6 replies to this topic

[eweisner]

My 2003 2.5L Legacy needs a transplant. Researching the posts I fould this statement from grossgary "95 EJ22's = dual port exhaust. 96+ EJ22's = single port exhaust. the EJ25 is dual port (like 95 EJ22's)" If I understand correctly a '95 EJ22 will bolt direclty into my car? I'm head out tomorrow to a pull n save and have the following options:

(2) 1995 Legacy's
(1) 1999 Forester
(1) 1995 Impreza

I know you guys have talked about this in other posts but I've not seen a post about anything newer than a '99.

Edited by eweisner, 02 November 2012 - 11:21 PM.

[porcupine73]

I've never done it, but just some notes I remember from similar posts....

Will definitely need ECU from old engine; your engine is speed density airflow based - those older engines you listed will be MAF based.

You're probably going to want the wiring harness then too. Not sure if there will be any communication issues to the TCU if it's an AT, since you have a phase II 4EAT if it's an auto, and those would've all had a phase I.

Emissions charcoal canister stuff, you may have to play around with that a bit to get it working.

Additional note on ECU's: if you have to pass ODBII emissions inspection, you might not make it with the '95, since ODBII startd in '96. Subaru did have ODBII in their '95 ECU's though I understand it might have been a bit quirky.

Ditto issue on '96 ECU, it resets all I/M's every time the engine is started. So for your 2003 for example if they're going to require no more than one not ready, that '96 ECU might be a problem to pass with?

Possible issues with EGR vs. non-EGR.

[grossgary]

*** NO*** the 95 EJ22 engine will not work in your car.

(1) 1999 Forester

You are in luck - that 99 Forester is the SOHC EJ25 that you need. Here are the engines you can use:

EJ22: 1999+
EJ25: 1999 forester and Impreza RS ONLY and all 2000-2004

For a 2003 you need a 1999+ Phase II EJ22 to swap into your 2003. The problem is that 99 EJ22's are hard to find and more expensive so it's not as easy of a swap.

If your 2003 has EGR then the engine needs EGR and there are no dual port options for 99+ EJ22's so you have to get the exhaust manifold (but the exhaust manifold is identical so it bolts right up).

is the 2003 repairable? if you mentioned what's wrong with it you might have other options.

there are two types of EJ25's, the information you quoted out of context from me is specific to 1996-1998 and some 1999 EJ25's.

the only way to get the 95 EJ22 to work...and i don't recommend trying it without lots of patience and ability to work around issues, would be to strip the 1995 intake manifold harness and swap your entire engine harness from your 2003 intake manifold onto the 1995..including fuel injectors and fuel rails if necessary. but then you run into the idle air control issue since they are different designs. i haven't done it enough to know how repeatable it is, if there are differences, etc.

2003 is also MAP sensor instead of MAF sensor so you'll drop the 95...

and might have to install the 2003 passengers side cam and crank sprocket on the EJ22 but that's easy.

Edited by grossgary, 03 November 2012 - 08:20 AM.

[eweisner]

One more question. I have found two engines a 2000 Impreza 2.2L and a 2002 Impreza 2.5L. Which one is my best option?

[porcupine73]

Hm all other things being equal, it seems like the 2.5L would be the most straightforward installation. It looks like per Gary's info you could use the 2.2L though as well if that's what you really wanted to use. Make sure to check out Gary's must have's, like if your engine has EGR replacement engine needs EGR.

[grossgary]

One more question. I have found two engines a 2000 Impreza 2.2L and a 2002 Impreza 2.5L. Which one is my best option?

it's a toss up at this point. mileage, maintenance history, price, how many owners for each one - headgaskets done on the EJ25?

00-02 EJ25's had an extended 100,000 mile headgasket warranty and many were repaired by Subaru - so one could inspect the heads and see if the headgaskets were already replaced. Or look for service records, ask Subaru about the VIN. Of course that doesn't guarantee they'll hold and Subaru doesn't resurface them usually, but at least you would know.

Everything being equal - I would lean towards the EJ22 and install a complete timing belt kit - new pulleys and tensioner. I see no reason to intentionally introduce EJ25 headgasket issues to a car if you have a choice.

You need a single port exhaust header and then bolt EJ25 intake manifold to the EJ22. Swap the crank sprocket and drivers side cam sprocket when installing the new timing belt (it lakes 3 minutes, very simple, no extra work really).

*** NOTE - These are Phase II 99+ specific directions, this info is not accurate on older EJ swaps. Don't follow directions for older EJ22-Ej25 swaps.

If you get the EJ25, now is a good time to install new EJ25 Turbo headgaskets. These Phase II EJ's are easy headgaskets to install, particularly with the engine out of the car, that's the hard part.

[grossgary]

Make sure to check out Gary's must have's, like if your engine has EGR replacement engine needs EGR.

yes make sure both have EGR. or both don't have EGR.

it's easy to install an EGR engine into a non-EGR vehicle, but not the other way around.