Welcome to the North American Subaru Impreza Owners Club Saturday August 30, 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 09-12-2010, 02:04 PM   #1
Donutz
Scooby Newbie
 
Member#: 148803
Join Date: May 2007
Chapter/Region: South East
Location: 42Autosports' Fridge w/ J.Earl
Vehicle:
11 WRX 4dr
96 Impreza 3.0RS (EZ30D)

Default The 42Autosports 3.0RS (EZ30D inside)

Just wanted to post up for my fellow nasioc-ers stage one of my ongoing Impreza build. The build started off as an STi swap for my 2007 2.5i but when I drove the Cannonball GTR (http://www.gtroc.us/forums/index.php...&mode=threaded) that was campaigned during the 2009 and 2010 One Lap of America, I knew I'd be shooting for a power levels that would not be reliable on a four cylinder powerplant. That is how my 3.0L Impreza came to be.

The powerplant in question is the EZ30D out of the 2001-2004 Outback L.L. Bean. The current motor is a "get the car up and running deal" it's a bit high mileage at 17XXXX miles but it still runs like a champ, putting down 175 at the wheels on a Dyno Dynamics with a full exhaust, intake and Haltech stand alone (they were rated at 212 crank from factory, and that 175 equates to about 200 at the wheels on a DynoJet or about 250 at the crank).

The reason for a slightly higher mileage motor is that the timing chain EZ30s are built like tanks and they don't suffer much from aging (not to mention it has been puttering around for the last 9 years (donor car was an 01 Outback LL Bean). Though this is only a temporary solution, we're going to acquire a core motor (once a six speed makes it way into the car of course) and build it with forged pistons and rods (the 2.0L WRX pistons will fit in the EZ30) and do a twin turbo setup, though that won't be coming to fruition for another year(ish).

Now for the pics and dyno video:

the car in question


The motor (a little dirty, it got cleaned up some before it went into the car)


The motor in the car at the Charlotte Auto Fair


The dyno video

Dyno plot


I'll continue updating this thread with new videos/status updates, the car's already been out to an autocross and did pretty well, compared to a VF52'd WRX it ran slightly quicker times (prep levels were similar, the 3.0 may have had better brakes/wider rubber) and it felt as if it had the peak torque of the 52'd car all over the rev band.
* Registered users of the site do not see these ads.

Last edited by Donutz; 09-12-2010 at 02:25 PM.
Donutz is offline   Reply With Quote
Old 09-12-2010, 10:53 PM   #2
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by Donutz View Post
The powerplant in question is the EZ30D out of the 2001-2004 Outback L.L. Bean. The current motor is a "get the car up and running deal" it's a bit high mileage at 17XXXX miles but it still runs like a champ, putting down 175 at the wheels on a Dyno Dynamics with a full exhaust, intake and Haltech stand alone...
That's pretty impressive! When you say "full exhaust", what exactly are you guys running? I see on the dyno graph that it says OBX header, so I get that, but what about the rest. Is the exhaust 2.5" all the way back or bigger than that?

What sort of tweaks to the tuning have you done that gets that much more power out of the engine? Or do you think it's just a matter of letting it breathe better with the intake and exhaust?

Are you using the variable intake plenum at all? I'd be curious to see what (if any) difference it makes in the torque curve using it vs. not using it.

Quote:
Originally Posted by Donutz View Post
... build it with forged pistons and rods (the 2.0L WRX pistons will fit in the EZ30) ...
I think you might want to second check that. There's a reason Perrin, PDX, etc had to have pistons made.

Pat Olsen
Patrick Olsen is offline   Reply With Quote
Old 09-13-2010, 04:35 PM   #3
Dodik
Scooby Newbie
 
Member#: 122609
Join Date: Aug 2006
Location: Brooklyn NY
Vehicle:
2002 Outback H6 BE
82 GS750E

Default

very interesting results, can you tell more about the exhaust very interested as i have 02 H6 mostly stock just for your reference stock motor in stock drivetrain (4eat) put out 156whp and 160 torque. which transmission are you using right now?
Dodik is offline   Reply With Quote
Old 09-15-2010, 02:25 AM   #4
Donutz
Scooby Newbie
 
Member#: 148803
Join Date: May 2007
Chapter/Region: South East
Location: 42Autosports' Fridge w/ J.Earl
Vehicle:
11 WRX 4dr
96 Impreza 3.0RS (EZ30D)

Default

1) Ya not exactly sure if the pistons are interchangeable, just one little rumor deal we heard though we're gonna play with things before it's settled so we're gonna look into it (play = try mixing 3.6 and 3.0 stuff lol).

2) The transmission is the 2.5i stock 5 speed, albeit with an Exedy Stage 1 organic meant for a WRX

3) The wrx is the OBX headers mated to a 3" SPT catback (the bosal unit) that had the flange rotated to mate to the OBX headers. The car is also running a standalone which is where some of the power gains are (along with it being catless etc etc).

As far as what's being intake wise used its just the stock H6 motor and intake plenum (with vibrant piping and an aem dryflow on it, short ram-esque).
Donutz is offline   Reply With Quote
Old 09-15-2010, 10:43 AM   #5
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by Donutz View Post
1) Ya not exactly sure if the pistons are interchangeable, just one little rumor deal we heard though we're gonna play with things before it's settled so we're gonna look into it (play = try mixing 3.6 and 3.0 stuff lol).
The bore on the EZ30 is not the same as the EJ20 (89.2mm vs. 92mm). Unless you can cram 3mm larger pistons in there, it ain't gonna work. The EZ30 has no commonalities with the EJ engines, AFAIK (unlike the EG33, which shared a number of parts with the EJ22). The EZ36 is also very different from the EZ30, particularly the first gen non-AVCS version of the EZ30.

Quote:
Originally Posted by Donutz View Post
3) The wrx is the OBX headers mated to a 3" SPT catback (the bosal unit) that had the flange rotated to mate to the OBX headers. The car is also running a standalone which is where some of the power gains are (along with it being catless etc etc).
Gotcha.

Quote:
Originally Posted by Donutz View Post
As far as what's being intake wise used its just the stock H6 motor and intake plenum (with vibrant piping and an aem dryflow on it, short ram-esque).
Right, I could see that in the pictures. My question is whether or not you're using the variable intake plenum IRIS valve, which splits the plenum of the intake manifold in half when it's shut. The SVX intake manifold has the same thing. It's supposed to broaden the torque curve. I believe it's supposed to be shut at low RPM, splitting the intake manifold in two so you have two smaller plenums and improving low RPM torque and response, then open at ~4000rpm to enlarge the plenum for better top end. Your torque jumps pretty good at ~4000rpm - I wonder if you could beef up the <4000rpm curve if the IRIS valve was used.

Pat
Patrick Olsen is offline   Reply With Quote
Old 09-17-2010, 06:49 AM   #6
42Autosports
NASIOC Vendor
 
Member#: 257297
Join Date: Sep 2010
Chapter/Region: South East
Location: Concord, NC
Vehicle:
2002 H6

Default

Pat,

Good questions about the setup. About the pistons, you are correct about the 2L pistons - there are some other options out there that we are looking at for the build. We are currently looking for a good 'core' motor for the build. At this time, it's not a huge rush, as Donutz has to get a 6spd in the car first.

As for the IRIS valve, currently it is not in operation, although that's the next thing to be tested. We also need to do some intake testing, as the stock torque box and filter on a stick were just the quick and easy solution to get the car up and running.

Glad to see you still have your Legacy GT, I miss my Luxobarge!

Steven

Last edited by 42Autosports; 12-02-2010 at 12:47 PM.
42Autosports is offline   Reply With Quote
Old 09-17-2010, 03:03 PM   #7
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by 42Autosports View Post
As for the IRIS valve, currently it is not in operation, although that's the next thing to be tested. We also need to do some intake testing, as the stock torque box and filter on a stick were just the quick and easy solution to get the car up and running.
Cool. If you get any dyno comparison graphs, post 'em up! I'm curious to see what a difference it makes.

Pat
Patrick Olsen is offline   Reply With Quote
Old 02-03-2012, 07:17 PM   #8
aesthetect
Scooby Specialist
 
Member#: 89051
Join Date: Jun 2005
Location: brohio
Vehicle:
2001 GC6

Default

bump

gettin interested in ez30ds... curious what all you got out of it while still NA
aesthetect is offline   Reply With Quote
Old 02-27-2012, 02:04 PM   #9
Donutz
Scooby Newbie
 
Member#: 148803
Join Date: May 2007
Chapter/Region: South East
Location: 42Autosports' Fridge w/ J.Earl
Vehicle:
11 WRX 4dr
96 Impreza 3.0RS (EZ30D)

Default

funny you should ask we're just finishing up the next iteration of the build with a built (or near built) EZ30 with factory 5 over pistons, Supertech valve springs, a valve job and some decking. We'll post with results when we get them, the car's going to be stout....(and a rocketship at 2600 lbs)

you can also check us out on facebook: www.facebook.com/42autosports
Donutz is offline   Reply With Quote
Old 02-27-2012, 07:03 PM   #10
aesthetect
Scooby Specialist
 
Member#: 89051
Join Date: Jun 2005
Location: brohio
Vehicle:
2001 GC6

Default

awesome thats just what i was hoping to hear -- bumping compression at all? any thoughts on cam options for the EZ30D? what about headers?
aesthetect is offline   Reply With Quote
Old 02-18-2013, 04:19 AM   #11
TurboLag23
Scooby Newbie
 
Member#: 347343
Join Date: Feb 2013
Location: SoCal
Vehicle:
2004 Outback H6
2008 Acura TL

Default

Hey, how hard was it to hook up the 5MT to the EZ30D? Was there any work involved custom-fitting, or did it bolt right up?

Basically, I'm thinking of doing a trans swap into my OB, and I wanted to know any pitfalls that may arise ahead of time.

Thanks.
TurboLag23 is offline   Reply With Quote
Old 02-18-2013, 11:08 AM   #12
bigolrig
Scooby Specialist
 
Member#: 185347
Join Date: Jul 2008
Chapter/Region: MWSOC
Location: Lexington, OH
Vehicle:
2002 EVO3 bugeye wag
EG33 Swapped 2 dr RS

Default

nice job!
bigolrig is offline   Reply With Quote
Old 02-18-2013, 09:28 PM   #13
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by TurboLag23 View Post
Hey, how hard was it to hook up the 5MT to the EZ30D? Was there any work involved custom-fitting, or did it bolt right up?

Basically, I'm thinking of doing a trans swap into my OB, and I wanted to know any pitfalls that may arise ahead of time.
The 5MTs and 6MTs will bolt right up to the EZ engines.
Patrick Olsen is offline   Reply With Quote
Old 02-18-2013, 10:36 PM   #14
TurboLag23
Scooby Newbie
 
Member#: 347343
Join Date: Feb 2013
Location: SoCal
Vehicle:
2004 Outback H6
2008 Acura TL

Default

Quote:
Originally Posted by Patrick Olsen View Post
The 5MTs and 6MTs will bolt right up to the EZ engines.
Perfect, thanks!

Now time to save up some money! hahaha
TurboLag23 is offline   Reply With Quote
Old 08-24-2013, 03:05 PM   #15
RallyGuy2k
Scooby Specialist
 
Member#: 1146
Join Date: Mar 2000
Chapter/Region: International
Location: Houston/LA/NYC
Default

Hmmm....anyone got ideas on this one? I can't get to the dealership until Monday to have them check it out.

The EZ30 runs great but when above around 4k it sputters at WOT and has a decrease in power...I can back off and it runs better/faster than WOT. Nothing coming from exhaust, no overheating, no codes...(other than the usual auto/manual tranny codes)

I had one of the techs drive it for 2 min and thought it might be the intake manifold's iris valve not opening...which would make sense. He didn't have time to dig in, but I checked it out at home...found it and checked the hoses and solenoid...checked connection, etc. I need to take a spin to see if it had any effect. However anyone know how to test that particular system?....or rather bypass it open to see if that's the problem?

Also it's running quite rich...when I blip the throttle to downshift it's popping quite a bit...exhaust is straight from obx headers to 3" wrx spec SPT exhaust.

.

Last edited by RallyGuy2k; 08-24-2013 at 03:45 PM.
RallyGuy2k is offline   Reply With Quote
Old 08-24-2013, 04:12 PM   #16
04wrxhart
Scooby Newbie
 
Member#: 204246
Join Date: Feb 2009
Chapter/Region: NWIC
Location: Vancouver, Wa.
Vehicle:
2004 Impreza WRX
WRBlue

Default

How's the MAF look ? Fuel filter been replaced lately ? And last but not least how about spark plug condition ?
04wrxhart is offline   Reply With Quote
Old 08-25-2013, 10:33 AM   #17
vicious_fishes
Scooby Specialist
 
Member#: 158864
Join Date: Sep 2007
Location: Aussieland
Vehicle:
2003 GD w/EZ30D swap

Default

i'm going to guess it's the line from the manifold to the FPR. remember on N/A engines it provides suction. disconnecting it results in MORE fuel. that may explain the richness and poor firing.
vicious_fishes is offline   Reply With Quote
Old 08-25-2013, 11:55 PM   #18
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by RallyGuy2k View Post
The EZ30 runs great but when above around 4k it sputters at WOT and has a decrease in power...I can back off and it runs better/faster than WOT. Nothing coming from exhaust, no overheating, no codes...(other than the usual auto/manual tranny codes)

I had one of the techs drive it for 2 min and thought it might be the intake manifold's iris valve not opening...which would make sense. He didn't have time to dig in, but I checked it out at home...found it and checked the hoses and solenoid...checked connection, etc. I need to take a spin to see if it had any effect. However anyone know how to test that particular system?....or rather bypass it open to see if that's the problem?

Also it's running quite rich...when I blip the throttle to downshift it's popping quite a bit...exhaust is straight from obx headers to 3" wrx spec SPT exhaust.
I wouldn't think the IRIS valve being out of position would make it that unhappy. You might be able to reach under the front of the intake manifold to see if you can manually shift the IRIS back and forth - that might tell you if it feels like it's sticking or something.

Quote:
Originally Posted by 04wrxhart View Post
How's the MAF look ? Fuel filter been replaced lately ? And last but not least how about spark plug condition ?
No MAF in RallyGuy2K's setup (or Donutz's setup, for that matter). Checking the spark plugs to confirm the car is running rich is a good idea.

I'd be checking for vacuum leaks - a split line somewhere, or a line that isn't tight on whatever nipple it attaches to. Subaru loves to have vacuum lines that just slip onto a small diameter nipple that doesn't have any sort of lip on it, so it's easy for the hose to become loose.
Patrick Olsen is offline   Reply With Quote
Old 08-26-2013, 07:08 PM   #19
RallyGuy2k
Scooby Specialist
 
Member#: 1146
Join Date: Mar 2000
Chapter/Region: International
Location: Houston/LA/NYC
Default

Thanks for the input guys...I've played around with it but haven't gotten a chance to take it out...might take it for a spin in a few.

...one of the techs mentioned the iris...hell I still haven't found it yet. Patrick you meintioned reaching under the front of the mani....behind the alternator?...I'll check there.

No doubt about vacuum hoses...I've been checking them and will keep going.

This morning I programmed the xgauge codes for both A/F banks so I'll be able to see if I'm rich or lean.
RallyGuy2k is offline   Reply With Quote
Old 08-26-2013, 11:45 PM   #20
RallyGuy2k
Scooby Specialist
 
Member#: 1146
Join Date: Mar 2000
Chapter/Region: International
Location: Houston/LA/NYC
Default

So far both air/fuel banks look good. 14.7 for both on idle...when on throttle up above 4k or so they both go up to 11.2 to 11.7...hence the richness.

When downshifting using the motor to slow down it can run lean...ranging from 15 to 20 with no throttle.

I didn't get a chance to really let it wind out plus it was raining...but I believe the problem is better or partially solved...will know more tomorrow. Will drive it quite a bit tomorrow.
RallyGuy2k is offline   Reply With Quote
Old 08-27-2013, 12:38 AM   #21
Patrick Olsen
NASIOC Supporter
 
Member#: 120
Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Default

Quote:
Originally Posted by RallyGuy2k View Post
...one of the techs mentioned the iris...hell I still haven't found it yet. Patrick you meintioned reaching under the front of the mani....behind the alternator?...I'll check there.
Like so:


The big gold thing is a vacuum actuator, which is triggered by the maroon-ish solenoid on the right. The actuator has that arm pointing towards the front of the car (straight down in the picture), which causes the IRIS (inside the intake manifold) to shift. There are 2 posts that protrude down from the bottom of the manifold, which limit the motion of the valve. You can see them in the picture below, too.

Here's the IRIS valve itself:


Quote:
Originally Posted by RallyGuy2k View Post
So far both air/fuel banks look good. 14.7 for both on idle...when on throttle up above 4k or so they both go up to 11.2 to 11.7...hence the richness.

When downshifting using the motor to slow down it can run lean...ranging from 15 to 20 with no throttle.
11.2 to 11.7 is a little rich, but not all that bad. A N/A car is probably best in the 12.5-13.0 range at WOT; when I've dyno'd my EJ25D in the past I didn't see any change in that range, so I left it at 12.5 just to be a little safer. Stock was richer than 10:1, so 11.2-11.7 isn't bad at all.
Patrick Olsen is offline   Reply With Quote
Old 08-27-2013, 07:45 AM   #22
vicious_fishes
Scooby Specialist
 
Member#: 158864
Join Date: Sep 2007
Location: Aussieland
Vehicle:
2003 GD w/EZ30D swap

Default

Quote:
Originally Posted by RallyGuy2k View Post
So far both air/fuel banks look good. 14.7 for both on idle...when on throttle up above 4k or so they both go up to 11.2 to 11.7...hence the richness.

When downshifting using the motor to slow down it can run lean...ranging from 15 to 20 with no throttle.

I didn't get a chance to really let it wind out plus it was raining...but I believe the problem is better or partially solved...will know more tomorrow. Will drive it quite a bit tomorrow.
when you engine brake the ecu actually turns the injectors off IIRC, so don't worry about it going lean. the throttle is closed remember?

idle is what it should be, and above 4000rpm doesn't seem to be all that far off.
vicious_fishes is offline   Reply With Quote
Old 08-27-2013, 10:58 AM   #23
RallyGuy2k
Scooby Specialist
 
Member#: 1146
Join Date: Mar 2000
Chapter/Region: International
Location: Houston/LA/NYC
Default

I just gave my engine a reach around.

LOL...I felt around...not much to do without popping the mani off. I've already checked the solenoid. Not much to see...wondering if I raise the RPMs above 4k if I'd be able to see/hear it activate. Might try before heading out.

Might run 12v to the solenoid to hear it click as well...these are not polarity sensitive am I right?

Thanks for the help guys.


Update:
Ran 12v to the solenoid and it works fine but noticed that one of the two hoses running to it was loose...might have been leaking. I cut the loose end off and reattached it...much tighter. Will check results on the road.

.

Last edited by RallyGuy2k; 08-27-2013 at 11:30 AM.
RallyGuy2k is offline   Reply With Quote
Old 11-26-2013, 09:56 PM   #24
95widbod
Scooby Newbie
 
Member#: 307606
Join Date: Jan 2012
Default update

need an update on reolts as i am having the same issue and would rather not tare my stuff apart if i dont need to
95widbod is offline   Reply With Quote
Old 11-27-2013, 06:29 AM   #25
vicious_fishes
Scooby Specialist
 
Member#: 158864
Join Date: Sep 2007
Location: Aussieland
Vehicle:
2003 GD w/EZ30D swap

Default

so what the hell is this "iris" thing anyway?
vicious_fishes 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
Event: DriftWater 3.1 (Grip Inside) ProjektPhoto Mid Atlantic Impreza Club -- MAIC 15 09-07-2009 08:19 PM
3.0RS. Possible? UniqueTII Built Motor Discussion 5 03-15-2008 01:58 PM
Last day for 2002/3 Accessport (Reserve inside) Expatbrit Private 'For Sale' Classifieds 0 08-14-2005 10:25 AM
I keeps it old school, bitch! (browsing OT on Netscape 3.0...screenshots inside) Kaiser Off-Topic 15 07-06-2005 04:15 PM
The last 3 Get Fuzzy comics (funnAy inside) Spheris Off-Topic 3 05-08-2004 04:04 PM


All times are GMT -4. The time now is 07:48 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.