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Old 04-30-2010, 11:33 AM   #1
DJTWRX
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Lightbulb DJTWRX's EJ255 Build

You mad bro?
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Last edited by DJTWRX; 11-14-2011 at 06:52 PM.
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Old 04-30-2010, 12:03 PM   #2
RealStreet
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Who tuned it?
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Old 04-30-2010, 01:37 PM   #3
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Quote:
Originally Posted by RealStreet View Post
Who tuned it?
Matt Miner tuned the car most recently (a year ago or so) but before that I was running the latest revision of the Cobb Stage 2 map for my model year WRX.

I seriously doubt there was an issue with Matt's tune but I really don't know at this point. I'm still waiting for the results of the motor tear down.
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Old 04-30-2010, 03:19 PM   #4
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The car had a catastrophic failure, at first it seemed like it jumped timing but after some investigation im more inclined to believe a wrist pin let go....well see when we get the motor out of the car.

There will be pics, oh yes, there will be pics.

M@
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Old 05-03-2010, 11:23 AM   #5
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The engine is coming out today.
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Old 05-03-2010, 11:36 AM   #6
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Sounds like my issue. My 02 WRX had a serious catastrophic failure at 123k miles with stock turbo. Within a week my car went from perfectly fine to absolutely dead. We pulled the motor last week and found numerous problems- lots of piston side to side movement, uneven boring, factory honing gone, horrible leak down results. I was burning about a quart and a half within 150 miles.

EJ257 SB went in and is almost complete.

Good luck with your build and keep us posted.
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Old 05-04-2010, 07:21 PM   #7
DJTWRX
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Default Damn those Subaru OEM Cast Pistons!





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Old 05-04-2010, 07:27 PM   #8
DJTWRX
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Default The heads look clean.





... but they still have to go out to the machine shop.
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Old 05-04-2010, 07:30 PM   #9
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Default Engine out.

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Old 05-05-2010, 10:28 AM   #10
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The piston pics have been posted. The build pics will be coming soon.
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Old 05-05-2010, 10:32 AM   #11
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How do the valves look on the combustion side?
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Old 05-05-2010, 11:34 AM   #12
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Quote:
Originally Posted by Ryan314 View Post
How do the valves look on the combustion side?
Surprisingly they valves weren't that bad considering how the piston looked. There was some noticeable marks but nothing the machine shop can't handle. I apologize for not getting any photos of the valves.

The machine shop will make the final determination but I'm pretty sure the valves will be fine.
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Old 05-06-2010, 09:27 AM   #13
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dude, u're getting me worried, i'm on a 20g @ 87,000 miles with my 06 wrx stock block, can't knock on wood cuz my damn desk is metal!!!!
I plan on building it anyways and probably in the same direction as you, great selection of parts by the way. How much did you spend on the build so far? if you dont mind me asking.
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Old 05-06-2010, 10:24 AM   #14
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Quote:
Originally Posted by al82 View Post
dude, u're getting me worried, i'm on a 20g @ 87,000 miles with my 06 wrx stock block, can't knock on wood cuz my damn desk is metal!!!!
I plan on building it anyways and probably in the same direction as you, great selection of parts by the way. How much did you spend on the build so far? if you dont mind me asking.
Haha! Sorry man. It's not me it's the pistons!

I have a rough idea of what it will all cost but not a total at this time.

The truly sad part is that my car was very well maintained. The guys at Wicked Innovation said the motor was one of the most clean they have seen (internal/external). These OEM pistons can fail even if the car is properly maintained.
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Old 05-06-2010, 10:53 AM   #15
RealStreet
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Quote:
Originally Posted by al82 View Post
dude, u're getting me worried, i'm on a 20g @ 87,000 miles with my 06 wrx stock block, can't knock on wood cuz my damn desk is metal!!!!
I plan on building it anyways and probably in the same direction as you, great selection of parts by the way. How much did you spend on the build so far? if you dont mind me asking.

Dont be that worried, my GF has over 91k miles on her stock motor 06 WRX with an FP Green
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Old 05-06-2010, 11:21 AM   #16
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Quote:
Originally Posted by DJTWRX View Post
Haha! Sorry man. It's not me it's the pistons!

I have a rough idea of what it will all cost but not a total at this time.

The truly sad part is that my car was very well maintained. The guys at Wicked Innovation said the motor was one of the most clean they have seen (internal/external). These OEM pistons can fail even if the car is properly maintained.
Cool i know man s*** happens...goodluck with the build
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Old 05-06-2010, 11:25 AM   #17
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Quote:
Originally Posted by RealStreet View Post
Dont be that worried, my GF has over 91k miles on her stock motor 06 WRX with an FP Green
well every car is different i guess...
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Old 05-06-2010, 01:23 PM   #18
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Quote:
Originally Posted by RealStreet View Post
Dont be that worried, my GF has over 91k miles on her stock motor 06 WRX with an FP Green
I think it is "luck of the draw" with the Subaru OEM pistons.
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Old 05-07-2010, 09:38 AM   #19
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The ACL bearing kit seems to be back ordered everywhere. The Cosworth bearing kit is available but retails for roughly $80.00 USD more.

I've heard that the Cosworth bearings are simply ACL bearings in a Cosworth box that come with a Cosworth sticker.

Can anyone confirm or deny the rumor? I'd rather not pay $80.00 more for a Cosworth sticker.
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Old 05-07-2010, 03:04 PM   #20
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Quote:
Originally Posted by DJTWRX View Post
The ACL bearing kit seems to be back ordered everywhere. The Cosworth bearing kit is available but retails for roughly $80.00 USD more.

I've heard that the Cosworth bearings are simply ACL bearings in a Cosworth box that come with a Cosworth sticker.

Can anyone confirm or deny the rumor? I'd rather not pay $80.00 more for a Cosworth sticker.
Confirm...

The Subaru Rod Bearings are not onbackorder but the standard Main bearings are sold out for ACL, Cosworth, and Clevite
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Old 05-11-2010, 05:39 PM   #21
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Got an update from the machine shop ...

Both exhaust valves were bent by the piston that failed and the minor damage to the head was fixed.
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Old 05-11-2010, 05:57 PM   #22
dumpstercrusher
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just out of curiosity, how much is this all costin? I was thinking about building up my motor when time comes
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Old 05-12-2010, 11:33 AM   #23
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Quote:
Originally Posted by dumpstercrusher View Post
just out of curiosity, how much is this all costin? I was thinking about building up my motor when time comes
I am in the ballpark of $5,200.00 for parts alone. You could focus on the engine internals and rebuild parts and do it all for about $2500.00 or so.
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Old 05-13-2010, 01:30 AM   #24
dumpstercrusher
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Thats not bad to rebuild the internals, but at 93k would you consider using the same block? :P
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Old 05-13-2010, 06:00 PM   #25
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93K shouldn't matter as long as its straight and true (or has enough material to be machined). Many builders prefer used blocks as they've been heat cycled...
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