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Old 09-07-2010, 03:41 AM   #101
Pacemaker
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I haven't read through all the posts in this thread, so maybe someone else already mentioned this, and I could be very wrong about this but I think that one way of saving these engines is to install equal length headers ... Strange right? Not really if you think about it, since the runners are different lengths, this means they transfer heat differently, and because of the length of the runner on cylinder four, that cylinder will always run the hottest.

I don't know, just a thought, what do you guys think? The unequal headers and the tune causing problems? Tune to keep cylinder four running cooler or switch to equal length header to save the engines?
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Old 09-07-2010, 03:48 AM   #102
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maybe, but the runners being different lengths don't affect it that much, and i ahve seen the sti pistons fail with equal length headers.

the main culprit was over boosting
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Old 09-07-2010, 03:57 PM   #103
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Quote:
Originally Posted by erikm View Post
What does ringland failure and toasted clutch have in common?

Launches
It's all fun and games until it's yours. I hope karma doesn't catch up with you or you can just drive your STI like a little old lady which defeats the purpose of buying one in the first place. 04-06 STi handled stg 2 mods with very few broken engines. We are seeing stock engines, with stock tune losing pistons at 3000 miles and having multilple failures. My 02 WRX and 05 STi were both tracked, autocrossed, drag raced and driven hard daily with not a single failure of any component for 50-60k miles before I sold them. Both were stg 2. My 08 STI lost #2 and #4 after 5 autocross runs on a reputable stg 1 tune. The second engine went after 5 autocross runs on the stock tune, #4 ringland. Do you see a trend? #2 and #4 on 07+ STIs run lean and the ECU isn't protecting the engines. Quite blaming the owners for Subaru's poor product. Also, someone new to driving a stick can easily kill a clutch.

The only way Subaru is going to be able to safely meet EPA and CAFE standards is with direct injection.
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Old 09-07-2010, 04:30 PM   #104
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^^ Yup.

Sucks for y'all. Like I've said, my 04 STi endured more abuse than any car should have to. 24PSI daily on 93 octane. Autocross. Track days at high speeds and high heat. I made it 85K miles without any issues.

08+ are cursed!
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Old 09-07-2010, 06:40 PM   #105
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well they changed how they casted the pistons for the 08, its more for longevity not modability ( is what they thought )
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Old 09-08-2010, 12:09 AM   #106
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Quote:
Originally Posted by paulsaidhi View Post
well they changed how they casted the pistons for the 08, its more for longevity not modability ( is what they thought )
Do you have a source for this info?
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Old 09-08-2010, 12:24 AM   #107
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there should be a service article floating around. i remeber reading this back in 09
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Old 09-08-2010, 03:33 AM   #108
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Is this problem just effecting STI's, or are WRX's effected too?
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Old 09-08-2010, 07:33 AM   #109
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Originally Posted by paulsaidhi View Post
there should be a service article floating around. i remeber reading this back in 09
And they didn't fix the 2010's? If they know the pistons are defective

1. They would not put it in writing anywhere
2. They would have fixed the problem for late 09+ like they did with the 09 WRX bearings.
3. They would not put it in writing anywhere
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Old 09-08-2010, 07:36 AM   #110
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Is this problem just effecting STI's, or are WRX's effected too?
09 WRX had bad bearing.

All Subarus can have ringland problems if tuned incorrectly or you start pushing over 400 whp (that's generally the number thrown around though some have safely run higher). It isn't typical for cars with good tunes or 300whp.
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Old 09-08-2010, 07:46 AM   #111
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true...

Last edited by paulsaidhi; 09-08-2010 at 09:41 AM.
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Old 09-08-2010, 08:07 AM   #112
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Quote:
Originally Posted by paulsaidhi View Post
well they changed how they casted the pistons for the 08, its more for longevity not modability ( is what they thought )
Where do you have this info from? The piston part# didn't change from the first STi up to the MY10. (don't know about MY11)
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Old 11-26-2010, 01:16 AM   #113
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my 08 sti just went tits up, was just playing in the snow lightly and started knocking, took it into the dealer and found out the ecu was tuned???? Had no idea also had cobb catless dp, with perrin exhaust and intake ..... it voided the warrenty has 36k miles on it and I have no idea what to do now, buddy says take out ecu get it reflashed to stock maps replace dp with stock unit and take to different dealership. see if they get the warrenty to replace longblock however I noticed the guys at first dealership taking pics they must have sent them in to soa so not sure if another dealership would do any good. Help please!!!!!!
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Old 11-26-2010, 01:20 AM   #114
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Quote:
Originally Posted by EdaP79 View Post
my 08 sti just went tits up, was just playing in the snow lightly and started knocking, took it into the dealer and found out the ecu was tuned???? Had no idea also had cobb catless dp, with perrin exhaust and intake ..... it voided the warrenty has 36k miles on it and I have no idea what to do now, buddy says take out ecu get it reflashed to stock maps replace dp with stock unit and take to different dealership. see if they get the warrenty to replace longblock however I noticed the guys at first dealership taking pics they must have sent them in to soa so not sure if another dealership would do any good. Help please!!!!!!
Get ready to order some replacement parts?

These cars are not bulletproof and it's going to happen one day.
Gotta pay to play with these cars.
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Old 11-26-2010, 08:42 AM   #115
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Did thisvpiston issue follow into the my09 sti too? I'm trying to figure out why a dealer is selling a 2009 sti for 30k with 6k miles.
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Old 11-26-2010, 11:02 AM   #116
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Did thisvpiston issue follow into the my09 sti too? I'm trying to figure out why a dealer is selling a 2009 sti for 30k with 6k miles.
Yes it did. Insist on a leak down and compression test. Just for reference, I paid 30k for my 08 brand new and I just traded it in for 25,250. You can get a better deal.
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Old 11-26-2010, 05:08 PM   #117
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I called the dealership and told them I am not interested and they came down on the price a little. I'm just afraid that I'm going to buy into something that will cost a lot of time to have fixed and have my car down at a dealer (on the other side of town). I also like the fog light shrouds of the 2011 better. Overall the 2011 I have ordered is only 2k more, I don't think a used one that is likely to have problems is worth while.

Can someone telling me that I'm making a good decision here? please... before... I... buy... crap...
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Old 11-26-2010, 05:21 PM   #118
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the first thing i would do if i bought an 07-up sti would be to swap in a hydra. i bet it wouldnt have a problem then.
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Old 11-26-2010, 05:50 PM   #119
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I called the dealership and told them I am not interested and they came down on the price a little. I'm just afraid that I'm going to buy into something that will cost a lot of time to have fixed and have my car down at a dealer (on the other side of town). I also like the fog light shrouds of the 2011 better. Overall the 2011 I have ordered is only 2k more, I don't think a used one that is likely to have problems is worth while.

Can someone telling me that I'm making a good decision here? please... before... I... buy... crap...
I already answered your question. Ask for a compression/leak down test and you need to do some research on what it's actually worth. I wouldn't pay a dime more than 28k.

Get an AP on it before driving it hard or it will be expensive. Remove the AP before taking it for service.
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Old 11-26-2010, 06:04 PM   #120
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Quote:
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I already answered your question. Ask for a compression/leak down test and you need to do some research on what it's actually worth. I wouldn't pay a dime more than 28k.

Get an AP on it before driving it hard or it will be expensive. Remove the AP before taking it for service.
I read your statement, but I don't think these faulty sti's left the factory with bad compression rates....or did they?

So even if it checks out now, doesn't mean that it won't fail in 2k miles. I do have n ap.003, maybe a good thing to prevent...
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Old 12-08-2010, 08:54 PM   #121
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I have a 2011 STi on order from my local dealer. I have looked though this thread and haven't seen any 2010 or 2011 failures listed here. Probably way to early for 2011 failures.

Are there any Subaru Dealership mechanics that can give everyone some direct insight in to what is going on?
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Old 12-08-2010, 09:10 PM   #122
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2008 STI
20,000 miles

BOOM! Never on track.

New engine is in. Want answers from dealer, they will not return my emails.Contacting Subaru NA.
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Old 12-09-2010, 06:36 AM   #123
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Quote:
Originally Posted by s4dustin View Post
2008 STI
20,000 miles

BOOM! Never on track.

New engine is in. Want answers from dealer, they will not return my emails.Contacting Subaru NA.

Not exactly a lot of info....
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Old 12-09-2010, 06:37 AM   #124
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Quote:
Originally Posted by krinkle View Post
I have a 2011 STi on order from my local dealer. I have looked though this thread and haven't seen any 2010 or 2011 failures listed here. Probably way to early for 2011 failures.

Are there any Subaru Dealership mechanics that can give everyone some direct insight in to what is going on?
There is a ton of info out there explaining many of the contributing factors and issues.
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Old 12-09-2010, 11:00 AM   #125
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Quote:
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There is a ton of info out there explaining many of the contributing factors and issues.
He is talking about you specifically. They want details as to your personal experience.
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