Info on EJ25 Quadcam wanted

Venom · Post by **Venom** » Thu Dec 09, 2010 3:19 pm

2002 seems a bit late for a carryover, yet seems more likely than a mystery 2.5 that doesn't appear in any official manuals. If someone could check their engine code on a 2.5 Gen2 then you could atleast rule it out/in.

RSR 555 · Post by **RSR 555** » Thu Dec 09, 2010 3:44 pm

Venom wrote:2002 seems a bit late for a carryover, yet seems more likely than a mystery 2.5 that doesn't appear in any official manuals. If someone could check their engine code on a 2.5 Gen2 then you could atleast rule it out/in.

It's definately not the same as the Gen2 EJ25.. I've rebuild many due to head gasket problems and this Gen3 EJ25 is not the same. This Gen3 is a full JDM spec car and it looks like I'll have to contact some Japanese friends.

guyph_01 · Post by **guyph_01** » Thu Dec 09, 2010 9:17 pm

Hummm, i still haven't had any luck with the other forums and by searching and all jap stuff are in Jap writing.
Thx so much for the help and looking into this Paul:)

Gannon · Post by **Gannon** » Sat Dec 11, 2010 2:55 pm

Looking at the VIN plate, it definitely looks like it is a JDM model and not an export because the VIN starts with the model number (BH9) and there is no JF2 in front of it.

I found a few pages that suggest that the Japanese got an EJ25 with dual overhead cams and AVCS

http://english.auto.vl.ru/catalog/subar ... 0_5/28660/

http://www.trademe.co.nz/Trade-Me-Motor ... 470853.htm

So where did you find this engine and what are your plans?

I have tried looking for JDM manuals but i cant find anything

Post by **TOONGA** » Sat Dec 11, 2010 3:14 pm

Guy got it from somewhere I would think it will all become apparent when the deal is finalised

if everyone finds out about it then will someone snake the deal

I think they call it free enterprise

amazingly they are the first untranslated pages Ive seen on this car

TOONGA

RSR 555 · Post by **RSR 555** » Sat Dec 11, 2010 3:53 pm

Suparoo wrote:Looking at the VIN plate, it definitely looks like it is a JDM model and not an export because the VIN starts with the model number (BH9) and there is no JF2 in front of it.

I found a few pages that suggest that the Japanese got an EJ25 with dual overhead cams and AVCS

http://english.auto.vl.ru/catalog/subar ... 0_5/28660/

http://www.trademe.co.nz/Trade-Me-Motor ... 470853.htm

So where did you find this engine and what are your plans?

I have tried looking for JDM manuals but i cant find anything

Thanks Gannon.. that's a great start.. I know the 1/2 cut is a JDM and can get the VIN of it when I get home.

Guy's plan's are to fit it into his grey wagon.. see his xmas wish on Hazey's thread

TOONGA wrote:Guy got it from somewhere I would think it will all become apparent when the deal is finalised

if everyone finds out about it then will someone snake the deal

I think they call it free enterprise

amazingly they are the first untranslated pages Ive seen on this car

TOONGA

No big sercet.. he got it from me and I won't sell it to anyone else as I promised it to Guy when he returns from his visit to his family

guyph_01 · Post by **guyph_01** » Sat Dec 11, 2010 4:27 pm

Another idea would be to get a Japanese repair manual and find a japanese Mechanic in Perth to help out:p

wrxer · Post by **wrxer** » Sat Dec 11, 2010 11:48 pm

i bought a full gasket set for my ej25 dohc gen2 outback from the USA. it came with 4 rocker cover gaskets. 2 suited my dohc and other 2 didnt. maybe they suit the avcs heads. the kit didnt specify gen2 and i really only bought it for the head gaskets.

guyph_01 · Post by **guyph_01** » Wed Dec 15, 2010 5:39 am

This is the only reply i got from a member on RSliberty:)

they are pretty much the same wiring except for the extra avcs inlet cam wiring ( cam position sensors, cam oil control solenoids) unfortunately thats all i can offer,

Still searching:S

AndrewT · Post by **AndrewT** » Wed Dec 15, 2010 9:21 am

Guy, How much extra power and torque are you expecting over your existing EJ22?
All the trouble Vidler went through doing practically exactly the same as this (upgrading his EJ22 in his L series to a quad cam EJ25) from memory he admitted it really wasn't worth it. Felt a bit more torque. That was a Gen2 quadcam EJ25 though, maybe this Gen3 one of yours is race spec compared to that I don't know

If you get stuck with the wiring you could just send the harness over to Al at AmAuto, I'm sure he would be able to sort it, give him a call and see if he'll do it and give you a price.
Another avenue might be to use an aftermarket ECU - maybe a map based one which doesn't need the original harness.

guyph_01 · Post by **guyph_01** » Fri Dec 24, 2010 6:04 pm

Well to tell you the truth the EJ22 on my car rattels, Leaks empty in about 2-3months and is not the best on compression. So my options were to rebuild one or get a newer second hand engine.

So either a newer EJ22 or a EJ20. But then the opportunity came up and that EJ25 was at a very good price. So i jumped on the occasion, thx Paul, and thats about it.

Its not beacause i am expecting 10 times more power, its just i was gonna need a newer engine anyway.

Man its hard to get info on that engine.
Nothing yet!
Anyone found something?

guyph_01 · Post by **guyph_01** » Fri Jan 14, 2011 6:59 am

I was told this on USMB:
"Do searches for EJ25D and that should point you in the right direction. Also, look on the wikipedia article for "subaru ej" engine, and see if the "ej25d" matches the year and market for the production of your car."

But when looking at the EJ25d on wikipedia, it says:
"The EJ25D has demonstrated leaking head gasket issues on occasion. There were (at least) two variations of the EJ25D sold in the US market. The engine was introduced in 1996 in the Legacy 2.5GT and LSi and Legacy Outback. That version of the engine used HLA heads, was recommended to be run on 91 octane fuel, had lower power and torque ratings than the later '97-99 EJ25D, and was only offered with an automatic transmission. In 1997 a revised engine was introduced that used heads with shimmed bucket lifters (versus the HLAs), was designed to run on 87 octane fuel, and was available with either a manual or automatic transmission."

Also found The EJ257 thats got the AVCS heads,
"DOHC 16 valve turbo. Originally designed for the North American Impreza STI in 2004 with AVCS and DBW. The same exact shortblock as EJ255 except the EJ255 has a different domed piston vs the EJ257. The heads also have different components. Subaru of America designates the same part numbers for an EJ255 shortblock, and EJ257 shortblock with the exception of the pistons.

* US Market Impreza WRX STi MY04~MY07 (300 hp, 293 hp (New SAE standard))
* US Market Impreza WRX STI MY08~MY10 (305 hp (New SAE standard))
* US Market Subaru Legacy/Subaru Outback MY05~MY06
* Asian, European Market Impreza WRX STi 05~present (280 hp, 40KGh/m)
* JDM Forester STI MY05~present"

http://en.wikipedia.org/wiki/Subaru_EJ_engine

Thoughts? Is it the EJ257? only thing is dates and loctaion don't match since the frontcut is from jap, is an outback and is around 2002. And its TURBO.

bobbyjimmy · Post by **bobbyjimmy** » Fri Jan 14, 2011 7:33 am

EJ257 is an STi 2.5 Turbo.

Gannon · Post by **Gannon** » Fri Jan 14, 2011 3:16 pm

The EJ25 you are looking for i doubt will be on wikipedia. It was JDM market model only and because most of en.wikipedia is written by english speaking people, there is no information on it.

guyph_01 · Post by **guyph_01** » Fri Jan 14, 2011 9:48 pm

Yes thats what i was thinking too. Any japanese speaking people here that could do some research on the jap sites?

AndrewT · Post by **AndrewT** » Fri Jan 14, 2011 10:13 pm

Thinking outside the box, perhaps you could look into sourcing an aussie engine loom, ecu and ecu loom for an EJ25 quadcam. Might prove easier.

guyph_01 · Post by **guyph_01** » Sat Jan 15, 2011 2:10 am

Yes but it would be hard to tell if all the sensors/plugs are the same. plus doesn't the jap stuff inc ECU have a bit more grunt?

guyph_01 · Post by **guyph_01** » Tue Mar 08, 2011 11:35 am

Hi guys,
Still nothing interesting was found yet. I'm still looking and can't find much.

Details are:
Outback with ej25 N/A Quad cam.
Model:BH905AE
Engine num:EJ254DXDBE
Chassis num:BH9-061735
AUTO Trans num: TZ1B4ZKDAA
We think its a 01-02 model

The ECU plugs look like this

If anyone can help that would be greatly appreciated. I need the wiring diagram so Dave can cut the loom down. At the moment he is blind and he can't afford to screw up as I won't find another loom easily:( It will just make it much easier for him to cut it down:)

Thx

guyph_01 · Post by **guyph_01** » Tue Oct 25, 2011 3:47 pm

Hey guys,

So with Paul's intuition we are hoping that the wiring for my engine is that same as the Oz delivered outback and liberty, well hopefully they will have the same colour wires for the tacho and starter and speed sensor.

Anyway would anyone have something to suit the OZ ej25 DOHC that can help Dave figure out the last wires we need to hook up:)

This is what my ECU plugs look like:

Post by **TOONGA** » Tue Oct 25, 2011 3:57 pm

Guy everything I have is from this site

http://jdmfsm.info/Auto/Japan/Subaru/Legacy%20Outback/

it may be helpful

TOONGA