Welcome to the North American Subaru Impreza Owners Club Saturday July 12, 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 04-15-2005, 04:21 PM   #1
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default 2.5 RS / WRX swap

I was thinking about building up a 2.5RS block to put in my Subaru. The RS Block is dirt cheap and I would have it bored to about 2.6-2.7L and cast iron sleeves put in.

With nice new forged internals would this block be stronger and more reliable then a STi EJ257 block?

Also what else would I need for this to all come together?

Has anyone do anything like and can point me in the right direction?

Still in the thinking this through stage and need so ideas from people who have done this stuff before.

P.S. I have been searching and it seems like the head will be holding me back. Iím not worried about that now because I would run the stock tranny until funds allowed me to upgrade that and the power.
* Registered users of the site do not see these ads.

Last edited by line; 04-15-2005 at 04:28 PM.
line is offline   Reply With Quote
Old 04-18-2005, 09:16 AM   #2
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

ouch nothing the hole weekend. New week so to the top.
line is offline   Reply With Quote
Old 04-18-2005, 09:48 AM   #3
kheff46
Scooby Specialist
 
Member#: 66739
Join Date: Jul 2004
Chapter/Region: MWSOC
Location: Medina, Ohio
Vehicle:
2002 WRX wagon
silver

Default

the sti block is stronger initially(stock). with better sleeves and more displacement on NA 2.5, they might hold similar power levels(not 100% sure). but there's more money to spend just to make it dependable(bearings, pistons, rods, wrist pins, gaskets, etc.). sti block is the way to go for instant relaibility. 400whp seems like a safe number to shoot for with sti 2.5 block(stock). save some cash and opt for the sti. you'll have less problems finding aftermarket accessories in the years to come. hope this helps!
kheff46 is offline   Reply With Quote
Old 04-18-2005, 01:37 PM   #4
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

I started thinking that this weekend but was hoping to see some other peoples input. If you have an idea on this let me know
line is offline   Reply With Quote
Old 04-18-2005, 01:57 PM   #5
dentprone
Scooby Newbie
 
Member#: 18588
Join Date: May 2002
Location: philadelphia
Vehicle:
1999 busted car
silverthorn

Default

axis racing...crawford racing... junauto.....cobb tuning.........esxmotorsports...xceleration......t hese are a few of the companies that have been there and done that, in terms of building up 2.5 engines..its expensive and only worth it if your in need of serious hp/torque #'s
dentprone is offline   Reply With Quote
Old 04-18-2005, 05:47 PM   #6
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

does anyone have experiance with sleeved blocks? If so how much will it help?

I know that Axis, Cobb and Crawford make great blocks that can take tons of power and torque but they cost a large chunk of change. Im looking for a 2.6L engine for the least amount of money possible that is as strong as a EJ257 short block.

Again im just looking into an idea i had and didnt find anyone doing anything similar. If anyone can suggest another route to meet my goals then im more then willing to listen(dont forget im not made of money)
line is offline   Reply With Quote
Old 04-19-2005, 02:11 PM   #7
jey
Scooby Specialist
 
Member#: 32503
Join Date: Feb 2003
Chapter/Region: TXIC
Location: Johnson City, TX
Vehicle:
2011 Tribeca
1995 Legacy Wagon

Default

A brand new STi shortblock is about $1350 from the dealer - can one build up a block for significantly less than that?
jey 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
99 2.5 RS engine swap with 02 WRX..Need Wiring harness Shawn Linne Subaru Conversions 3 09-24-2006 10:10 PM
2.5 RS T or 2.5 RS Sti swap V3rdug0 Newbies & FAQs 3 03-09-2006 02:44 PM
2.5 RS engine swap with EJ22T loafmaster Subaru Conversions 5 02-04-2004 08:18 AM
2.5 RS Engine swap funkadellic69 Normally Aspirated Powertrain 9 10-11-2002 01:14 AM


All times are GMT -4. The time now is 03:57 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.