Welcome to the North American Subaru Impreza Owners Club Tuesday January 16, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
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. 
Thread Tools Display Modes
Old 09-06-2008, 10:44 PM   #1
Scooby Newbie
Member#: 78892
Join Date: Jan 2005
Default RS SOHC and 06 WRX Short block

I seized my 01 2.5 rs block and was wondering if I use the new 06 WRX 2.5 block as a replacement do I need to do add any wires? Kinda hoping that i can just slap that block in to my heads and try and use the current exhaust.

I dont think that vvt would have any difference as im using 01 sohc.

I am not trying to turbo the block im just trying to get the thing back up and running and its cheaper for me to get the 06 short block then it is tryin g to find an ej25

if any one knows let me know

* Registered users of the site do not see these ads.
neogold is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 09-06-2008, 11:10 PM   #2
Scooby Specialist
Member#: 166898
Join Date: Dec 2007
Chapter/Region: W. Canada
Location: Canada
1994 T leg SS


Dont know why you think a Turbo block would be cheaper it will make less power for you and cost more and be more of a headache, Find an EJ25 block or full moter it will be alot cheaper, Maybe this is a sign from god telling you to turbo your car!
parkes is offline   Reply With Quote
Old 09-06-2008, 11:29 PM   #3
Scooby Newbie
Member#: 78892
Join Date: Jan 2005

All these builders must be in Canada. I got one telling me do it and the other sayings no dice.


link 25rs thread ive started over there.

Im getting the 06 wrx block for 150$ so im not sure how much cheaper it can get.
neogold is offline   Reply With Quote
Old 09-06-2008, 11:49 PM   #4
Matt Monson
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
99 2.5RS, '85 911
'73 914 and 2012 BRZ


You can do it, but as was suggest over on 25rs, your compression would drop a bunch. The only way I would do it would be if I planned to turbo it later. And contrary to what you say over there, you can definitely turbo charge with the Ej25 NA heads. Do a search for Wedge, Xephyr, and Graham just for starters. All three of them drive old RS's with 300-400whp and SOHC Ej25 heads.

But if it's just about getting your car back on the road, it will work. Just don't expect more than 150chp out of it.
Matt Monson is offline   Reply With Quote
Old 09-07-2008, 12:00 AM   #5
Scooby Specialist
Member#: 119995
Join Date: Jul 2006
Chapter/Region: W. Canada
Location: Canadia
2004 Outback XT


I wouldn't turbo it unless you are willing to spend the money to have it done properly. You could probably get 9.3:1 compression forged pistons and turbo it down the road when you have more money to play with. That way you don't lose as much power/fuel economy and you're still in the "safe" range to handle a decent amount of boost. There are a few built motor guys out there running compression ratios around there so you could look them up and ask a few questions.
silentt is offline   Reply With Quote
Old 09-07-2008, 12:11 AM   #6
Scooby Newbie
Member#: 78892
Join Date: Jan 2005

neogold is offline   Reply With Quote

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
Parting out 02 EJ25 SOHC engine (not quite short block/not quite long block) mikebontoft Engine/Power/Exhaust 1 03-16-2010 04:32 PM
04-06 STI short block= 08 STI short block stitchbad Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 14 01-22-2010 12:21 PM
fs: 06 wrx short block LateGc8 Engine/Power/Exhaust 1 03-28-2009 01:41 PM
hybrid w/ 06 wrx short block AWDWRXLOVER Built Motor Discussion 8 09-23-2007 05:09 PM
Is there a difference between a JDM and USDM WRX short block? Arnie Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 0 01-22-2004 08:04 PM

All times are GMT -4. The time now is 03:56 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.