Welcome to the North American Subaru Impreza Owners Club Saturday August 30, 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 08-21-2011, 10:48 PM   #1
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default S204 engine swap in 2002 WRX

hello everyone, have not been on this forum in a very long time. i recently bought a S204 engine and drivetrain swap from ebay and had some questions on wiring and just thought id make a tread to post some pics and show the progress of the swap.

i will be installing the transmission in 1st just to test it out since my 5 speed is taking a dump.


i was also wondering if anyone knew if the S204 pistons are hypercast or forged?

when i received it.


got the ECU too


intercooler comparison to a USDM 05 STi one.


put the motor on the stand for some cleaning up


engine number




VF42 twin scroll


really clean on the bottom.


port looks alot bigger than my 05 STi head port.


and finally the car this swap is going in

* Registered users of the site do not see these ads.
805WRX is offline   Reply With Quote
Old 08-21-2011, 11:23 PM   #2
ck_wagon
Scooby Newbie
 
Member#: 292102
Join Date: Aug 2011
Default

Amazing. How much did the motor cost you if you don't mind me asking?
ck_wagon is offline   Reply With Quote
Old 08-21-2011, 11:32 PM   #3
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by ck_wagon View Post
Amazing. How much did the motor cost you if you don't mind me asking?
7800, it had 18k KM on it.
805WRX is offline   Reply With Quote
Old 08-21-2011, 11:42 PM   #4
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

got front subframe too, it has a extra brace in bolted to it.

805WRX is offline   Reply With Quote
Old 08-22-2011, 02:07 AM   #5
SGC2CIC
Scooby Specialist
 
Member#: 286908
Join Date: Jun 2011
Chapter/Region: TXIC
Location: Dallas Texas
Vehicle:
2014 EVO X GSR

Default

Looks fun, just will give you nightmares when you need to replace a part and its only avail in japan.
SGC2CIC is offline   Reply With Quote
Old 08-22-2011, 05:19 AM   #6
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by SGC2CIC View Post
Looks fun, just will give you nightmares when you need to replace a part and its only avail in japan.
good thing its low mileage motor
805WRX is offline   Reply With Quote
Old 08-22-2011, 07:36 AM   #7
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

You'll find more help in the EJ207 thread. There is more Ej257 stuff here, although some JDM egines.
I pretty much completed my installation of a Version 9 Spec C, let me know what you're looking to do.
I know you were looking for the AVCS and you were told to get it from IA performance.
This is where I got it as well.
You have the transmission that comes with this, so you won't have the Neutral switch related problems.

You may want to replace the oil pick-up with the killer bee one, because the pick-up is the same part number as the one in the USDM Sti, that breaks after a while. I did this for safety.

You may want to enable the oil cooling via an oil radiator, which this engine is needing, as opposed to an oil cooler.

I would keep it's power steering and A/C, both are more performance oriented. And I can tell you that the A/C is still plenty cold and that the power steering pump is good enough for a Q-rack. By that I mean, you can't overwhelm it by turning abruptly.

Why did you strip the top of the engine?

Oh and if you're going to sell the Vf42, please let me know.

Last edited by Vlad; 08-22-2011 at 07:43 AM.
Vlad is offline   Reply With Quote
Old 08-22-2011, 08:49 AM   #8
A-man07
Scooby Specialist
 
Member#: 271525
Join Date: Jan 2011
Location: BagEnd
Vehicle:
07 STi
424whp/382wtq GT3076

Default

Quote:
Originally Posted by Vlad View Post
I would keep it's power steering and A/C, both are more performance oriented. And I can tell you that the A/C is still plenty cold and that the power steering pump is good enough for a Q-rack. By that I mean, you can't overwhelm it by turning abruptly.
Happen to have the part #s on those A/C and P/S units? I take it the A/C compressor is a lighter version? TIA
A-man07 is offline   Reply With Quote
Old 08-22-2011, 09:53 AM   #9
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

Power steering
yours is 34430FE042
The V9 is 34430FE072

A/C

73111FE030
VS your
73111FE040

Last edited by Vlad; 08-22-2011 at 09:58 AM.
Vlad is offline   Reply With Quote
Old 08-22-2011, 05:59 PM   #10
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by Vlad View Post
You'll find more help in the EJ207 thread. There is more Ej257 stuff here, although some JDM egines.
I pretty much completed my installation of a Version 9 Spec C, let me know what you're looking to do.
I know you were looking for the AVCS and you were told to get it from IA performance.
This is where I got it as well.
You have the transmission that comes with this, so you won't have the Neutral switch related problems.

You may want to replace the oil pick-up with the killer bee one, because the pick-up is the same part number as the one in the USDM Sti, that breaks after a while. I did this for safety.

You may want to enable the oil cooling via an oil radiator, which this engine is needing, as opposed to an oil cooler.

I would keep it's power steering and A/C, both are more performance oriented. And I can tell you that the A/C is still plenty cold and that the power steering pump is good enough for a Q-rack. By that I mean, you can't overwhelm it by turning abruptly.

Why did you strip the top of the engine?

Oh and if you're going to sell the Vf42, please let me know.
thanks for the info man, yea i was planning on keeping the AC and PS pump. i stripped the top half of the motor just to inspect everything and replace the manifold gaskets.

i also got a oil cooler.
805WRX is offline   Reply With Quote
Old 08-23-2011, 01:32 AM   #11
wrx surfwagon
Scooby Specialist
 
Member#: 262719
Join Date: Nov 2010
Chapter/Region: NESIC
Location: Connecticut
Vehicle:
02 WRX
PSM with rust accents

Default

showoff
Really nice purchase and super clean bugeye, update us with some graphs if you get dyno tuned!
wrx surfwagon is offline   Reply With Quote
Old 08-23-2011, 07:49 AM   #12
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

I laminated my label on top of the black timing cover.
Heat has a tendency to damage it. Once that label is gone, in the future, you would have to make a request to Subaru, for them to link the carved number on the block, with a part number.
In other words, if the label is gone, it would be difficult to show what exactly the engine is.

As far as the intercooler, as much as the one you have being the most advanced before the GRB body style, the GRB (08+ Sti) is still bigger.

You could make some money, if you sell this intercooler in the right forum.

There is a guy selling right now the oil radiator that comes with a V9 Spec C.
It picks up from the oil manifold pipes, climbs up with hard pipe behind and underneath the passenger headlight, then comes out under the headlight and transfers into rubber hoses to the oil radiator that is mounted in the bottom right side of the coolant radiator.

I bought everything, but could not bring myself to install a used oil radiator, so found an equivalent-identical CXA and used some brass fittings to adapt to the rubber hoses.

Apparently, Subaru had some kind of TSB on clamping the rubber hoses and double clamps them these days. I had to buy those from Japan, and got brand new hoses from them as well.
If you look up, there's a sad story about a Spec C going in flames at the track somewhere in NZ or AUS, due to oil bursting out of a hose, probably over the headers.

When the engine is in the car, you will see how it is challenging to route things with the headers from the twinscroll in the way.

If you have an aluminum radiator, the lower radiator fan plastic support will be too close to the headers in the corner by the oil manifold.

Also, you may have to modify the splash guard.
The twinscroll one drops down lower.
I glued aluminum on top of the inner splash plate, to prevent it from melting because of the twinscroll OEM headers.

Last edited by Vlad; 08-23-2011 at 07:56 AM.
Vlad is offline   Reply With Quote
Old 08-23-2011, 10:54 AM   #13
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by Vlad View Post
I laminated my label on top of the black timing cover.
Heat has a tendency to damage it. Once that label is gone, in the future, you would have to make a request to Subaru, for them to link the carved number on the block, with a part number.
In other words, if the label is gone, it would be difficult to show what exactly the engine is.

As far as the intercooler, as much as the one you have being the most advanced before the GRB body style, the GRB (08+ Sti) is still bigger.

You could make some money, if you sell this intercooler in the right forum.

There is a guy selling right now the oil radiator that comes with a V9 Spec C.
It picks up from the oil manifold pipes, climbs up with hard pipe behind and underneath the passenger headlight, then comes out under the headlight and transfers into rubber hoses to the oil radiator that is mounted in the bottom right side of the coolant radiator.

I bought everything, but could not bring myself to install a used oil radiator, so found an equivalent-identical CXA and used some brass fittings to adapt to the rubber hoses.

Apparently, Subaru had some kind of TSB on clamping the rubber hoses and double clamps them these days. I had to buy those from Japan, and got brand new hoses from them as well.
If you look up, there's a sad story about a Spec C going in flames at the track somewhere in NZ or AUS, due to oil bursting out of a hose, probably over the headers.

When the engine is in the car, you will see how it is challenging to route things with the headers from the twinscroll in the way.

If you have an aluminum radiator, the lower radiator fan plastic support will be too close to the headers in the corner by the oil manifold.

Also, you may have to modify the splash guard.
The twinscroll one drops down lower.
I glued aluminum on top of the inner splash plate, to prevent it from melting because of the twinscroll OEM headers.
damn man, definately dont want that to happen. i was planning on using some aerocoup hose with some good OE nissan 300zx oil cooler clamps that i have.

what i was really wondering is if this motor has forged pistons or not? the engine is balanced because the flywheel had some special painted marking's on it that line up with TDC.
805WRX is offline   Reply With Quote
Old 08-23-2011, 12:20 PM   #14
SG02WRX
Scooby Specialist
 
Member#: 151814
Join Date: Jun 2007
Chapter/Region: SCIC
Location: South Gate
Default

Dam looks fun, If you were any closer, I would've love to lend you a hand.
-Post Updates
-Pics
Good luck with everything.
SG02WRX is offline   Reply With Quote
Old 08-23-2011, 01:11 PM   #15
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

Hyper pistons.
The S204 had an oil radiator with braided hoses and silver radiator with Sti logo.

There were the OEM kits, that plug onto the pipes by the oil manifold and there are retrofit kits, original from Sti. These cost a lot and feature a sandwich adapter, that you don't need.

My suggestion, is to get the spec c hard pipe (it's safe), from the guy that is currently selling it in the classifieds section . He is including the top hoses. Get the bottom hoses and all clamps from IAP.

http://forums.nasioc.com/forums/show....php?t=2213810

Get the radiator from CXA racing (silver) and paint the Sti badge. It's $60 or so.
It fits exactly where tha factory has it.

Last edited by Vlad; 08-26-2011 at 08:25 PM.
Vlad is offline   Reply With Quote
Old 08-23-2011, 06:15 PM   #16
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

yea ill be posting pics of the progress as it goes. for right now i will be installing the trans. 5 speed is acting funny. Vlad thanks for the prompt replys. i read somewhere that the S204 pistons were slightly different than reg v8 v9 pistons or v8 v9 spec C pistons. i think it was higher compression. ill see if i can get my hands on the CXA core for the swap. just trying to collect everything so the car doesn't sit waiting on parts.
805WRX is offline   Reply With Quote
Old 08-23-2011, 06:16 PM   #17
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by SG02WRX View Post
Dam looks fun, If you were any closer, I would've love to lend you a hand.
-Post Updates
-Pics
Good luck with everything.
thanks man, subbie crowd super helpfull, someone in my area said they would lend me a hand too
805WRX is offline   Reply With Quote
Old 09-01-2011, 04:12 PM   #18
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

You won't have access to the removal of the AVCS line once you've installed everything back at the top of the engine.
Now is a good time to think if you want/need to update the turbo oil supply line.
One of the kits replaces that hard line with a braided stainless, as well as the turbo feed line.

If you're upgrading the turbo, you will need to replace the section of oil line that connects the pick-up on the engine block, to the turbo, because there's a restrictor in there. Once you touch that line, you need to replace that AVCS line, cause they fork from the same location.
Vlad is offline   Reply With Quote
Old 12-20-2011, 02:35 PM   #19
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

i finally got around to installing the s204 engine in the bugeye, the S204 ECU does not want to kick on the fuel pump, had to use the WRX ecu for now till i can find out why the V9 ecu does not work. the fuel pump output is not even pined on the S204 engine harness. so if anyone has access to a V9 ECU pinout that would be a big help.
805WRX is offline   Reply With Quote
Old 12-20-2011, 04:26 PM   #20
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

My v9 fired right up. I'll look up the pin for the pump when I get home.
My V9 had nothing to do with a transponder, but the S204 has a special key and I've seen those sold on yahoo Japan with a transponder box, you may need that.
In the V9 wiring diagram for JDM, a transponder box circuit is shown, but again, my Spec c does not use it.

Edit:
So, with the '02 you have A5 power, A13 to pin 9 of the fuel pump controller C15 to pin 8 of the controller

The JDM does not read fuel temperature and has no pressure control solenoid valve, drain valve, fuel tank pressure sensor.

The pinout for the JDM V9 is
A13 to pin 9
C15/C16 to pin 8
A5/A14 to power
The factor that decides for these last two is a note in Japanese, that I cannot translate (it's in paperback).
It is the same factor for both, basically the same two set of Kanji sentences
Coincidentally, the bottom sentence (refering to the pinouts that don't match the '02 WRX) is found also at the ECU pinout for immobilizer (B5 and B14)..

Last edited by Vlad; 12-21-2011 at 07:36 AM.
Vlad is offline   Reply With Quote
Old 12-21-2011, 07:45 AM   #21
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

I'm assuming that by engine harness you're talking about the harness that clips on the engine.
That would not have anything to do with the fuel pump.
The front harness, that takes you from the engine, through the firewall, to the ECU, will have the ECU on the left side, for a JDM. If you're using that, then you would have had to adapt that and some sensor locations, I think.
If you connected that to the rear USDM WRX harness, then you should really look into buying the wiring diargam from IAP, to properly integrate and sort out.
Vlad is offline   Reply With Quote
Old 12-21-2011, 05:00 PM   #22
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default

Quote:
Originally Posted by Vlad View Post
My v9 fired right up. I'll look up the pin for the pump when I get home.
My V9 had nothing to do with a transponder, but the S204 has a special key and I've seen those sold on yahoo Japan with a transponder box, you may need that.
In the V9 wiring diagram for JDM, a transponder box circuit is shown, but again, my Spec c does not use it.

Edit:
So, with the '02 you have A5 power, A13 to pin 9 of the fuel pump controller C15 to pin 8 of the controller

The JDM does not read fuel temperature and has no pressure control solenoid valve, drain valve, fuel tank pressure sensor.

The pinout for the JDM V9 is
A13 to pin 9
C15/C16 to pin 8
A5/A14 to power
The factor that decides for these last two is a note in Japanese, that I cannot translate (it's in paperback).
It is the same factor for both, basically the same two set of Kanji sentences
Coincidentally, the bottom sentence (refering to the pinouts that don't match the '02 WRX) is found also at the ECU pinout for immobilizer (B5 and B14)..
thanks for the info, ill look into this after the holidays. a little burned out with the car at the moment.

i was referring to the S204 chassis harness not the engine harness BTW were the pin for A13 VW color was non existent. we also used the IAP AVCS harness. thanks again
805WRX is offline   Reply With Quote
Old 12-21-2011, 05:47 PM   #23
805WRX
Scooby Newbie
 
Member#: 22920
Join Date: Aug 2002
Location: oxnard ca 805
Vehicle:
2005 impreza WRX STi
WR blue

Default some pics

here are some pics of the day i swapped the motor in.













805WRX is offline   Reply With Quote
Old 12-21-2011, 07:35 PM   #24
jam007
Scooby Specialist
 
Member#: 174706
Join Date: Mar 2008
Chapter/Region: SCIC
Location: Camarillo, California
Vehicle:
2004 WRX V8 EJ207
6MT, 08 Spec B

Default

Dude I need to see this thing first hand when you get it done, get this monster running!
LOL.....Let me know if you need a hand after the holidays.
jam007 is online now   Reply With Quote
Old 12-22-2011, 07:34 AM   #25
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
02 WRX
Sti V9 Spec C

Default

Connectors C and A are symmetrical and your harness twists the opposite way for the JDM location, maybe you looked at C?
BTW, for JDM it's called D.
Vlad 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
help... engine swap in my 2002 wrx jmodica Subaru Conversions 2 08-26-2008 11:36 PM
engine swap ej205 2002 wrx... help! jmodica Subaru Conversions 1 08-26-2008 11:36 PM
Jdm Sti Swap in 2002 Wrx kpmatt00 New England Impreza Club Forum -- NESIC 21 09-25-2006 08:31 AM
How long to swap a 2002 wrx motor with another 2002 wrx motor subeforlife2002 Factory 2.0L Turbo Powertrain 2 01-29-2006 02:16 PM
Who or where can I go to for a US spec WRX engine swap in the near future? Snoopy General Forum Archive 5 01-18-2001 11:30 AM


All times are GMT -4. The time now is 08:52 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.