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Old 01-20-2013, 12:56 AM   #1
subsf
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Member#: 337710
Join Date: Nov 2012
Chapter/Region: BAIC
Location: Bay Area, California
Vehicle:
2000 Impreza 2.5RS
Blue Ridge Pearl

Default Presumed oil leak from rear of engine.

I've got here a N/A EJ25 from a 2000 Impreza.
Bought it off a fellow, so I don't know the stories behind the motor.

In the back, there seems to be an oil leak. As you can see here:



I'm making an assumption and guessing it's from here:



To me it doesn't look like it's from the oil separator plate, nor the rear main seal. But then again, I'm not what you'd call a professional.

1. What is that blue-circled piece called? I'll need to know if it so happens I need to replace it.

2. Is the leak even from that piece? What's it look like to you, folks?

Thanks for your help!
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Old 01-20-2013, 09:31 AM   #2
Elbert Bass
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Join Date: May 2011
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Location: South East TN
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1995 Chevy S-10
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Access cover for removal of #4 wrist pin. Sealed with an o-ring. Remove the two #3 phillips screws and replace the o-ring to fix. Usually the screws are too tight for hand removal. Best way to remove the screws is with a 3/8" drive HAND impact driver (the kind you hit with a hammer) and a #3 phillips socket.

Yes, that appears to be the source of the leak.
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Old 01-20-2013, 11:18 AM   #3
mod maniac
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Member#: 300551
Join Date: Nov 2011
Chapter/Region: SCIC
Location: mariposa ca.
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2&4 fxt & fxt sti
Fullers Garage

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^^^ I agree with Bass but I would do it all while it is out.
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Old 01-20-2013, 11:44 AM   #4
monkeyposeur
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Location: SLC, UT
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93 SS
Black Pearl

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I would also replace the oil separator plate just in case. They used to be plastic then they changed to a metal plate and then redesigned it again, exactly when I forget. I would get the latest design just to be safe since the motor is out anyway.
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Old 01-20-2013, 11:45 AM   #5
geronimo81
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1996 Turbo Outback
9psi on 91 No EM

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Yep, do all three just to be safe and sure.
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Old 01-20-2013, 01:28 PM   #6
Elbert Bass
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I'd leave the separator plate alone. It is sealed with Fujibond and with that metal plate it is unlikely to leak.
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Old 01-20-2013, 03:14 PM   #7
Subieformance_Guy
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480@30psi Subarus-R-Us

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The rear plate is def a notorious cause of rear oil leaks. Remove both and put a good bead of silicone on them and they will be fine. Trust me dude Ive done prob 100 of them
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Old 01-20-2013, 04:11 PM   #8
subsf
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Blue Ridge Pearl

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Thanks, scoob fam! (love ya guys)

Especially thanks for the removal instructions, I quickly avoided the screwdriver in fear of stripping the screws.

Wrist pin! I knew there was "pin" in there somewhere. Google & Nasioc searches didn't quite get that.

And I agree with Elbert Bass, the separator plate is pretty beefy, and there's minimal leakage. Actually, it's probably all from the access cover for the wrist pin.

But most definitely doing it all while it's out.
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Old 01-21-2013, 10:17 AM   #9
monkeyposeur
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It's just a preventative measure. The plastic separator plates were the worst. And if they redesigned the metal one again Subaru must have had a good reason.

Plastic vs. Latest model:


New Sep plate installed on my stock 22T. It's hard to see because I have the flex plate back on, but you can definitely see it doesn't look like your old plate:
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