Welcome to the North American Subaru Impreza Owners Club Friday July 11, 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 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 06-14-2012, 10:56 PM   #1
ScootSpecs
Scooby Newbie
 
Member#: 256739
Join Date: Sep 2010
Chapter/Region: TXIC
Location: SA, TX
Vehicle:
1997 GM4 Impreza
Acadia Green

Impreza GC8 97 Brighton ------ N/A Build, EG33 H6?

Hey folks,
I'd like to start this thread to keep track of this project and its progress. I'm starting out with a '97 Subaru Impreza Brighton edition, 2.2L 4EAT Auto. My overall goal is to get more street worthy power without breaking the bank, while keeping things reliable and close to stock. So to do that I'm going to go the route of using a 2.5 sourced short block with my existing 2.2 heads, with some tasteful add-on's as I go.

So far I've gathered some useful info here:
http://forums.nasioc.com/forums/showthread.php?t=631527
and
http://www.i-club.com/forums/convers...-thread-65143/

And concluded that the 97+ Phase 1 EJ25D is going to be my best starting point for its more reasonable CR with the 2.2 heads. Gonna start scouring for this beast and log my progress as things come together. Any advice as I go is appreciated.

cheers
* Registered users of the site do not see these ads.

Last edited by ScootSpecs; 06-18-2012 at 06:50 PM.
ScootSpecs is offline   Reply With Quote
Old 06-14-2012, 11:59 PM   #2
bugeyetex
Scooby Specialist
 
Member#: 283815
Join Date: May 2011
Chapter/Region: TXIC
Location: San Antonio
Vehicle:
2003 psm wrx wagon
Built Fuji Tough

Default

H6 FTW!!!

Seriously though, just keep going through posts and using the search function. Don't be afraid to pm others that have gone through this before, you aren't the first. GLWB
bugeyetex is offline   Reply With Quote
Old 06-15-2012, 09:52 PM   #3
ballitch
Scooby Specialist
 
Member#: 74907
Join Date: Nov 2004
Chapter/Region: NWIC
Location: salem, OR
Vehicle:
98 cam'd EJ251
Wrx Tranny,slowr than ish

Default

I will give you my advice based on experience, don't make this motor. I made it, and loved it, but you will grow tired of it. Instead, swap in the complete EJ25D and call it a day.

For that swap all you have to do is swap the EJ22 intake manifold wiring harness over to the EJ25D IM and make sure you have a dual port exhaust header. That's it, literally.

Over 4-4.5k rpm's, the high compression frankenstein falls on it's face, hard, I had cams AND obx headers.....

Like I said, I really enjoyed it, but it left something to be desired. My low compression EJ22 block/sohc EJ25 head motor with delta 2k grinds felt faster than that motor. Maybe my butt dyno needs to be re-calibrated, I don't know.

I would hate for you to do this, and feel like you should have done something different with your hard earned money.


~Josh~

EDIT: What am I saying......swap the sohc EJ25 in there if you have a throttle body IAC valve

Last edited by ballitch; 06-15-2012 at 09:55 PM. Reason: tard moment......
ballitch is offline   Reply With Quote
Old 06-17-2012, 06:32 PM   #4
cal_look_zero
Scooby Specialist
 
Member#: 294461
Join Date: Sep 2011
Chapter/Region: NWIC
Location: Grass Pants, OR
Vehicle:
1997 Outback Sport
378hp/364tq

Default

My Ej25D block/single port 2.2 head franky pulls hard to the fuel cut at 6k...

I'm running 200 cams, intake spacers, 280cc injectors, oversized valves, header, hybrid intake.

If anything, I'd advise against the 25d. I learned after I had built it, that the block is notorious for blowing rod bearings. I have an oil pressure gauge and monitor it, so I should have no issues, but it's still in the back of my mind. You can build off a 251 block and still use the 25d pistons to keep the CR down around 11, but the 251 pistons only bump it to 11.4 or so.
cal_look_zero is offline   Reply With Quote
Old 06-18-2012, 06:27 PM   #5
ScootSpecs
Scooby Newbie
 
Member#: 256739
Join Date: Sep 2010
Chapter/Region: TXIC
Location: SA, TX
Vehicle:
1997 GM4 Impreza
Acadia Green

Default

well after searching for a 25d with no local results I think I'm gonna pass on the frankenstein setup.

Instead I'm now considering:

1. H6, figure if im gonna do it might as well go all out haha only thing is I have no idea what I can use or what to look for.

OR

2. Newer full phase2 sohc ej25, with wiring conversion and whatever else I need.

"swap the sohc EJ25 in there if you have a throttle body IAC valve"

how can I tell if I have one othese? mine is a 97
ScootSpecs is offline   Reply With Quote
Old 06-18-2012, 06:49 PM   #6
ScootSpecs
Scooby Newbie
 
Member#: 256739
Join Date: Sep 2010
Chapter/Region: TXIC
Location: SA, TX
Vehicle:
1997 GM4 Impreza
Acadia Green

Default

SO

just found a local EG33 from a 92 SVX LSL with 91k miles, looks promising gonna call tomorrow

would my current auto 4EAT handle the power?
and what else would I need to do this swap, parts wise?
ScootSpecs 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
2.5/2.0 L hybrid build WRX + VF 39 makes 272HP/296TQ krambte79 Proven Power Bragging 11 03-02-2012 12:07 PM
2.0 to 2.5 hybrid build question mvcsk8r Built Motor Discussion 1 07-01-2008 08:47 AM
2.5 Hybrid Build **progress** Twiztidunreal Texas Impreza Club Forum -- TXIC 24 07-08-2007 04:00 PM
My 2.5 hybrid build quikie Built Motor Discussion 9 07-04-2007 09:40 PM
Looking for help with 2.5 hybrid build in East TN. kinada423 South East Region Forum 2 10-06-2006 11:55 PM


All times are GMT -4. The time now is 03:12 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.