Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 12-12-2005, 05:19 PM   #1
riggs
Scooby Newbie
 
Member#: 85389
Join Date: Apr 2005
Default 06 WRX and STI appears to have same internals....

Dont shoot the messenger, but I have heard now from two different reputable Subaru tuners that the bottom end internals on the two 2006 model cars are identical...

The Subaru dealership here in Clarksville, TN is willing to do a comparison by ordering (1) rod, piston, and cam off each the 06 STI and the 06 WRX....This should solve the debate once and for all....

So far we know the part #'s are different, but the prices are the exact same for the rods,pistons, and cams off the WRX and STI...

I'd like to believe they are the same, but I'd like to see the parts in person and weigh them, etc before I buy the story 100%...
* Registered users of the site do not see these ads.

Last edited by riggs; 12-12-2005 at 05:35 PM.
riggs is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-12-2005, 05:57 PM   #2
Starkiller
Scooby Specialist
 
Member#: 82741
Join Date: Mar 2005
Chapter/Region: NESIC
Location: Bristol, CT
Vehicle:
2007 350Z Silver

Default

If there different part numbers, then there different parts.
And yes, I would like to believe that there the same too.
Starkiller is offline   Reply With Quote
Old 12-12-2005, 09:26 PM   #3
kn0bby8
Scooby Specialist
 
Member#: 97644
Join Date: Oct 2005
Chapter/Region: Tri-State
Location: Back In NY
Vehicle:
2006 WRX
Black

Default

Quote:
Originally Posted by riggs
Dont shoot the messenger, but I have heard now from two different reputable Subaru tuners that the bottom end internals on the two 2006 model cars are identical...

The Subaru dealership here in Clarksville, TN is willing to do a comparison by ordering (1) rod, piston, and cam off each the 06 STI and the 06 WRX....This should solve the debate once and for all....

So far we know the part #'s are different, but the prices are the exact same for the rods,pistons, and cams off the WRX and STI...

I'd like to believe they are the same, but I'd like to see the parts in person and weigh them, etc before I buy the story 100%...
So when are the internals being ordered? Like to hear more about the comparison results!
kn0bby8 is offline   Reply With Quote
Old 12-12-2005, 09:36 PM   #4
Davenow
Scooby Guru
 
Member#: 23676
Join Date: Aug 2002
Chapter/Region: NESIC
Location: de_dust and Orgrimar
Vehicle:
.

Default

Quote:
Originally Posted by Starkiller
If there different part numbers, then there different parts.
.
Not always true. I have seen a TON of cases where 3-4 different part numbers gets you the same exact part.

That said I am fairly sure the rods and pistons are different.
Davenow is offline   Reply With Quote
Old 12-12-2005, 09:37 PM   #5
Davenow
Scooby Guru
 
Member#: 23676
Join Date: Aug 2002
Chapter/Region: NESIC
Location: de_dust and Orgrimar
Vehicle:
.

Default

BTW, again I will say it since this is the wet dream 06 WRX owners are having


Yes your car is just like the STI, and STI owners paid more for nothing
Davenow is offline   Reply With Quote
Old 12-12-2005, 09:43 PM   #6
REX8
*** Banned ***
 
Member#: 24038
Join Date: Sep 2002
Chapter/Region: South East
Location: Godspeed Cale...
Default

Quote:
Originally Posted by Starkiller
If there different part numbers, then there different parts.
And yes, I would like to believe that there the same too.
Yaa....no...
REX8 is offline   Reply With Quote
Old 12-12-2005, 09:47 PM   #7
SilverSurfer04STi
Scooby Specialist
 
Member#: 71542
Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Midwest
Vehicle:
2013 WRB BRZ

Default

Quote:
Originally Posted by Davenow
BTW, again I will say it since this is the wet dream 06 WRX owners are having


Yes your car is just like the STI, and STI owners paid more for nothing
If I owned an 06 WRX I would like to believe that too...

Even if the internals are identical (I'm skeptical just like the others) I'm curious, are the heads the same or different? Seems as though they would be different too, but I'm just speculating, no proof whatsoever. In the past I thought it went like this: EJ205 heads < EJ257 heads < EJ207 heads. Does the new WRX have FXT heads and if so, do they flow less than the EJ257 heads? What about the cams?

EDIT: Nevermind about cams, just reread original post. Thought you were just talking about rods and pistons, but I guess I read wrong.

Last edited by SilverSurfer04STi; 12-12-2005 at 09:55 PM.
SilverSurfer04STi is offline   Reply With Quote
Old 12-12-2005, 10:03 PM   #8
ShaggyGT
*** Banned ***
 
Member#: 19221
Join Date: May 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2005 Legacy GT (STi)
UR35R/Rotated Intake Mani

Default

Seen them side by side. The internals and heads are definitely different. The WRX's have a fitting on the heads for the air pump system as well. This was on a 2006 WRX TR.

-Matt
ShaggyGT is offline   Reply With Quote
Old 12-12-2005, 10:35 PM   #9
cubuff
Scooby Specialist
 
Member#: 38345
Join Date: Jun 2003
Location: Littleton, CO
Vehicle:
2004 WRB WRX

Default

I know the port sizes on the wrx heads and the sti heads are the same. They are small port, ver7 & ver8 heads are large port. The only thing different in the heads from STi to WRX is cams,springs etc.. and AVCS plugs. This comes from a Tech that has had the port sizes measured and compared.
cubuff is offline   Reply With Quote
Old 12-12-2005, 11:08 PM   #10
nimblegimbal
Scooby Specialist
 
Member#: 91120
Join Date: Jul 2005
Chapter/Region: Tri-State
Location: my mothers anus
Vehicle:
06 WRX ImpWag
Batmobile Black

Default

This has already been covered, but some retarded moderator moved it to the newbies forum, like a dumb newbie.

It is the same shortblock except the pistons, which are only a different dish, otherwise the same. So essentially, you can call it the same shortblock. Quirt Crawford also confirmed this, but I can't find that thread *found*
Quote:
Originally Posted by Crawford Performance
The 2006 WRX short block is the same as the STI, except for the pistons. And the pistons in the WRX are the same as the STI, except for the extra 2cc of dish volume

Quirt Crawford
www.crawfordperformance.com
http://forums.nasioc.com/forums/showthread.php?t=893731


Are you sure about the cams cubuff? In the last thread, a tech was saying the cams from both cars have the same part numbers...

*looks for the old threads*
http://forums.nasioc.com/forums/show...6&page=1&pp=25
http://forums.nasioc.com/forums/show...7&page=4&pp=25
Quote:
Originally Posted by Scooby South
OK...I will clarify some things for you guys...

When the TR came out...Our parts list was updated...At the time..there were no Differences in part #'s for the block, Cams, Heads,Rings, Crank, Pistons, Bearings, Valves or Rods....that was in Aug of this year...as I personally looked them up..
Eng Code 257=STi
Eng Code 255=WRX

Since that time..I have gotten 2 updates on my Parts system..
When Phil and I looked at the parts again on Tues...some changes had occured...
Eng Code 257 had a different part # for the following
Short block, Heads, and Pistons...
Eng Code 255 had a different part # for the following
Short block, heads, and Pistons...

Eng code 255 and 257 had the same part #'s for the following
Cams, Valves, Bearings, rods, and the Crank

so they are different part #'s...sometimes that doesn't mean different...but in this case I think they are...

This goes even further back to my District Rep and regional Rep telling me they were going to be the same essentially except the Turbo, Intercooler and the ECU...otherwise ...same same...This was back in July...

Hopefully this info will help some of you guys out......and for the record...Someone has to push the envelope..To bad it was our turn in the bucket...but the info we are learning...is helping Tuners, Builders, and you the customer....

Bill
Parts Manager
Subaru of Jacksonville
Davenow also thought the 06 had the same injectors as the sti so I take that with a grain of salt... and fwiw, anybody with a lick of sense knows their wrx isn't an sti, and never will be without a few grand, not sure where you get the impression that everyone thinks otherwise from... talking about engine internals != "omg its the same car but cheaper, anyone who buys an sti got ripped off and sux woot woot".

Last edited by nimblegimbal; 12-12-2005 at 11:33 PM.
nimblegimbal is offline   Reply With Quote
Old 12-12-2005, 11:21 PM   #11
e30
Scooby Newbie
 
Member#: 89211
Join Date: Jun 2005
Vehicle:
04 FXT
Axles of Evil on Crusade

Default

Yes we did this last week ,....
I thought it was all done.
I know we did this .

I vote all 2006 wrx people must post in the noob forum for 1 yr.
unless you had a wrx before and just got a 06 .
something must be done it's attack of the noobs we went through this last week .
e30 is offline   Reply With Quote
Old 12-13-2005, 12:58 AM   #12
Division By Zero
Scooby Specialist
 
Member#: 7555
Join Date: Jun 2001
Chapter/Region: South East
Location: Charlotte NC
Default

Quote:
Originally Posted by Davenow
BTW, again I will say it since this is the wet dream 06 WRX owners are having


Yes your car is just like the STI, and STI owners paid more for nothing
That's a gay comment sorry to say (but I can see where you're coming from on that). Anyway, why would you think that they would change the rods but give it the same crank and block? Makes no sense to me. I think it's just the pistons for the EVAP system and CR diffs. Otherwise the same. I don't know much about the heads other than they've got AVCS too. Other than that, I think the WRX is a hella bargain compared to the 02-05.
Division By Zero is offline   Reply With Quote
Old 12-13-2005, 01:03 AM   #13
02Toyowrx
Scooby Newbie
 
Member#: 56520
Join Date: Mar 2004
Vehicle:
2002 WRX
White

Default

If I had the choice I would take the STI chassis and use the 06 wrx engine.
The heads have a nicer combustion chamber (the ports are the same)
Obviously get rid of the dinky wrx turbo that quickly is out of breath.
And now since the AP has the function to get rid of the air injection I dont see a downside.
02Toyowrx is offline   Reply With Quote
Old 12-13-2005, 02:44 AM   #14
silentbob343
Scooby Specialist
 
Member#: 57307
Join Date: Mar 2004
Default

is the 255 open ore semi-closed deck?
silentbob343 is offline   Reply With Quote
Old 12-13-2005, 02:48 AM   #15
jay25RS
Scooby Specialist
 
Member#: 4273
Join Date: Feb 2001
Chapter/Region: NESIC
Location: CT
Vehicle:
2015 Taco
& 2015 Legacy Ltd.

Default

Quote:
Originally Posted by silentbob343
is the 255 open ore semi-closed deck?
I've read in multiple places from several resepcted forum members that all 2.5 liter Subaru engines are semi-closed.

-Jason
jay25RS is offline   Reply With Quote
Old 12-13-2005, 04:37 AM   #16
EnterTheDragon
Scooby Guru
 
Member#: 6511
Join Date: May 2001
Chapter/Region: NWIC
Location: West of the Atlantic
Default

Quote:
Originally Posted by e30
Yes we did this last week ,....
I thought it was all done.
I know we did this .

I vote all 2006 wrx people must post in the noob forum for 1 yr.
unless you had a wrx before and just got a 06 .
something must be done it's attack of the noobs we went through this last week .
those n00bs are shivering over your 5 month seniority
EnterTheDragon is offline   Reply With Quote
Old 12-13-2005, 04:51 AM   #17
SilverSurfer04STi
Scooby Specialist
 
Member#: 71542
Join Date: Sep 2004
Chapter/Region: MWSOC
Location: Midwest
Vehicle:
2013 WRB BRZ

Default

^^^^^^^
SilverSurfer04STi is offline   Reply With Quote
Old 12-13-2005, 09:50 AM   #18
sizzflair
Scooby Specialist
 
Member#: 94268
Join Date: Aug 2005
Chapter/Region: TXIC
Location: Nolanville, TX
Vehicle:
1995 JDM STi RA ver2
2010 Exige S240

Default

since i have an 06 sti...


no.. wrx is diff than sti

hehe
sizzflair is offline   Reply With Quote
Old 12-13-2005, 10:08 AM   #19
Jitenshakun
Scooby Specialist
 
Member#: 61586
Join Date: May 2004
Chapter/Region: W. Canada
Location: Alberta
Vehicle:
2005 STi
WI and all the goodies

Default

WRX > STi, STi > WRX, STi = WRX

Why can't we all just get along and get back to slamming Evos?

I'm sure the exact same "discussions" are had by Z28 SS and Corvette owners. I'm equally sure the main reason behind being a Z28 SS owner and a Corvette owner is the same as it is here; $$$

[\flame suit on\]

-J
Jitenshakun is offline   Reply With Quote
Old 12-13-2005, 10:43 AM   #20
timmah
Scooby Specialist
 
Member#: 54203
Join Date: Feb 2004
Chapter/Region: NESIC
Location: Albany, NY
Default

Quote:
Originally Posted by Jitenshakun
WRX > STi, STi > WRX, STi = WRX

Why can't we all just get along and get back to slamming Evos?

I'm sure the exact same "discussions" are had by Z28 SS and Corvette owners. I'm equally sure the main reason behind being a Z28 SS owner and a Corvette owner is the same as it is here; $$$

[\flame suit on\]

-J
you are right, but it will always happen.....
timmah is offline   Reply With Quote
Old 12-13-2005, 11:52 AM   #21
e30
Scooby Newbie
 
Member#: 89211
Join Date: Jun 2005
Vehicle:
04 FXT
Axles of Evil on Crusade

Default

You forgot the 04-05 fxt = teh win

1. fxt lighter than sti
2. fxt =sti long block
3. fxt 4.44 better than wrx/sti 3.9/3.70
4. fxt better Insurance rate
5. fxt under the radar!
6. fxt can carry tool box,cooler, chair and a set of slicks to the track.
7. fxt will smoke a 06 wrx
8. fxt will smoke 02 ap wrx tdo4
9. fxt+sti ecu,turbo,ic will smoke sti! I have seen it 4.44vs 3.9 big Difference
10. fxt you can have sex with a woman laying down.= teh win.
11. fxt is faster than srt4 hehehe!
12. fxt has less driveline loss than sti because rotors,wheels and 6 speed.
13 fxt for the bakers dozen is pimp dady .

no flame suit needed skin is thick. hahaha! I just had to.
e30 is offline   Reply With Quote
Old 12-13-2005, 12:44 PM   #22
nimblegimbal
Scooby Specialist
 
Member#: 91120
Join Date: Jul 2005
Chapter/Region: Tri-State
Location: my mothers anus
Vehicle:
06 WRX ImpWag
Batmobile Black

Default

Quote:
Originally Posted by timmah
you are right, but it will always happen.....
funny, its not happening here, seems like a simple technical discussion of the motors... nobody is preaching superiority
nimblegimbal is offline   Reply With Quote
Old 12-13-2005, 01:17 PM   #23
Timdog1650
Scooby Specialist
 
Member#: 45516
Join Date: Oct 2003
Chapter/Region: MAIC
Location: Norfolk/Virginia Beach, VA
Vehicle:
MY04 STi
Black

Default

Quote:
Originally Posted by e30
10. fxt you can have sex with a woman laying down.= teh win.

I think you just wrote Subaru's new marketing campaign....
Timdog1650 is offline   Reply With Quote
Old 12-13-2005, 01:22 PM   #24
Jitenshakun
Scooby Specialist
 
Member#: 61586
Join Date: May 2004
Chapter/Region: W. Canada
Location: Alberta
Vehicle:
2005 STi
WI and all the goodies

Default

Quote:
Originally Posted by nimblegimbal
funny, its not happening here, seems like a simple technical discussion of the motors... nobody is preaching superiority
You have to read between the lines.

IMO, since the WRX went 2.5L there has been a lot of

WRX_Owner "My car is just like a STi because it has a 2.5L and..."

STi_Owner "Your WRX can't be as good as my STi because..."

my 2 cents

-J
Jitenshakun is offline   Reply With Quote
Old 12-13-2005, 01:54 PM   #25
racingfish
Scooby Guru
 
Member#: 60976
Join Date: May 2004
Chapter/Region: SWIC
Location: Goodyear
Vehicle:
1969 LGT
FATURBO

Default

hhahaha its been my expericance to sell most of my foresters to gays and lesbians... and you know theres nothing wrong with that...

we all know that SoA has greatly held back on their hp rating for the 2006 wrx. if anything they should be rating it near 250-260hp. but if they did it would kill the market for their sti. who would bay 10-15k more for 40-50hp more??? i think its smart for subaru to do it marketing wise. and its weird because Subaru sends our dealership 90% TR models. ive worked at my dealership for 2 1/2 months and we havent recieved 1 regular wrx sedan. weird huh
racingfish 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
FS: PA 06 WRX Struts, Springs, 05 STi Springs, 06 WRX and STi Exhaus dan1587wrx Tri-State Area Private Classifieds 17 04-09-2009 07:02 PM
wrx and sti rear sway bars same? Mojambo Brakes, Steering & Suspension 5 11-12-2006 11:40 AM
Are 06 WRX and STi tail lights the same? R0DENT Interior & Exterior Modification 1 07-28-2006 04:43 PM
Are Wrx and Sti head lights the same except the HID? everglow Electrical & Lighting 2 03-03-2006 10:33 AM
WRX and STI O2 sensor the same? hatchy STi Forum Archive 0 07-21-2003 02:43 AM

All times are GMT -4. The time now is 09:07 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.