Welcome to the North American Subaru Impreza Owners Club Friday August 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 04-12-2012, 11:22 PM   #1
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

So I blew out my ej 25sohc 2nd gen from my 03 legacy waggon. I have every thing to convert to rally waggon but need t as asap daily runner so I grabed a 07 ej253 sohc w/complete harness, but that eng has var cam timing, so am I facing a complete harness change over or just intake ? Either or what to come of old trans harness? Need help asap!!!!!
* Registered users of the site do not see these ads.
boosted03subie is offline   Reply With Quote
Old 04-13-2012, 07:25 AM   #2
slow03
Scooby Specialist
 
Member#: 93625
Join Date: Aug 2005
Chapter/Region: MAIC
Location: Odenton, MD
Vehicle:
2002 Outback H6
'12 Fiesta hatch

Default

Just run the longblock with your original manifold, and leave the avls disconnected. I run this setup in my '03 Baja. I had no problems.
slow03 is offline   Reply With Quote
Old 04-13-2012, 10:14 PM   #3
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

So I don't need to swap out the harness at all? Does anybody else have more input?
boosted03subie is offline   Reply With Quote
Old 04-13-2012, 11:10 PM   #4
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by boosted03subie
So I blew out my ej 25sohc 2nd gen from my 03 legacy waggon. I have every thing to convert to rally waggon but need t as asap daily runner so I grabed a 07 ej253 sohc w/complete harness, but that eng has var cam timing, so am I facing a complete harness change over or just intake ? Either or what to come of old trans harness? Need help asap!!!!!
Will it run and anyone know a good avcs info thread?
boosted03subie is offline   Reply With Quote
Old 04-16-2012, 02:05 AM   #5
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

Swap longblock in, fasten stock intake manifold to 253 longblock, good to go.


~Josh~
ballitch is offline   Reply With Quote
Old 04-19-2012, 08:32 PM   #6
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by ballitch
Swap longblock in, fasten stock intake manifold to 253 longblock, good to go.

~Josh~
Well eng is in, had to swap cam sprakets to meet time, left acvs un plugged, and their is an extra vacume tube left that does not have a hookup. At first we put ej253 in car and just swaped intakes. Eng would turn but no fire!!! Timing was off!!! Could not get time with out swapping sprakets!!! ( makes no sense right) after that eng fired but wants to bog stall! Also the trans is stuck in third, no matter what gear is selected, and amber "at oil temp" light flashes! nightmare! So now im thinking i need to swap heads and sprakets! Still dont know why trans wont shift! Starts in 1st and at appx 5-10 mph@ 1500rpm stumbles through 2nd to 3rd and stays! Coming to stop it jams into 1st making car jump forward as if some one hit you!
boosted03subie is offline   Reply With Quote
Old 04-19-2012, 08:39 PM   #7
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by ballitch
Swap longblock in, fasten stock intake manifold to 253 longblock, good to go.

~Josh~
Ej 253 is in but runs verry rough! At first we just onley swapped intakes and left avcs unplugged. Rolled over but no fire, turns out timming was not right so we compared part to part and swapped cam sprakets! (no sense right) engine fired right away but wants to stall! Also, trans is stuck in third and amber " AT oil temp" light flashes! Im lost for words now! So now im thinking i need to swap heads too!!
boosted03subie is offline   Reply With Quote
Old 04-19-2012, 09:12 PM   #8
slow03
Scooby Specialist
 
Member#: 93625
Join Date: Aug 2005
Chapter/Region: MAIC
Location: Odenton, MD
Vehicle:
2002 Outback H6
'12 Fiesta hatch

Default

Don't need to swap heads. I am running an EJ253 in my car without any issues. Have for over a year now. The cam sprocket needs to be changed cause your ej251 ecu needs a different signal than the 253 has. Make sure you have everything connected right, before looking at the engine. Heads work fine with avls disconnected.
slow03 is offline   Reply With Quote
Old 04-20-2012, 09:34 AM   #9
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by slow03
Don't need to swap heads. I am running an EJ253 in my car without any issues. Have for over a year now. The cam sprocket needs to be changed cause your ej251 ecu needs a different signal than the 253 has. Make sure you have everything connected right, before looking at the engine. Heads work fine with avls disconnected.
I think im going to start fresh! The guy who did the swap obviousley did not know what he was doing, the cams are probley scored from swapping sprakets! Also i found their is no plug for the oil sens behind the avcs on front left head, evedince of miss conected fuel lines, and super foamy at fluid!!! If you want something done right...do it your self! Im so pissed that he wont give me my money back and my car is in the same condition it was when we started!
boosted03subie is offline   Reply With Quote
Old 04-20-2012, 03:59 PM   #10
slow03
Scooby Specialist
 
Member#: 93625
Join Date: Aug 2005
Chapter/Region: MAIC
Location: Odenton, MD
Vehicle:
2002 Outback H6
'12 Fiesta hatch

Default

I believe the 253 has AVLS, not AVCS. Different system.
slow03 is offline   Reply With Quote
Old 04-21-2012, 12:36 PM   #11
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by slow03
I believe the 253 has AVLS, not AVCS. Different system.
Yes, I stand corrected!
boosted03subie is offline   Reply With Quote
Old 04-28-2012, 11:13 PM   #12
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

IIRC it should be this easy:

Install motor with 251 intake manifold, leave AVLS unplugged, and swap 251 cam sprockets in. I could be wrong, but I think that's the cliff notes from a thread a while ago.


~Josh~
ballitch is offline   Reply With Quote
Old 04-29-2012, 01:31 AM   #13
boosted03subie
Scooby Newbie
 
Member#: 298710
Join Date: Oct 2011
Chapter/Region: MWSOC
Location: Grand Rapids Mi
Vehicle:
03 waggons hoooo!

Default

Quote:
Originally Posted by ballitch
IIRC it should be this easy:

Install motor with 251 intake manifold, leave AVLS unplugged, and swap 251 cam sprockets in. I could be wrong, but I think that's the cliff notes from a thread a while ago.

~Josh~
Thats what this guy did but now its stuck in third gear, idols rough, and makes a huge clunk sound when it fires up. Also the at oil temp light flashes. I have ben advised two ways to fix, 1- pull intake and heads and replace with stock heads and intake, 2- pull motor back out, swap back sprockets and intake and also swap out harness. But not sure if dash inst. pannel connectors will be same. I really dont understand the trans problem either?
boosted03subie is offline   Reply With Quote
Old 08-02-2012, 01:58 PM   #14
02darkRS
Scooby Newbie
 
Member#: 80918
Join Date: Feb 2005
Location: ohio
Vehicle:
02-7 MBP RS/i hybrid
now w/ AVLS!

Default

For search purposes:

07 2.5i into an 02 RS or any similiar swap without swapping ecu's, requires:

Original intake manifold and coolant crossover pipe. This will lead you to having to block off the egr. I've done that by going through Home Depots boxes of Plumbing caps until one fit. I've read the oil plug matched the hole left in the head, if you remove the EGR port.

You have to use your original Drivers side Cam Sprocket - whatever year matches your ecu is what you need.

I drove for over 4 yrs without the AVLS hooked up with no issues.
02darkRS is offline   Reply With Quote
Old 10-17-2012, 05:15 PM   #15
rothgile
Scooby Newbie
 
Member#: 209760
Join Date: Apr 2009
Chapter/Region: MWSOC
Location: Wichita, KS
Vehicle:
2002 Impreza 2.5RS
Silver

Default

Quote:
Originally Posted by 02darkRS View Post
For search purposes:

07 2.5i into an 02 RS or any similiar swap without swapping ecu's, requires:

Original intake manifold and coolant crossover pipe. This will lead you to having to block off the egr. I've done that by going through Home Depots boxes of Plumbing caps until one fit. I've read the oil plug matched the hole left in the head, if you remove the EGR port.

You have to use your original Drivers side Cam Sprocket - whatever year matches your ecu is what you need.

I drove for over 4 yrs without the AVLS hooked up with no issues.

I am wanting to do this exact swap. I understand what parts are needed for the swap. without ecu. Is the ecu the only other part needed to do the swap without changing the cam sprocket or intake manifold? I am wanting the 07 engine for the improvements not just to have a replacement engine. I figured you might know since your profile says now w/ AVLS.
rothgile 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
WTB : EJ 20 or Ej 25 working shortblock needed mikuchiwrx Private 'Wanted' Classifieds 0 04-05-2011 06:22 PM
ej 253 compression test procedure watchunglava Service & Maintenance 4 04-28-2009 07:19 PM
correct plug, EJ 253, SOHC, 1999 Forester tcmo Service & Maintenance 2 11-30-2007 05:21 PM
completely built 25 SOHC (what do we have here?) atech_rallyrs Normally Aspirated Powertrain 87 01-20-2007 01:08 AM
knowledge sharing: EJ 25 SOHC head ColinL Normally Aspirated Powertrain 23 12-09-2000 08:06 AM


All times are GMT -4. The time now is 07:47 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.