Welcome to the North American Subaru Impreza Owners Club Thursday July 24, 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 > Built Motor Discussion

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 09-18-2010, 03:56 PM   #1
Mayrun
Scooby Newbie
 
Member#: 189163
Join Date: Sep 2008
Vehicle:
2000 Impreza
GC8

Default Built ej207 with DOM3

Does anyone run this configuration (perhaps with cams)?
Any words of wisdom? dyno graphs?
* Registered users of the site do not see these ads.
Mayrun is offline   Reply With Quote
Old 09-18-2010, 04:23 PM   #2
801_STi
Scooby Specialist
 
Member#: 200756
Join Date: Jan 2009
Chapter/Region: RMIC
Location: UT
Vehicle:
07 yellow clearbra
swp sti "Pearl"

Default

its a great streetable turbo. 11s on e85.. 350-400 wheel (with supporting mods)

but. i regret it because for the price i paid 1700 for that turbo, i couldve but a 900-1200 dollar 3586 turbo gone rotated and made a bunch more power.

guess it comes down to what you want to do with it, as i am a dragster type guy
801_STi is offline   Reply With Quote
Old 09-29-2010, 07:12 PM   #3
02Bugeyeworks
Scooby Newbie
 
Member#: 167459
Join Date: Dec 2007
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2002 WRX Wagon
WRB [Under Construction]

Default

Dom 3 XT-R is a good choice; ball bearing, billet wheel, 10cm hotside. Much less work than rotated(nobody will deny that rotated does pose its performance advantages). With stock location you retain the ability to swap the turbo out for another stock location turbo if you decide to, whereas you limit your options once you go rotated since there are many supporting mods that coincide with only the rotated setup.

It will be a bit laggy on a 2.0, but the 207 revs out plenty far to make use of the 10cm turbine and if you are using AVCS on the 207 it will help make up some torque down low. I'm sure it's doable.

I think I read that even the regular non Spec C ej207's rev to 8250 and the Spec C's rev to 8500 safely on the stock valvetrain. IIRC. Of course with cam's you could make better use of that available upper end. Cams will move power around and with a fairly large turbo on a high rev-capable motor it doesn't make much sense not to. Higher up you make torque and power the better (performance wise, not drivability wise).

I am not finished with the setup yet, but I have V.7 ej207 heads that will be mated to the ej257 I just picked up (destroked/balanced to rev past 8500!) and I'll probably run the Dom3 XT-R.

I'd like to hear how this goes if you follow through with it before I move forward with my build. Keep us updated if you're serious.
02Bugeyeworks is offline   Reply With Quote
Old 09-30-2010, 01:12 PM   #4
Thran
Scooby Guru
 
Member#: 63612
Join Date: Jun 2004
Chapter/Region: SCIC
Location: SoCal - Chino Hills
Vehicle:
2004 dom 2.5 wrx
Rally Blue

Default

i feel thou that the 10cm housing will be too big for the 2.0 or 2.1 of a ej207 it would be better mated to a 8cm housing
Thran is offline   Reply With Quote
Old 10-01-2010, 10:29 AM   #5
FuJi K
Scooby Guru
 
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
Vehicle:
MY99 GF4 JDM 6spd
NF Performance

Default

an 8cm with EWG will probably be better.
FuJi K is offline   Reply With Quote
Old 10-01-2010, 10:48 PM   #6
urabus its 40
Scooby Newbie
 
Member#: 77035
Join Date: Dec 2004
Location: OK
Vehicle:
2004 STi - Dom 3xtr
w/ wooden wheels

Default

i run the dom3 xtr on my 2.5l STi and love it. from everything i have heard and experienced, the new 10cm hotside has a drastic improvement over the 8cm. it is a really amazing turbo. Sorry i dont have built engine advice, but thought i would let you know how i feel about the turbo part. I do have dyno graphs in this thread here...
http://forums.nasioc.com/forums/show....php?t=2035484

running on GS UP w/ tial 38mm EWG and love it
urabus its 40 is offline   Reply With Quote
Old 10-02-2010, 02:11 AM   #7
Concillian
Scooby Guru
 
Member#: 4414
Join Date: Feb 2001
Location: Dublin, CA
Vehicle:
2002 WRX Sedan
Midnight Black

Default

Leslie's car is a UK EJ207 (I think small port heads, not big ports) With a stock location 3076. This is a little smaller than the DOM3 XTR, as the XTR is a 3076 billet, but I bet the hotside is close to 10cm. Probably somewhere between 8 and 10.

His Airboy chart:
http://img268.imageshack.us/img268/4715/wrxstil.jpg
Concillian is offline   Reply With Quote
Old 10-03-2010, 09:46 PM   #8
sleepersaurusrex
Scooby Newbie
 
Member#: 259120
Join Date: Sep 2010
Location: Oklahoma
Vehicle:
03 WRX
Silver

Default

The DOM 3 XTR is a GREAT turbo for stock location but that 10cm hotside is going to kill you for lag dude. I am running a blouch TD06 18G with an 8cm hot side and I don't get full boost until 4200rpm. Now granted I am on all stock internals on the 2.0 but that 10cm would be so laggy it wouldn't be fun to cruise around in. What are your goals for the car? Like hp and 1/4 mile goals?
sleepersaurusrex is offline   Reply With Quote
Old 10-04-2010, 04:36 AM   #9
Mayrun
Scooby Newbie
 
Member#: 189163
Join Date: Sep 2008
Vehicle:
2000 Impreza
GC8

Default

Thanks for all the replies, sorry for the late answer.

This is my car specs, haven't finished breaking the new engine yet, but I've ordered a DOM 3.0 XTR and a Haltech standalone ecu.

My goals are 400hp pump gas (we have 93 fuel here).
As for the spool, I imagined it'd be a bit laggy, so I'll probably opt for a equal length headers.

02Bugeyeworks - I'd love to give you an update, I guess it'll take a few months to put it all together since I still have to gather few more parts (headers, fmic, oil pressure gauge, etc...)

Last edited by Mayrun; 10-04-2010 at 03:02 PM.
Mayrun is offline   Reply With Quote
Old 10-07-2010, 07:37 AM   #10
02Bugeyeworks
Scooby Newbie
 
Member#: 167459
Join Date: Dec 2007
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2002 WRX Wagon
WRB [Under Construction]

Default

They are right about the lag with the fat hotside, I think I stated it myself, but I'm sure you expected that on a 2.0. Your saving grace is that it's an ej207 so you will have avcs to make up some torque and power higher up than any ej205 would (especially if you have the big port heads. Castings are LHS20 RHS20 or LHT20 RHT20 IIRC). The cam profiles are more agressive for top end and the entire motor will run smoothly all the way up to 8k+.
02Bugeyeworks is offline   Reply With Quote
Old 10-07-2010, 02:45 PM   #11
NITROS
Scooby Specialist
 
Member#: 41561
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
04 GT3076 2.1
Stroker = Broken 3rd

Default

I am running a perrin rotated 3076r with .63 hot side. It fits right in between a 8cm^2 and 10cm^2 hotside housing. I am making about ~350 whp on a mustang dyno with a 2.1 stroker with usdm sti cams. Full boost 4200 rpm with a 7750 rpm redline.


I also remember there is a dyno video in the PPB forum of a jdm sti ej207 with a dom 3.

Here is the thread for that.

http://forums.nasioc.com/forums/show....php?t=1867946

Last edited by NITROS; 10-07-2010 at 02:52 PM.
NITROS is offline   Reply With Quote
Old 08-02-2011, 12:10 PM   #12
Mayrun
Scooby Newbie
 
Member#: 189163
Join Date: Sep 2008
Vehicle:
2000 Impreza
GC8

Default

Just a quick update, been to the dyno and got results:

link:

http://forums.nasioc.com/forums/show....php?t=2220345
Mayrun is offline   Reply With Quote
Old 08-02-2011, 04:48 PM   #13
NITROS
Scooby Specialist
 
Member#: 41561
Join Date: Aug 2003
Chapter/Region: MWSOC
Location: Chicago
Vehicle:
04 GT3076 2.1
Stroker = Broken 3rd

Default

Nice results, now if i can only figure out why I cant make near that power on a rotated 30r?
NITROS is offline   Reply With Quote
Old 08-02-2011, 05:52 PM   #14
jura11
Scooby Newbie
 
Member#: 255146
Join Date: Aug 2010
Chapter/Region: International
Location: Ashford,UK
Vehicle:
2001 2002 WRX Wagon
WR BLUE

Default

Quote:
Originally Posted by Mayrun View Post
Just a quick update, been to the dyno and got results:

link:

http://forums.nasioc.com/forums/show....php?t=2220345
Bloody hell, that's the laggy turbo i must say.
You are running AVCS too?


Jura
jura11 is offline   Reply With Quote
Old 10-19-2011, 09:40 AM   #15
Mayrun
Scooby Newbie
 
Member#: 189163
Join Date: Sep 2008
Vehicle:
2000 Impreza
GC8

Default

Quote:
Originally Posted by jura11 View Post
Bloody hell, that's the laggy turbo i must say.
You are running AVCS too?
Jura
It's not that laggy, on the road it feels great. not running avcs but brain crower 272 cams.


Quote:
Originally Posted by NITROS View Post
Nice results, now if i can only figure out why I cant make near that power on a rotated 30r?
do you run atp's gt3076? what's the a/r?
Mayrun 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
Stick with Dom3 or go Dom3 XT-R for DD? ohm Factory 2.5L Turbo Powertrain 15 07-15-2010 10:00 PM
Sreet Tune, Dyno Results: JDM STi EJ207 Blouch Dom3, dyno video too DuCash Proven Power Bragging 46 11-01-2009 11:25 AM
the great debate built ej207 or built hybrid? waldo Built Motor Discussion 21 07-01-2009 12:12 AM
Ver8 EJ207 with Dom3 and 93 octane andrewp724 Proven Power Bragging 22 08-20-2008 09:41 PM
Ebay auction built EJ207 WRX_scott MAIC Private Classifieds 2 07-01-2006 04:08 PM


All times are GMT -4. The time now is 04:35 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.