Welcome to the North American Subaru Impreza Owners Club Thursday August 28, 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 > Pre-2002 Factory Turbo 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 03-17-2004, 04:00 AM   #1
verendia
Scooby Specialist
 
Member#: 54550
Join Date: Feb 2004
Chapter/Region: Tri-State
Vehicle:
1995 LX
graphite grey

Question ej22t block w/ ej20 head

has any 1 put the usdm wrx head with the legacy turbo block? is it better then the 2.5 rs dohc head ? some 1 please help ..thanks
* Registered users of the site do not see these ads.
verendia is offline   Reply With Quote
Old 03-17-2004, 06:42 PM   #2
MJU1983
Scooby Specialist
 
Member#: 14364
Join Date: Jan 2002
Chapter/Region: MWSOC
Location: Saint Louis, MO
Vehicle:
2003 WRX, '06 Armada
05 Vette & 05 STi (sold)

Default

You can, but the compression will be lower... ~7.4:1

We made special pistons for the blocks and WRX heads.. Bringing it up to ~8.5:1

-Mike
MJU1983 is offline   Reply With Quote
Old 03-18-2004, 06:34 PM   #3
ciper
Scooby Guru
 
Member#: 15543
Join Date: Feb 2002
Location: san francisco, ca
Vehicle:
90BJ Legacy LS ABS
AWD 946 Rio Red Jpn built

Default

http://bbs.legacycentral.org

Lots of discussion on this topic has already taken place in 3-4 long threads.
ciper is offline   Reply With Quote
Old 04-14-2004, 10:37 PM   #4
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

can you swap a ej2tt engine in with SOHC RS heads and run it on the RS ecu is my question?
benjaminetanyahoo is offline   Reply With Quote
Old 04-15-2004, 10:43 AM   #5
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Quote:
Originally posted by FutureSTIer
can you swap a ej2tt engine in with SOHC RS heads and run it on the RS ecu is my question?
This has been to subject of some debate in recent months. But Opie is currently doing it, and a few others have done it or are in process. But long term reliability is still unproven. The big issue is that some folks don't think enough of the coolant passages line up to have long term reliability...
Matt Monson is offline   Reply With Quote
Old 04-15-2004, 03:15 PM   #6
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

coolant passage lines on the short block? Or are we talking about the famous oil squirters? Please enlighten me thanks
benjaminetanyahoo is offline   Reply With Quote
Old 04-15-2004, 06:42 PM   #7
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Matt Monson is offline   Reply With Quote
Old 04-15-2004, 06:52 PM   #8
benjaminetanyahoo
*** Banned ***
 
Member#: 41300
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Midtown West (Lincoln Center)
Vehicle:
2000 New York
MTA

Default

wow pretty good stuff, so I guess a SOHC RS head doesn't really work with a ej22t shortblock, hmmm interesting
benjaminetanyahoo is offline   Reply With Quote
Old 04-17-2004, 07:06 AM   #9
totoherbs
Scooby Guru
 
Member#: 7321
Join Date: Jun 2001
Chapter/Region: NESIC
Location: waltham, ma
Vehicle:
.... 122 IggPoints
Work... ahhh... so tired.

Default

Quote:
Originally posted by Matt Monson
http://www.legacycentral.org/library/headswap.htm
coolant passages...
Good stuff...

Heres a thread with all the links to the ej22 threads on here.

http://forums.nasioc.com/forums/show...highlight=ej22
totoherbs is offline   Reply With Quote
Old 06-02-2004, 03:06 AM   #10
SJwrx
Scooby Specialist
 
Member#: 14970
Join Date: Feb 2002
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
1997 GF8
multi

Default

www.axispowerracing.net does it day in and day out

Rich
SJwrx is offline   Reply With Quote
Old 06-02-2004, 10:33 PM   #11
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Quote:
Originally posted by SJwrx
www.axispowerracing.net does it day in and day out

Rich
Um,
you are a little late to the show, like 3 months late. And the first response in this thread was Mike from Axis...
Matt Monson is offline   Reply With Quote
Old 06-02-2004, 11:58 PM   #12
subiekid
Scooby Guru
 
Member#: 25516
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Send help, stuck in internet!
Vehicle:
1995 Legacy TURBO!!!
EJ22T/TEC3 & '12 Civic

Default

i have heard that the dohc heads work better then he sohc heads, i have yet to see the heads up close.
subiekid is offline   Reply With Quote
Old 06-03-2004, 12:18 AM   #13
totoherbs
Scooby Guru
 
Member#: 7321
Join Date: Jun 2001
Chapter/Region: NESIC
Location: waltham, ma
Vehicle:
.... 122 IggPoints
Work... ahhh... so tired.

Default

Quote:
Originally posted by subiekid
i have heard that the dohc heads work better then he sohc heads, i have yet to see the heads up close.
Work better? They dont flow better... the SOHC heads out flow the DOHCs.
totoherbs is offline   Reply With Quote
Old 06-03-2004, 01:59 PM   #14
SJwrx
Scooby Specialist
 
Member#: 14970
Join Date: Feb 2002
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
1997 GF8
multi

Default

Quote:
Originally posted by Matt Monson
Um,
you are a little late to the show, like 3 months late. And the first response in this thread was Mike from Axis...
where should I send my written appology?

Rich
SJwrx is offline   Reply With Quote
Old 06-03-2004, 10:29 PM   #15
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Quote:
Originally posted by SJwrx
where should I send my written appology?

Rich
Matt Monson is offline   Reply With Quote
Old 06-20-2004, 12:13 AM   #16
WRX34
Scooby Specialist
 
Member#: 13364
Join Date: Dec 2001
Chapter/Region: MWSOC
Location: MI
Vehicle:
1996 GM8 caged,
99 V8 RSTi, 11' FXT

Default

Quote:
Originally posted by totoherbs
Work better? They dont flow better... the SOHC heads out flow the DOHCs.
Yeah but wouldn't DOHC be better for high hp turbo apps to control the timing better? I dunno. BUT I'm doing the EJ20 head swap onto a 1991 EJ22 turbo/closed deck block within the next few weeks...I'll let ya know!


WRX34
WRX34 is offline   Reply With Quote
Old 06-26-2004, 07:38 PM   #17
wrxtuner02
Scooby Specialist
 
Member#: 22700
Join Date: Aug 2002
Chapter/Region: MAIC
Location: West Virginia
Vehicle:
TRD FJ Crusier SE
76 MG Midget Special

Default

i am doing a ej20 ( wrx) head swap onto a ej22t block. tere have been a couple of things that needed to be modified to make it work. legacy oil pump is on order. i used the stock heads with the ej22t head gasket. took the butterfly valves out of the tgv housings and had to cut and weld up the top crankcase vent to let the coolent passageway fit. we havn't started it yet but i will let you know when we do.

also we noticed that with this setup the stock cast exhause manifold wouldn't go back on. the ej22t is apparently several mm taller. we had to stretch my gpmotos to get them to fit.
wrxtuner02 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
I have a EJ25 short block with EJ20 heads Crazy650 Built Motor Discussion 16 07-06-2009 11:19 PM
FS: EJ22T block, DOHC EJ25 heads deamon64 Engine/Power/Exhaust 2 04-07-2009 10:36 PM
ej25 turbo block with ej20 heads? soslow Newbies & FAQs 3 01-06-2008 08:22 PM
EJ22T block with WRX head of Built USDM WRX block Cstmboxermotorsports Built Motor Discussion 15 10-18-2006 07:02 AM
EJ22T Block on EJ20 WRX heads blaznc Subaru Conversions 1 02-08-2004 11:06 PM


All times are GMT -4. The time now is 07:54 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.