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Old 08-07-2013, 02:27 AM   #1
CBoldman
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Default 2009 Forester 2.5 x blown engine

Hi everyone,

I have the opportunity to purchase a 2009 Forester 2.5 x that has a blown engine. It sounds like the previous owner ran the oil dry...

Anyway, I haven't worked on a Subaru in several years and if I move forward with this project it will be my first N/A Subaru.

The vehicle has 100k miles on it and I was thinking of just picking up another engine to swap. I'm not even sure what the engine code is (EJ254?)...

Should I stick with an engine from the same model year or could I pick up the same engine that was once in a different vehicle (Impreza or Outback?)?

Any help would be appreciated. It looks like junk yards are selling Forester engines for around $2k.
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Old 08-07-2013, 08:58 AM   #2
Bluefoton
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now with a HID retrofit

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The car has a EJ253 - which was the engine in 06-11 Imprezas, and 06-10 Foresters (2011 models switched to FB25). Onviously the newer, the better - and keep in mind that these engines commonly blow head gaskets (roughly around 100k miles). I'd have them changed pre-emptively before bolting the motor into the car..
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Old 08-07-2013, 08:59 AM   #3
Patrick Olsen
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I'm pretty sure you should be able to use any of the EJ25s from similar model years, as they'll all be the same (Legacy, Outback, Impreza and Forester).

Quote:
Originally Posted by Bluefoton View Post
... and keep in mind that these engines commonly blow head gaskets (roughly around 100k miles). I'd have them changed pre-emptively before bolting the motor into the car.
They do? Can you provide any data on that?
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Old 08-07-2013, 09:19 AM   #4
Bluefoton
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now with a HID retrofit

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I know where you're going with this

Fine, let me rephrase: my sentence is based on a perception of selectively-picked NASIOC threads, representing an skewed minority subset of Subaru owners (people who dont have problems dont post about it), along with my own experience which further adds to the bias (i had an issue therefore it's common), and I generalized from a few instances where HGs blew around 100 000 miles (3 cases definitely define a statistical mean).
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Old 08-07-2013, 01:35 PM   #5
Patrick Olsen
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Well, it's more than just that. Subaru specifically targeted early years of the SOHC EJ25s with preventive maintenance and extended warranties. AFAIK none of that has ever been put in place for the newer engines, which to me means that Subaru has largely addressed the issue.

6 or 8 years ago there were tons of HG threads on this forum. Now there don't seem to be nearly as many. Admittedly, that's just as subjective as your perception, but mine is more better because I've been here longer.
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Old 08-07-2013, 03:15 PM   #6
Bluefoton
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now with a HID retrofit

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See, that's what I wonder as well. Part of it is I guess that there isn't a large cohort of 100k miles EJ253s on the street... yet. The HGs remained the same, but from what I know an underlying cause of the single-layered HG failure (allegedly excessive coolant acidity) was somehow adressed by a more strict coolant-replacement maintenance schedule. The additive, though mandatory, is merely a clog - so I'd argue that it prevents the symptoms from appearing, not the damage from occuring.
Is there anything that has changed in the EJ253 over the EJ251 that'd save the gaskets from blowing early?
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Old 08-07-2013, 09:42 PM   #7
CBoldman
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Do I need to find an engine that is PZEV or will any EJ253 work?
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Old 08-08-2013, 08:15 PM   #8
kero
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Have you given thought to swapping in a wrx engine? There more work involved but if you're gonna swap in an engine and go through the expense and time, why not get the extra bonus of more power
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