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Old 06-03-2007, 12:16 PM   #1
crusher145
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Unhappy STi spun rod bearing rebuild part list.

So long story short my '04 STi threw a rod bearing yesterday on the front driver's side cylinder (not sure what cylinder # this is). Started hearing the dreaded knocking noise, and began pulling injector harnesses to see if the noise went away. Sure enough, the noise disappeared as soon as I pulled one of the harnesses. Drained the oil and it was filled with tiny metal shavings.

Some things worth noting...
The engine only has 8,500 miles. It was in a front end collision and didn't run for over two years. It threw a rod bearing 110 miles after I got it running again.

I am trying to put together a list of everything I will need to do a basic rebuild correctly. So far I have:

- New 2.5L short block from Subaru - $1700
- Engine gasket/seal set - $216
- Cosworth modified oil pump - $240
- New oil pickup - $20
- ARP headstuds - $180

Is there anything else I should add to the list? Anybody know the cheapest place to find a new short block? Best I have found is $1771 shipped.

As far as the heads go... Is there anything I can do to make sure no metal shavings made it into the heads? Should the valve seals or anything be replaced after throwing a bearing?

The timing belt only has 110 miles so I am planning on reusing it.

Any help is appreciated.
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Old 06-03-2007, 12:56 PM   #2
flycaster
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Make sure everything is flushed - heads, turbo, all oil lines. $1771 shipped sounds pretty darned good to me.

Just out of curiosity - did the motor slam to a stop while in gear during the collision?
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Old 06-03-2007, 01:13 PM   #3
root
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Quote:
Originally Posted by crusher145 View Post
front driver's side cylinder (not sure what cylinder # this is)
Front driver's side is cylinder #2. Front passenger is #1, rear passenger #3, rear driver #4.
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Old 06-03-2007, 04:15 PM   #4
crusher145
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Quote:
Originally Posted by flycaster View Post
Make sure everything is flushed - heads, turbo, all oil lines.
What is the best way to do this? Just pour a bunch of oil through them?

Quote:
Just out of curiosity - did the motor slam to a stop while in gear during the collision?
I am not sure exactly, but it is very possible. I bought the car after it had been stolen and wrecked (looking back this wasn't the best decision I have ever made). The collision was solid enough to break the rear half of the driveshaft and slam the yoke about 3/4 of an inch onto the output shaft of the tranny.
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Old 06-04-2007, 08:16 AM   #5
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^^^hmmm - sounds like, and now looks like it should have been a gonner. Better luck now.
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Old 06-04-2007, 10:38 AM   #6
crusher145
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Engine is coming out today.

Ordering a shortblock and the rest of the stuff once I confirm nothing catastrophic happened to the heads. Hopefully it will be back on the road here shortly.
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Old 06-04-2007, 12:59 PM   #7
crusher145
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Default Where could these have come from?

So.....

I started pulling the motor this morning. I took a real close look at the oil that I drained from the block and I found some interesting items...

-A spring
-A washer
-A large chunk of metal

Pics:




How in the world did a spring and a washer end up in my oil?????
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Old 06-04-2007, 01:37 PM   #8
gabedude
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Looks like oil pressure regulator parts. Could be wrong, never seen the inside of a Suby block.
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Old 06-04-2007, 06:25 PM   #9
Zornorph
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dang!
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Old 06-04-2007, 06:36 PM   #10
dsm02c
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could be worse... my 07 hit a tree. Well I hit a tree in my 07. Poor car.
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Old 06-04-2007, 07:39 PM   #11
crusher145
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Got the engine out early this afernoon. Will drop the oil pan this evening or in the morning. Hopefully I don't find any more surprises.
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Old 06-04-2007, 08:04 PM   #12
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looks like a spring from an oil filter....
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Old 06-04-2007, 08:27 PM   #13
BigC
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You might save a $100 or so here: http://www.thekingofparts.com/servlet/Detail?no=4 although they're prices have jumped recently. I paid ~$1500 shipped two months ago.

I'm at a loss as to the spring and washer winding up in your oil :\
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Old 06-04-2007, 08:32 PM   #14
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It's hard to tell from the pics, but I had a similar chunk of metal stuck in the oil pickup tube, in my sti. We think it might have been a piece of flashing from inside the oil pan.
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Old 06-04-2007, 08:41 PM   #15
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Weird! I just pulled the motor out of my 06 wagon, after pulling off the right side head,(the left was already off) and flipping the motor over to pull the oil pan, this same piece of metal fell out of my block from somewhere. I will get a picture. looks identical to the one pictured above.
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Old 06-04-2007, 09:00 PM   #16
crusher145
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OK guys... I am at a real loss now. Oil pan looks pretty good to me. A few tiny little metal flakes, but nothing that looks like a thrown bearing.

Here's a few pics:






My buddy's WRX threw the #3 rod bearing around 1.5 yrs. ago and my oil pan looks nothing like his did. Here is a pic of his:



Very confused right now.
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Old 06-04-2007, 09:14 PM   #17
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Quote:
Originally Posted by BigC View Post
You might save a $100 or so here: http://www.thekingofparts.com/servlet/Detail?no=4 although they're prices have jumped recently. I paid ~$1500 shipped two months ago.
Thanks for the link. Cheapest I have found so far.

Quote:
Originally Posted by jays05 View Post
It's hard to tell from the pics, but I had a similar chunk of metal stuck in the oil pickup tube, in my sti. We think it might have been a piece of flashing from inside the oil pan.
Quote:
Originally Posted by diamondsplitter View Post
Weird! I just pulled the motor out of my 06 wagon, after pulling off the right side head,(the left was already off) and flipping the motor over to pull the oil pan, this same piece of metal fell out of my block from somewhere. I will get a picture. looks identical to the one pictured above.
Very interesting guys. I have an idea as to where my chunk came from.... When the car was wrecked the oil cooler ripped off of the block and took half of the threads in the block with it. I used an external oil cooler adapter as a ghetto fix, but I am thinking the chunk might have originated from that area. I'll post some pics later to help explain what I am talking about.
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Old 06-04-2007, 09:21 PM   #18
diamondsplitter
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IMG]http://i194.photobucket.com/albums/z177/sirtony31/3500142.jpg[/IMG]

IMG]http://i194.photobucket.com/albums/z177/sirtony31/3500142.jpg[/IMG]

You can see where it came from in the pics now. Edit: how do I post these in the body?
Edit #2. Thanks Crusher

Last edited by diamondsplitter; 06-04-2007 at 09:34 PM. Reason: Got it.
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Old 06-04-2007, 09:26 PM   #19
jays05
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^ wow, that's the same type of metal chunk that came out of my pan! painted black with the edges worn down...
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Old 06-04-2007, 09:27 PM   #20
crusher145
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Quote:
Originally Posted by diamondsplitter View Post
Edit: how do I post these in the body?
Just copy paste the IMG Code that is underneath the thumbnails in your gallery.


That cunk does look VERY similar to the piece that came out of my block. I will go take a look at my oil pan now to see if it might have come from the same place.
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Old 06-04-2007, 09:28 PM   #21
diamondsplitter
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See where it came from? Broke off just below the tab that is spot welded in the pan.
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Old 06-04-2007, 09:38 PM   #22
diamondsplitter
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It there a reason I can only post 1 picture at a time or am I doing something wrong?
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Old 06-04-2007, 09:39 PM   #23
jays05
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Here's what was in my oil pan / pickup tube.

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Old 06-04-2007, 10:00 PM   #24
crusher145
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Quote:
Originally Posted by diamondsplitter View Post
It there a reason I can only post 1 picture at a time or am I doing something wrong?
Your tags are a little screwed up it looks like.

Anyway, my pan looks pretty good. Could have come out of the oil pan that was in the wreck though I suppose.
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Old 06-05-2007, 02:21 PM   #25
crusher145
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Well, it seems like all of the bearings are still there. Nothing looks out of the ordinary. I am debating throwing the engine back in the car to do a compression check to see if maybe the noise was related to something with the piston ring....

The spring and washer came from my oil cooler adapter. You can see the adpater, and the washer in the pic on this LINK
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