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What's the REAL Story on Failing Turbos?


whtmike2k

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I've read on these boards, and online elsewhere, about the failing turbos (and the ensuing engine destruction it causes!) on the Legacy GT's.

 

I'm in the market right now, and found a '05 GT wagon I really like. The dealer doesn't have/can't provide me with a full service history, though he assures me "it's been babied and cared for since day 1!!" :rolleyes: to his credit though, it is a one-owner car.

 

The mechanics and other dealerships i've talked to about a prepurchase inspection all echo the same thing - as long as the oil has been changed every 3-4k miles, I should be fine. They say only reason for turbo failure is lack of regular oil changes (going 5-6k+ between changes). They all quote me $75 or so for a pre-purchase inspection, and $200+ if i wanted them to take the turbo off and see if it's in good shape or if it's been replaced.

 

 

SO what's the real story with the turbos on these engines? What should I look for? Car only has about 55k miles on it. I just don't want to get it home, put 5,000 miles on it and then it dies.

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From browsing these forums, I find that the main cause of stock turbo death in these cars is the oil pick-up line breaking, causing oil starvation to the turbo.

 

http://legacygt.com/forums/showthread.php?t=78603&highlight=oil+pickup

 

Yes, that happens, too, but it usually kills entire engine (since the whole oil supply is cut). It's not nearly as common as plain vanilla turbo failure.

 

My take is this: the turbo dies, because it's crappy, particularly the VF40 in MY05 and due to poor maintenance (long OCIs, cheap dino oils) do not help. It's not scientific evidence, but MY06+ failures seem to be much less frequent. The turbo part # has changed, so the part was revised for MY06 (plus in MY07 a different turbo, VF46, was introduced)

 

I believe the banjo filter clogging is usually the result of turbo failure, not a cause of it. The dying which sends debris into the engine. People with failed turbos "tend to drive home". Subsequent shoddy repair that does not involve cleaning the oil sump and more importantly the oil cooler that traps debris and cannot be cleaned.

 

My advice: do not even touch cars with replaced turbos. Cars with engine replaced are also suspect, because I bet 99% of repairs do not include new oil cooler. There are several stories of repeated turbo/engine/turbo/engine failures.

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If you worry about turbo failure - don't buy turbo.

 

But it's a lot less fun without a turbo.

 

So have a check of the banjo bolt and the oil feed pipe. The price for that is small compared to the annoyances and costs related to a toast engine and turbo.

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Outback yes, it is after all a Subaru Legacy Outback.

WRX completely different motor and turbo.

You'll get some different opinions on this issue. Personally I say that as long as you keep up with oil changes, use a quality oil, inspect/replace/service the banjo bolt, the likelyhood of the turbo failing are slim.

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Yes, that happens, too, but it usually kills entire engine (since the whole oil supply is cut). It's not nearly as common as plain vanilla turbo failure.

 

My take is this: the turbo dies, because it's crappy, particularly the VF40 in MY05 and due to poor maintenance (long OCIs, cheap dino oils) do not help. It's not scientific evidence, but MY06+ failures seem to be much less frequent. The turbo part # has changed, so the part was revised for MY06 (plus in MY07 a different turbo, VF46, was introduced)

 

I believe the banjo filter clogging is usually the result of turbo failure, not a cause of it. The dying which sends debris into the engine. People with failed turbos "tend to drive home". Subsequent shoddy repair that does not involve cleaning the oil sump and more importantly the oil cooler that traps debris and cannot be cleaned.

 

My advice: do not even touch cars with replaced turbos. Cars with engine replaced are also suspect, because I bet 99% of repairs do not include new oil cooler. There are several stories of repeated turbo/engine/turbo/engine failures.

 

 

so you really wouldn't buy one with a replaced turbo (that's what this legacy has, apparently). Hmm. I didn't think about the residual effects of a failed turbo.

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I have almost 70k on my 05 gt and never had any problem with my turbo. Im stage 1 at 16 lbs boost. I really think it is putting to much aftermarket parts in and pushing the turbo way past its working capasity. It is just like i have heard fucktards brake cars, not the car itself.
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