Welcome to the North American Subaru Impreza Owners Club Thursday April 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 > 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 11-23-2011, 07:16 PM   #1
Box This
Scooby Specialist
 
Member#: 50149
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: NJ
Vehicle:
06' STi that
eats V8's

Default My "JDM" EJ25 arrived, anybody know what (these things) are?

Destroyed my 98 outback USDM EJ25.. Ordered this "96-99" Outback JDM EJ25 from Nagano USA. It arrived today and I'm a little confused about a few things.

1.) Does anybody know what this might have come from, or year it is? (Block number shown)

2.) Is that "flywheel" a piece for an automatic transmission? I have a 5 speed.. need to switch my flywheel over apparently.

3.) Does the different (less holes) bolt pattern of the JDM block mate up to my 5 speed USDM transmission, or did they screw me on this one by not mentioning that?

4.) What the hell is that white stuff inside the throttle body.. From detailing the engine? Or did it come from the bottom of an ocean?

5.) The harness appears to have completely different connectors, do I swap over my US harness and intake manifold?

6.) The block is drilled for an EGR.. but it looks like it was just done before shipping, clean new threads... are there any other markets that use the EGR system (this one didn't have it originally, but the manifold has a plug in it that leads to nothing in that area.

7.) Is that thermostat housing completely different or no? Can't tell as it's dark out right now and the engines are tarped up.













Any help greatly appreciated, I find it really confusing that Subaru would use so many different parts.. even the canister for the power steering fluid is nothing like mine. I should probably try to use it, mine leaks.
* Registered users of the site do not see these ads.
Box This is offline   Reply With Quote
Old 11-23-2011, 07:57 PM   #2
ditto151
Scooby Newbie
 
Member#: 261850
Join Date: Oct 2010
Chapter/Region: BAIC
Location: Oakland
Vehicle:
1994 RS
Red

Default

1.) i dont know the answer

2.) the circle thing where the flywheel goes is the flex plate for an automatic transmission so you will need to use the flywheel on your old motor

3.)the bold pattern for the holes look the same

4.) that stuff looks like a mystery ;-)

5.) you might have to merge the two some how

6.) i dont see an EGR on the intake

7.) the power steering fluid reservoir is the same as the usdm motors keep the one on that motor and just change the banjo bolt on the unit to fit the lines on your car

the thermostat is different because of the exhaust manifold
good thing is that its a turbo motor ;-)
ditto151 is offline   Reply With Quote
Old 11-23-2011, 08:06 PM   #3
sackytar
Scooby Guru
 
Member#: 149262
Join Date: May 2007
Chapter/Region: MWSOC
Location: Grand Rapids MI
Vehicle:
03WR XRace/XTDD/98SJ
PrimerGrey

Default

**** that's clean
sackytar is offline   Reply With Quote
Old 11-23-2011, 08:24 PM   #4
ditto151
Scooby Newbie
 
Member#: 261850
Join Date: Oct 2010
Chapter/Region: BAIC
Location: Oakland
Vehicle:
1994 RS
Red

Default

when you bought the motor was it titled turbo motor
ditto151 is offline   Reply With Quote
Old 11-23-2011, 08:34 PM   #5
Box This
Scooby Specialist
 
Member#: 50149
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: NJ
Vehicle:
06' STi that
eats V8's

Default

I bought it saying:

http://www.ebay.com/itm/160676801453...S:1123&vxp=mtr


This Auction is for USED JDM SUBARU LEGACY GT, OUTBACK 95-99 FORESTER 95-98 EJ25 DOHC COMPLETE MOTOR
WITH approximately 40,000 MILES on it

Doesn't say turbo, or NA but there are a lot of things on top I don't recognize.

JDM EJ25 2.5L DOHC ENGINE
INTAKE MANIFOLD
EXHAUST MANIFOLD
POWER STEERING
AC COMPRESSOR
ALTERNAOTR
INJECTORS
FUEL RAIL

Please tell me this was an NA engine lol I don't want a headache trying to make this thing work.

Also, to the person who said it's clean, they soak them in degreaser before shipping which sucks, because then you can't tell if anything was leaking previously.

Also the power steering reservoir looks different than the one in my car currently, I'm guessing it's either newer, or just what the JDM vehicles used? Never seen a canister like that with the bolts, mine is just a soda can shaped cylinder with a yellow cap.
Box This is offline   Reply With Quote
Old 11-23-2011, 08:40 PM   #6
ditto151
Scooby Newbie
 
Member#: 261850
Join Date: Oct 2010
Chapter/Region: BAIC
Location: Oakland
Vehicle:
1994 RS
Red

Default

the power steering is fine i have the same one on my car, but the reason about the motor being turbo is because of the exhaust manifold its not the n/a one it looks more like the turbo one i could be wrong but i never seen one like that before maby it could be for the auto trans that it came with but you can always use your old exhaust manifold

Last edited by ditto151; 11-23-2011 at 08:51 PM.
ditto151 is offline   Reply With Quote
Old 11-23-2011, 10:53 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 Box This View Post
I find it really confusing that Subaru would use so many different parts.. even the canister for the power steering fluid is nothing like mine. I should probably try to use it, mine leaks.
It can definitely be confusing/frustrating, but I also find it somewhat fascinating how many different variations Subaru has used over the years.

Quote:
Originally Posted by Box This View Post
1.) Does anybody know what this might have come from, or year it is? (Block number shown)

2.) Is that "flywheel" a piece for an automatic transmission? I have a 5 speed.. need to switch my flywheel over apparently.

3.) Does the different (less holes) bolt pattern of the JDM block mate up to my 5 speed USDM transmission, or did they screw me on this one by not mentioning that?

4.) What the hell is that white stuff inside the throttle body.. From detailing the engine? Or did it come from the bottom of an ocean?

5.) The harness appears to have completely different connectors, do I swap over my US harness and intake manifold?

6.) The block is drilled for an EGR.. but it looks like it was just done before shipping, clean new threads... are there any other markets that use the EGR system (this one didn't have it originally, but the manifold has a plug in it that leads to nothing in that area.

7.) Is that thermostat housing completely different or no? Can't tell as it's dark out right now and the engines are tarped up.
(1) Don't know.

(2) As already stated, that's a flex plate for an automatic. Just swap over your flywheel.

(3) I'm not sure what you're seeing that you think is different, but it looks exactly like all of the Phase I blocks I've seen. The Phase II blocks add some additional mounting points, but they're still interchangeable.

(4) Not sure on that one, but I guess it wouldn't surprise me if it's some sort of cleaning residue. As you said, they pretty well douse these engines, and who knows what cleaning methods they use before they get all coated in Armor All!

(5) I've done Ebay/JDM swaps twice, and both times I swapped my intake manifold, harness, injectors, sensors, etc onto the JDM engine. I figured I knew all that stuff was good on my engine, and I knew the harness would connect right up, so might as well use the known parts rather than throwing on a bunch of unknowns.

(6) I assume you mean the driver side head is drilled for EGR, not the block. I've seen one Ebay/JDM engine with EGR, and one without. With all the other differences

(7) Because your "new" engine has that different exhaust manifold, that looks like the turbo-style water neck / t-stat housing. I had the same thing on mine (although mine didn't come with the exhaust manifold, so I didn't understand why the t-stat housing was different). I just swapped my USDM on in its place.

I don't think that's a turbo motor. AFAIK all of the EJ25 turbos have remote PS reservoirs because the turbo inlet runs under the intake manifold and a PS reservoir like the one on your engine would be in the way. And I have seen pictures of that turbo-style equal length exhaust manifold on JDM N/A somewhere before.

Pat Olsen
Patrick Olsen is offline   Reply With Quote
Old 11-23-2011, 10:59 PM   #8
JoshP
Scooby Specialist
 
Member#: 94350
Join Date: Aug 2005
Chapter/Region: NESIC
Location: S. Maine
Default

thats a nice looking motor for sure
JoshP is offline   Reply With Quote
Old 11-25-2011, 07:06 AM   #9
Box This
Scooby Specialist
 
Member#: 50149
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: NJ
Vehicle:
06' STi that
eats V8's

Default

Alright I got the job done yesterday, thanks for the input everybody, I found some things out.

The water passage across the top of the block is marked 97 - 4 - 23 (the date manufactured) which is interesting because my stock one doesn't, but It's in the general time frame of my car being a 98.

I swapped over my flywheel, I need to order a new one but it bolts up with np problem. The only difference was the plate behind the flywheel on both engines is different. The US version is flat metal and uses hex bolts, the JDM one is plastic and uses JIS screws.

The trans mated to the engine just fine, albiet less mounting points on the sides so now I have 2 bottom nuts, 2 side pins, and the two top bolts.

After noticing that the cooling system is also full of white crud, I realized that it's aluminum corrosion, simply the engine was sitting for probably 10 years in a junkyard somewhere and the aluminum with moisture trapped inside eventually corroded, no big deal I used my manifold / TB / harness etc and flushed the cooling system.

The JDM harness is useless indeed, not even close to being worth trying to splice, as mentioned thanks guys for the tip on just swapping.

oops, yes I meant the drivers side head is drilled for EGR, I hooked it up and they did a good job tapping it because it threaded right in and it works.

I retained the t-stat housing because even though it is different the hose routing was still the same, so I was able to just fit the coolant hose on and that was that.


All in all it took 10 hours total to remove the engine, swap the short blocks (using my manifold / harness / accessories) install a new clutch kit, and get the engine back in the car, get it running. All this in a muddy yard with hand tools and no jacks.

My advice to anybody attempting a swap, make sure the ground is solid! lol. Pretty easy all in all, it took me longer to swap a celica motor.
Box This is offline   Reply With Quote
Old 11-25-2011, 08:16 AM   #10
devilmademedoit
Scooby Newbie
 
Member#: 289267
Join Date: Jul 2011
Chapter/Region: Tri-State
Location: North Jersey
Vehicle:
03 wrx
wrb

Default

Nice I did one over the summer. Year is stamped inside the oil cap. I had to use my manifold and wiring harness and had to tap the head for the egr myself. It wasnt bad. For the money these engines cost, its definately worth putting in some wrench time. I also did the timing belt just for piece of mind.
devilmademedoit is offline   Reply With Quote
Old 11-25-2011, 09:26 AM   #11
JoshP
Scooby Specialist
 
Member#: 94350
Join Date: Aug 2005
Chapter/Region: NESIC
Location: S. Maine
Default

You should have swapped that metal oil separator plate over, from the behind the flywheel.
JoshP is offline   Reply With Quote
Old 11-25-2011, 10:25 AM   #12
ArronStump
Scooby Newbie
 
Member#: 182620
Join Date: Jun 2008
Chapter/Region: SWIC
Location: Flagstaff az
Vehicle:
07 sti
DGM

Default

Quote:
Originally Posted by Patrick Olsen

I don't think that's a turbo motor. AFAIK all of the EJ25 turbos have remote PS reservoirs because the turbo inlet runs under the intake manifold and a PS reservoir like the one on your engine would be in the way. And I have seen pictures of that turbo-style equal length exhaust manifold on JDM N/A somewhere before.

Pat Olsen
For the v8 and up they use a remote p/s reservoir, but from the 92 leggy Turbo on up to the v7 sti Thu have a pump with reservoir on them.

The t stat housing is no question, subaru has a few different designs for there water pumps so fit different radiator styles.

Looking at the motor it looks like a phase 2 ej251 dohc n/a.

Also clean that full intake Mani, that crap will be the end of the motor.
ArronStump is offline   Reply With Quote
Old 11-25-2011, 10:44 AM   #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 Box This View Post
The only difference was the plate behind the flywheel on both engines is different. The US version is flat metal and uses hex bolts, the JDM one is plastic and uses JIS screws.
That's the oil separator plate, and there have been at least 3 or 4 different variations that I've seen myself or seen pictures of.

Plenty of parts you can sell to recoup some money, which is always nice.
Patrick Olsen is offline   Reply With Quote
Old 11-25-2011, 09:33 PM   #14
Box This
Scooby Specialist
 
Member#: 50149
Join Date: Dec 2003
Chapter/Region: Tri-State
Location: NJ
Vehicle:
06' STi that
eats V8's

Default

Another stance thing I was getting ping real bad and I put in 93 octane and it stopped. It's acting like a higher compression motor but I'm not sure If there is a difference in cr. This engine feels noticeably faster I didn't just imagine this I had three people in the car thAt didnt know i replaced the engine abd said it felt a bit more peppy. The engine is loud running under load unlike any of my other subarus. Strange things worth wondering. Perhaps some of it such as loud has to do with coming from a junkyard after sitting ten years lol.
Box This is offline   Reply With Quote
Old 12-01-2011, 04:17 AM   #15
02CWRX
Scooby Specialist
 
Member#: 196013
Join Date: Nov 2008
Chapter/Region: NWIC
Location: Woodinville, WA
Vehicle:
2002 WRB WRX
EJ207 6-Speed

Default

Some of the earlier US engines required 91 octane, they didn't go to 89 octane until the later years (98+ I think). Also, fuel over in Japan has MUCH higher octane ratings, so its possible you might need to run premium to keep it happy if the ECU is tuned for local Japan-land fuel. This coincides with what I saw after looking at the timing maps on my JDM ECU for my STi swap for my WRX. There is no way you could safely run it with US gas at all IMO. I ran premium in it, but if I tried to use boost at all, it wasn't too happy and pulled a lot of timing. I was mixing with high octane unleaded race fuel to get the octane rating I was after for the first couple months until I could tune it to our fuel.

~T.J.

Last edited by 02CWRX; 12-05-2011 at 04:55 AM.
02CWRX is offline   Reply With Quote
Old 12-04-2011, 04:13 PM   #16
Scoobie Steve
Scooby Specialist
 
Member#: 2289
Join Date: Sep 2000
Chapter/Region: Tri-State
Location: Bangor, PA
Vehicle:
1998 11.87@112mph
Subaru L Ver 6 STi Type R

Default

Looks like a very clean very high mileage engine. See the rtv on the camshaft seals. No reason to reseal the camshafts until 100k+. Did you remove the intake mani? most likely sludged up with carbon just like near the throttle body. Carbon build up on pistons could lead to detonation also. My advice is to be careful when buying jdm engines because this engine has way more miles then 40k. Pressure washer, Armor All and salt free roads will make any mileage engine look like new. Also keep and eye out for oil leaks. Most of the high mileage jdm engines I get have seals hard as rocks.
Scoobie Steve is offline   Reply With Quote
Old 12-05-2011, 05:58 PM   #17
brooks22
Scooby Newbie
 
Member#: 276112
Join Date: Mar 2011
Chapter/Region: South East
Vehicle:
2006 WRX
Aspen White

Default

1997 Legacy motor is my guess. They made them NA DOHC that year
brooks22 is offline   Reply With Quote
Old 12-09-2011, 03:19 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 brooks22 View Post
1997 Legacy motor is my guess. They made them NA DOHC that year
As they did in 1996, 1998 and 1999.
Patrick Olsen is offline   Reply With Quote
Old 12-10-2011, 12:36 PM   #19
dysh@
Scooby Newbie
 
Member#: 217880
Join Date: Jul 2009
Chapter/Region: International
Location: Lepeshka + Manty
Vehicle:
'98 JDM TypeR
EG33TT

Default

This is phase I EJ25D 96-98 legacy/grand wagon engine.
It was without EGR system.
dysh@ 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
Anybody know what wheels these are? slcwagon Rocky Mountains Impreza Club Forum -- RMIC 24 04-01-2009 02:28 PM
Anybody know what mirrors these are? A Guy with a STi Interior & Exterior Modification 12 12-15-2008 01:43 PM
anybody know what guages these are? yellowscooby New England Impreza Club Forum -- NESIC 12 07-29-2004 03:47 PM
Anybody know what these are for??? 2000vfr800 Mid West Subaru Owners Club Forum -- MWSOC 10 11-15-2002 11:58 AM
Anybody know what Legacy turbo pistons are made of? cdigerlando Factory 2.0L Turbo Powertrain 10 05-16-2001 12:08 AM


All times are GMT -4. The time now is 11:46 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.