Just wondering how many people are using the later model subie engines?
After doing about 10 looms for 94-2000 subaru motors, and destroying my engine big end at wakefield, I decided to upgrade to a 2003 WRX engine, computer and loom etc. Taking it on as the next challenge.
There is a fair bit of extra stuff in the later model:
Two 02 sensors (one before and one after the cart)
Exhaust gas temp sensot (EGT)
Fuel pressure, temp and level inputs
Variable speed fuel pump
Variable cam timing (some models)
Variable intake
cruise control (i started to cut out out but then thought might as well keep it in)

The one thing that attracted me to the later model stuff is the computer is flash tunable and has OBDII. I already have an ECUDATASCAN and the laptop programming cable that I use on my 08wrx, and its all compatible with the 03.

I have just about got my heads around everyhting and started chopping the loom up.
Problem I still have is the factory immobiliser, it has a RFID type thing in the key, which interracts with a black box and then talks two wires to the ECU, no key = no start. Trying to get hold of the matching key, otherwise might have to swap the ECU for a jap one without the immobiliser integration.

Took a few photo's today hooking power up on the floor to test with Ecudatascan and romraider.

heeey your the guy with the bugtech in the buggy?
thought i recognised that screen in the pic, handy bit of gear hey?
perhaps amauto might be able to help you trick the ecu without the key...
not sure but they should have a decent idea, that or a subie shop near you has surely worked it out, if not im sure they can supply a jdm ecu to plug in

Hi Andrew, I am running the same motor in my Gen 2 liberty

I ditched the late loom and I am running a V3 sti loom with a RA V3 ecu. It has adjustable cam gears ( I made these ) and I fitted a V3 throttle body. Cams are Jun 264 jobs with the VF34 turbo & a remote IDC valve.


PS you must fit the killa B sump baffle plate & oil pick up in this motor ! I come back with the link

+ one for you to do this wiring

http://www.killerbmotorsport.com/index_files/PartsList.htm 

Ahh that looks the goods Neil!
I was running the bug@5speed sump, but now that I am putting the subie box in I need to use something that can use the stock engine mounts.

Also you might know, I am building up the new engine with the legacy closed dock block and 2002 wrx crank, rods and heads. Thinking of putting some forged pistons in, but not sure which ones to get, the early model ones to suit the block with the bigger skirt and the 4 vlave recesses, or the later model ones with the square recess.

STIDUB: Nah bugtech isnt mine. Good news about the key, contacted the guy I bought the engine/loom from and he has found the key for me!

Andrew the late model crank are rear thrust. The RS/ early wrx / legacy cranks are center thrust. what is the ( MY02 ) crank you have there ?

you will need a pistons that have correct oil control rings fitted other wise you will just have on going oil issues when you throw the car around.again the sump baffels & a Number 12 oil pump is a must have !

Can you post a photo of the crank and the rods you have there for me. I have some 207 STI / 2.5 257 sti rods here I dont need. If yours are less quality I would rather send these ones to you. while I am on this subject if you have to machine the crank to make it center thrust I would get a 2.5 ltr crank and built a 2.1ltr, you will need rods & pistons, but its a better end result ( should you have a after market ecu fitted ) if you are running a stock ecu with this build keep it 2ltr. I am guessing this is for the buggy ?

Hi Neil, thanks for the reply, Yes you are correct on the thrust bearing, looks like I didtnt see that one. The other option I may have is machine the block so it can accept the thrust bearing on #5. Or just get my early model crank reground.
I may take you up on the sti rod offer! I am keeping the stock ecu, however being the later model, its flash tunable. Yeah this is for the buggy.

Also a side note, I went to the reconidtioners today, he started on the 02wrx heads, but found a few hairline cracks around the sparkplug holes, However pressure tested really well and were in good nick otherwise, thought it would be a writeoff untill I just did a bit of net research, looks like it's a very common problem on the 02/03 heads. Bit of a mixed reaction as to wether they are throw aways or not, but most people say that if they pressure test ok, use them and that people have put them back on and never had a drama with them. A lot of people probably are driving around with cracks in them and wouldnt even know.

Beginning to dislike this engine rebuild idea... No wonder i like the wiring side of things better

G'day Andrew

Please please take that sump off & make your own.

regards
Jak

Hi

Most Subaru places can match the key up with the ECU.

Steve

That is an expensive process, Subaru wants $386 for the key + cutting + $55 workshop fee to flash the ECU. At those prices if you don't have a key a JDM ecu looks cheap.

Quote:

Originally posted by ratbug Hi Neil, thanks for the reply, Yes you are correct on the thrust bearing, looks like I didtnt see that one. The other option I may have is machine the block so it can accept the thrust bearing on #5. Or just get my early model crank reground. I may take you up on the sti rod offer! I am keeping the stock ecu, however being the later model, its flash tunable. Yeah this is for the buggy. Also a side note, I went to the reconidtioners today, he started on the 02wrx heads, but found a few hairline cracks around the sparkplug holes, However pressure tested really well and were in good nick otherwise, thought it would be a writeoff untill I just did a bit of net research, looks like it's a very common problem on the 02/03 heads. Bit of a mixed reaction as to wether they are throw aways or not, but most people say that if they pressure test ok, use them and that people have put them back on and never had a drama with them. A lot of people probably are driving around with cracks in them and wouldnt even know. Beginning to dislike this engine rebuild idea... No wonder i like the wiring side of things better

Andrew, you machine the crank to center thust & the block says as it is with a STD bearing in the rear

I got this from Tony Knight at Knight racing engines SA

I put the old crank back in, might just get it reground, i'll leave it to the experts and see what they want to do, although the new crank looks like it may work, not 100% certain, so hate to be wrong. The thrust clearances seem similar, but dont have the good tools at home to measure accurately.
Every singl cylinder has the cracks.
Yeah I got the barrel with the circular ring around it with a two pin plug coming out, (its apparently just 20 turns of wire), then this two pin plug plugs into a black box with the mitsubishi symbol and 138khz (guessing its the RF freq of the key) wirtten on it, then this is wired to power, a few other ancilaries and two pins traced to the ECU.
When I get the key, I might experiment, see if i can see any change in the memory of the ecu with the key in/out. I can still get comms and actuators on the motor working without the key, I'm guessing maybe it just not fires the injectors or coils or something like that. I get no error codes saying the key is missing.

How much you want for the sti rods?

Rods are yours, just pay the post mate

No gotta give you something for them... Just transferred you some $$ should more than cover postage! PM'd you my work address...

ok , I will put the amount you PM me in to the kids account.

ok , these are the cam wheels ( centers ) I made in the group buy

If you get a set of late ACVS heads like you late motor you have there. This allows you to use the early wiring harness on the late model heads motor by fitting a cam angle sensor to the AVCS solenoid outer plate you simply set the air gap to the cam wheel & your away.

My 2.5 made 330HP & 430nm at the wheels ( all 4 ) with a DT06 20g & 272 cams

I have only made these up for a special few people ( yes Reuben is special ) and have a limited number left. To do this we all provided our cam wheels & I machine out the stock early RS/ WRX cam wheels & drill and tap the holes. They have hardened washers and high tensile cap screws.

Ohh nice, only thing is my 2002 heads arn't ACVS. Apparently the oz ones didnt come out with AVCS until a bit later, but all jap ones did except for the forester. I still have the metal cams from the RS motor.

These still fit Andrew, i am running the same heads on my 207

Got a new toy on the weekend!
A subaru 2004 SG5 Forester Frontcut with 55,000kms. EJ20T with AVCS and fly by wire. I was hoping it would be similar to the wrx, but the ECU wiring is totally different. All the other components seem the same (apart from the throttle control obviously). I havn't yet been able to get into the maps of the computer.
I'm rebuilding my old engine with some goodies from the U.S. ordered them just before the exchange rate started to drop.

manual or auto half cut Andrew ?

is the steering rack 2.7 turns lock to lock ?

Whoa forgot about this post, it is an auto. Not much use for me, until the idea of an auto grew on me, until I realised there was no easy way i could get the big heavy lump to fit and make it easy to road register. Steering is more than 2.7, more like 3 and a bit.
Should be getting my reversed subie box back from Todd soon, but still havn't got my engine block back from the machine shop. The forester wiring loom and engine ecu seem a bit odd-ball.. Might chase a 2003-2004 wrx front loom and make it consistant with the buggy wiring loom.

Mate , I have a MY03 ecu here


6E
22611AH770
1122005161