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Old 09-01-2009, 06:09 AM   #1
joebush44
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Default What the heck is this? 257/205 Build Question HELP

A buddy and myself are now assembling the rest of my hybrid motor. We put the intake manifold on and noticed an extra inlet/outlet coming from the block. It is right next to the seam of the block halves and back closer to the flywheel (see pics)
It is a brand new ej257 2.5l shortblock...ej205 2.0l heads. I looked at the 2.0 block and there isnt this "thing" protruding out of the top of the block. What is supposed to go to that? Can I just plug it? Did i miss something?? What gives

In the red circle...whats that??


Doesn't have it here on the 2.0...


Another shot with the intake manifold on from the back looking over the flywheel...goes to nothing but strait into the BPV return hose to the turbo inlet...


HELP
Thanks guys
Not sure if this is the right place to post, but it is a hybrid build after all
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Last edited by joebush44; 09-01-2009 at 06:21 AM.
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Old 09-01-2009, 08:16 AM   #2
scprs
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I want someone to answer this two.... im finishing my hybrid now.
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Old 09-01-2009, 08:42 AM   #3
ownnij
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most people just block it off. it's just another crank vent i believe.
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Old 09-01-2009, 08:57 AM   #4
scprs
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sorry for kind of thread jackin but this is a good question.

So if you are using a catch can would you T those two top breather ports?
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Old 09-01-2009, 09:00 AM   #5
Charlie-III
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Quote:
Originally Posted by ownnij View Post
most people just block it off. it's just another crank vent i believe.
Yes, it's another crankcase vent. It's a light press fit in, I pulled mine out and JB welded a cap over the hole when doing my NA build with DOHC heads in my Legacy.
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Old 09-01-2009, 10:20 AM   #6
Twiztidunreal
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i took and t-ed it with the pcv breather and ran those to my one catch can, then of course the heads are already t-ed together into another catch can..
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Old 09-01-2009, 10:27 AM   #7
scprs
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I thought the pcv was to be blocked off? guess it wouldnt hurt anything.
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Old 09-01-2009, 12:31 PM   #8
joebush44
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I was thinking it was just a breather...
So, this can just be blocked off with no problems?
If so, what would be the best way to do that?
Thanks for the help everybody!
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Old 09-01-2009, 12:39 PM   #9
kellygnsd
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Quote:
Originally Posted by Twiztidunreal View Post
i took and t-ed it with the pcv breather and ran those to my one catch can, then of course the heads are already t-ed together into another catch can..
You need to be careful if you tee both together. One vent is baffled, the other is not. If you have them both tied back into your intake its very easy to suck up oil through the unbaffled vent. If you don't have STi heads to plumb it right most just cap off the center one.
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Old 09-01-2009, 01:22 PM   #10
ownnij
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does anyone have the size of that vent? i want to go buy a plug at the hardware store on the way home.
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Old 09-01-2009, 01:54 PM   #11
kellygnsd
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I got the assorted plug plenty pack at my autozone that had the correct size. I don't know the exact size off hand though.
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Old 09-01-2009, 09:30 PM   #12
Twiztidunreal
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Quote:
Originally Posted by kellygnsd View Post
You need to be careful if you tee both together. One vent is baffled, the other is not. If you have them both tied back into your intake its very easy to suck up oil through the unbaffled vent. If you don't have STi heads to plumb it right most just cap off the center one.
o i know, exp. during a brake in....

my cans are VTA for now as my 35r doesnt have an intake
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Old 09-02-2009, 12:42 PM   #13
Thug Nasty
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I don't remember the size of it, but I plugged it.
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Old 09-02-2009, 04:51 PM   #14
Vmiz
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i believe it's a 5/8 freeze plug i use
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Old 09-03-2009, 04:26 PM   #15
jblaine
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FWIW, the EJ207 also has this additional crankcase vent, and I've had it T'd for 30,000 hard miles with no problem.
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Old 09-05-2009, 06:57 AM   #16
joebush44
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I see, good info here...i ended up just capping it with a metal cap and ample JB weld - flipped the motor over (on engine stand) and let it set overnight. Done.
Thanks all
Hopefully this doesn't cause any problems
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Old 10-09-2009, 06:31 AM   #17
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whats the pros and cons of removing this part off an sti?
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Old 10-09-2009, 02:42 PM   #18
Maxwell Power
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5/8 freeze plug.

Pull the nipple out with vice grips. Get a 5/8" freeze plug from napa/advance/shucks/carquest and push it in.

/thread.

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