Welcome to the North American Subaru Impreza Owners Club Monday September 22, 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 09-27-2007, 03:14 PM   #1
singincanary
Will mod for Guinness
Moderator
 
Member#: 77921
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: Orange County, New York
Vehicle:
'02 Foz
'07 'beca, '08 OBXT

Default Engine swap, '06 2.5i into '00 2.5RS--Direct swap?

I imagine that the wiring harnesses might be a little different, but how hard is the swap of an '06 2.5i (RS) into a 2000 RS. Current engine has pretty high miles, so looking for cheap alternatives.

Hopefully not to hard. I know that the '06 doesn't have AVCS (or so I've been told).

Any help is appreciated.
* Registered users of the site do not see these ads.
singincanary is offline   Reply With Quote
Old 09-27-2007, 03:34 PM   #2
ovedrivex
*** Banned ***
 
Member#: 116774
Join Date: Jun 2006
Chapter/Region: TXIC
Location: Tropioca.com
Vehicle:
1997 Project GC8

Default

whether or not it has avcs wiring will be the hardest part.you will have to merge the engine harness with you rs chaise/dash harness. so you will need a complete wiring diagram from both cars. but as far as mechanics go it drops right in. if you ask me if your gonna do all that you would be better off wiring in a wrx engine(more options and actually worth the pita wiring)
ovedrivex is offline   Reply With Quote
Old 09-27-2007, 05:02 PM   #3
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 ovedrivex View Post
whether or not it has avcs wiring will be the hardest part.you will have to merge the engine harness with you rs chaise/dash harness. so you will need a complete wiring diagram from both cars. but as far as mechanics go it drops right in. if you ask me if your gonna do all that you would be better off wiring in a wrx engine(more options and actually worth the pita wiring)
This isn't exactly true. I'm pretty confident the 06 does have AVCS but you don't need to hook that up. You won't have to worry about wiring either as both motors are phase II, so you can just toss the old intake mani on the new motor.
jamesfacts is offline   Reply With Quote
Old 09-27-2007, 05:12 PM   #4
singincanary
Will mod for Guinness
Moderator
 
Member#: 77921
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: Orange County, New York
Vehicle:
'02 Foz
'07 'beca, '08 OBXT

Default

Quote:
Originally Posted by americanyouth View Post
This isn't exactly true. I'm pretty confident the 06 does have AVCS but you don't need to hook that up. You won't have to worry about wiring either as both motors are phase II, so you can just toss the old intake mani on the new motor.
Great news. Thanks a bunch.
singincanary is offline   Reply With Quote
Old 09-27-2007, 05:19 PM   #5
ALaDDiN
Scooby Specialist
 
Member#: 98294
Join Date: Oct 2005
Chapter/Region: MAIC
Location: Clarksburg, MD
Vehicle:
2004 Honda Civic
2006 Acura TL

Default

So it would just be using the old Intake Manifold, with the new heads and block (the long block)?
ALaDDiN is offline   Reply With Quote
Old 09-27-2007, 09:49 PM   #6
kwh29
Scooby Specialist
 
Member#: 22100
Join Date: Jul 2002
Chapter/Region: South East
Location: Durham, NC
Default

Yes. Randy Zimmer is apparently doing this now on one of his street car beaters.

Another option is to have the old heads rebuild and use the '06 short block. As best as I've seen the short block is completely interchangable.

--Kevin H.
kwh29 is offline   Reply With Quote
Old 09-27-2007, 11:44 PM   #7
singincanary
Will mod for Guinness
Moderator
 
Member#: 77921
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: Orange County, New York
Vehicle:
'02 Foz
'07 'beca, '08 OBXT

Default

is the trany interchangeable as well, 5 speed to 5 speed?
singincanary is offline   Reply With Quote
Old 09-28-2007, 12:49 AM   #8
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by americanyouth View Post
This isn't exactly true. I'm pretty confident the 06 does have AVCS but you don't need to hook that up.
It may have AVLS or i-AVLS, but only the turbo 2.5Ls and the EZ30R have AVCS. I've never figured out what the difference was (if any) between the EZ30R's AVLS and the EJ25's i-AVLS. On the EZ30R, AVLS is basically just controlled by an on/off solenoid, so you could easily wire in an RPM switch to "turn on" the higher lift cam profile at, say, 4000rpm. I don't know if it's that easy with the EJ25's i-AVLS.

Quote:
Originally Posted by americanyouth View Post
You won't have to worry about wiring either as both motors are phase II, so you can just toss the old intake mani on the new motor.
Concur - assuming, of course, that the old manifold bolts up to the newer heads. (Edit: When I posted this initially, I was thinking the new heads had a different bolt pattern, but I think I was wrong. I think the '00 manifold will bolt up to the '06 heads without issue.)

Quote:
Originally Posted by singincanary View Post
is the trany interchangeable as well, 5 speed to 5 speed?
Should be. AFAIK Subaru 5-speeds are interchangeable all the way back through the mid-90s.

Pat Olsen

Last edited by Patrick Olsen; 09-28-2007 at 01:05 AM.
Patrick Olsen is offline   Reply With Quote
Old 09-28-2007, 01:36 AM   #9
ovedrivex
*** Banned ***
 
Member#: 116774
Join Date: Jun 2006
Chapter/Region: TXIC
Location: Tropioca.com
Vehicle:
1997 Project GC8

Default

well if all hes really doing is changing blocks and heads/possible just rebuild. would it be better to buy a new ej257block and just rebuild the heads?
ovedrivex is offline   Reply With Quote
Old 09-28-2007, 11:23 AM   #10
jey
Scooby Specialist
 
Member#: 32503
Join Date: Feb 2003
Chapter/Region: TXIC
Location: Johnson City, TX
Vehicle:
2011 Tribeca
1995 Legacy Wagon

Default

Quote:
Originally Posted by ovedrivex View Post
well if all hes really doing is changing blocks and heads/possible just rebuild. would it be better to buy a new ej257block and just rebuild the heads?
Only if he's planning to use forced induction. The EJ257 is the STi block with a low compression ratio. EJ251 or something is what you're looking for in an NA application.
jey is offline   Reply With Quote
Old 09-28-2007, 12:19 PM   #11
singincanary
Will mod for Guinness
Moderator
 
Member#: 77921
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: Orange County, New York
Vehicle:
'02 Foz
'07 'beca, '08 OBXT

Default

Planning on swapping an '06 n/a into my '00 n/a. found a good deal on a low milage '06 engine and want to replace my aging (200k) engine.
singincanary is offline   Reply With Quote
Old 09-28-2007, 02:34 PM   #12
Jaxx
NASIOC Supporter
 
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

does the 05+ na 2.5 have high density crank and cam

if thats the case then no just swapping the manifold won't work at all
Jaxx is offline   Reply With Quote
Old 10-01-2007, 09:53 AM   #13
singincanary
Will mod for Guinness
Moderator
 
Member#: 77921
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: Orange County, New York
Vehicle:
'02 Foz
'07 'beca, '08 OBXT

Default

Quote:
Originally Posted by Jaxx View Post
does the 05+ na 2.5 have high density crank and cam

if thats the case then no just swapping the manifold won't work at all
I have no idea. Anyone else know?
singincanary is offline   Reply With Quote
Old 10-01-2007, 09:47 PM   #14
neko
Scooby Specialist
 
Member#: 46500
Join Date: Oct 2003
Location: Idaho
Vehicle:
In Subaru
Time-Out

Default

not sure about the 06 motor, but i know my son's mother's '00 RS has a '03 2.5L in it and runs great. doesn't look like they hacked any wires at all. just the new motor, trans, and ecu from the 03.

The 2 major external differences i know of in the engine bay are the A/C (need to bolt the older compressor onto the newer block), and the PS pump setup needs to be the older one too. ALT doesn't matter i don't think.
neko 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
2.5i - Borla headers - 2.5rs Catpipe - Catless midpipe - stromung Axleback Un0RiGiNaL Engine/Power/Exhaust 14 01-27-2010 02:03 PM
FS: Ingalls camber bolts and '00 2.5rs rear seats Cyclops NWIC Private Classifieds 24 04-30-2009 03:01 PM
2005 2.5RS or 2006 2.5i or 2006 2.5 wagon Prelude Canada Region Forum 16 09-21-2005 04:10 PM
'02 2.5RS TRANNY into '00 2.5RS?????? 4WDRFT 74 Transmission (AT/MT) & Driveline 1 09-26-2004 11:25 PM


All times are GMT -4. The time now is 04:53 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.