would normally connect to the sensor.....in other words since you are using a gutted uppipe you do not need to worry about it.....as for the 02 sensors the plugs on the o2 sensors for the wrx are different than for the rs....you could always cut the plugs and just solder the wires together but I do not know if the rs 02 sensor reads over the same range as the wrx one.
agterlik is offline   Reply With Quote
Old 04-21-2005, 11:24 PM   #9
MyFirstDeuce
Scooby Specialist
 
Member#: 50193
Join Date: Dec 2003
Location: NJ
Vehicle:
1999 Rubasu Ziprema
Silverthorne

Default

You'll need a WRX front O2. Its actually a wideband O2. I didnt have one, so I had to pick one up at the stealership for $199. I also needed the PS lines (in/out) and reservoir. That set me back another $160.

-Al
MyFirstDeuce is offline   Reply With Quote
Old 04-22-2005, 12:59 AM   #10
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Default

Quote:
Originally Posted by MyFirstDeuce
You'll need a WRX front O2. Its actually a wideband O2. I didnt have one, so I had to pick one up at the stealership for $199. I also needed the PS lines (in/out) and reservoir. That set me back another $160.

-Al
Did you use the RS pump w/ a WRX reservoir?

Agterlik, thanks for the heads up.
jamesfacts is offline   Reply With Quote
Old 04-22-2005, 11:33 AM   #11
Randoramma
Scooby Newbie
 
Member#: 60649
Join Date: Apr 2004
Chapter/Region: NWIC
Location: seattle
Vehicle:
00RS EJ205 swap

Default

I have heard that the RS pump either will not bolt up to the ej20 block (aka bracket differences), OR the pump puts the pulley in the wrong place so it doesnt line up with the belt, OR both. Basically I have head you need to use WRX pump. However with enough time, money, and ingenuity anything is possible. I wonder what the differences are in the lines having never seen them both myself? Those suckers are expensive!

Randy
Randoramma is offline   Reply With Quote
Old 04-22-2005, 11:40 AM   #12
snowman4us
Scooby Specialist
 
Member#: 21764
Join Date: Jul 2002
Chapter/Region: RMIC
Location: Salty Lake
Vehicle:
Some GDM V8,
JDM Flat 4 X2

Default

if nobody has mentioned...a boost solenoid(or a MBC).
snowman4us is offline   Reply With Quote
Old 04-22-2005, 12:51 PM   #13
ImprezaRSfan!
Scooby Specialist
 
Member#: 13520
Join Date: Dec 2001
Chapter/Region: MAIC
Location: Springfield, VA
Vehicle:
99rs ej207 spec-c
its for sale

Default

u cant use the rs pump with the wrx ej20, u need the wrx pump, and u need to reuse ur RS pump lines, and have a shop weld the rs line thats supposed to goto the rs pump, be welded to wrx lines that goto the wrx pump

thats what i did

they disconnect down under the rack
ImprezaRSfan! is offline   Reply With Quote
Old 04-22-2005, 02:32 PM   #14
Randoramma
Scooby Newbie
 
Member#: 60649
Join Date: Apr 2004
Chapter/Region: NWIC
Location: seattle
Vehicle:
00RS EJ205 swap

Default

So you're saying you need to fab lines, and that you can't use unmodified WRX lines nor RS lines? You have to have the RS portion go to the steering rack, and the WRX portion go to the pump? Hmm, fun.

Randy
Randoramma is offline   Reply With Quote
Old 04-22-2005, 02:40 PM   #15
jamesfacts
NASIOC Supporter
 
Member#: 51282
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: Brooklyn NYC / Danbury CT
Vehicle:
98 RS
black & blue from parking

Default

Quote:
Originally Posted by Randoramma
So you're saying you need to fab lines, and that you can't use unmodified WRX lines nor RS lines? You have to have the RS portion go to the steering rack, and the WRX portion go to the pump? Hmm, fun.

Randy
I might be mistaken, as I don't have an engine bay in front of me , but aren't there soft, clamped sections between the hard lines in the steering rack and pump?
jamesfacts is offline   Reply With Quote
Old 04-22-2005, 02:54 PM   #16
Kotir
Scooby Specialist
 
Member#: 17300
Join Date: Apr 2002
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
'93 Impreza L Wagon
JDM Ver8 STi swap

Default

Quote:
Originally Posted by americanyouth
I might be mistaken, as I don't have an engine bay in front of me , but aren't there soft, clamped sections between the hard lines in the steering rack and pump?
They're "soft" but in reality PS lines are really higher pressure (like 2000psi rated) so yeah it's a bit more complicated than that.

You can either get USDM WRX PS lines which should hook up to the RS rack and the WRX PS pump obviously.

Or do what ImprezaRSFan said, which is for the JDM lines which is have the RS lines put on the end of the JDM WRX/STi PS lines (That's what I did too)

You can't use the RS PS pump on a EJ20 because the intake with a stock mount turbo goes under the intake manifold and right where the resivour sits on top of the RS PS pump. I suppose if you had a rotate mount turbo you could potentially use teh RS PS pump... /shrugs

-Tim
Kotir 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
please double check my shopping list krzemienr Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 9 05-20-2008 09:11 PM
Exhaust compatibility 02+ WRX -> 98 RS 2milehi Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 4 12-28-2006 05:13 PM
utec gurus, please check my map :) feiron Engine Management & Tuning 24 04-25-2005 03:50 PM
Soon to be RS+T check my list milkman Normally Aspirated with bolt-on Forced Induction Powertrain 18 01-06-2002 05:38 PM
IS there a way to double-check my timing belt alignment? scootr Service & Maintenance 4 10-29-2001 01:16 PM


All times are GMT -4. The time now is 02:12 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.