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Old 09-24-2015, 05:39 PM   #51
mishapopa
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Quote:
Originally Posted by Pracata View Post
Damm this is crazy
meh, infant mortality

https://en.wikipedia.org/wiki/Bathtub_curve
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Old 09-24-2015, 05:57 PM   #52
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Originally Posted by Berkalurk View Post
Model/Year: 2015 wrx limited with nav/hk and push start

Mileage: 7000

EM: stock

Mods: none

Fuel: 93

Oil: dealership changed

Circumstances: was parked all day. No CEL. Came to car after work and wouldn't crank. Towed to dealership.

Actual engine failure: was told that the engine was seized despite being full on oil. Long block was taken out and shipped to SoA. New long block from SoA put in. Currently is back at dealership for slow long cranks.
No CEL or any pre symptoms? That is crazy. I bet you never even find out what happened. Sorry man. At least you got a whole new long block and they did not try to tear the engine down and fix what may or may not have been the issue. If that is even any consolation.
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Old 09-24-2015, 06:00 PM   #53
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Everyone hurry up and sell your 15/16's they are all going to blow up!!! We have like 10 reported failures!!! These cars are CRAP!
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Old 09-24-2015, 06:09 PM   #54
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Everyone hurry up and sell your 15/16's they are all going to blow up!!! We have like 10 reported failures!!! These cars are CRAP!
LOL, this happens in every car forum I have ever been on. Maybe I can convince my wife that I need to sell my WRX for a Porsche because the car is not safe to drive as it might explode.
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Old 09-24-2015, 06:17 PM   #55
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LOL, this happens in every car forum I have ever been on. Maybe I can convince my wife that I need to sell my WRX for a Porsche because the car is not safe to drive as it might explode.
Definitely! Tell her like all these intelligent folks that you need to get rid of it because a few guys on some random ass forum (half of which had mods and or running E85) blew their engines. Therefore all of them are ticking time bombs and are just waiting to blow up.
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Old 09-24-2015, 07:23 PM   #56
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I dont remember anyone saying that without mods they are going to explode.

However, this is a powertrain forum so its safe to say that the majority of people using this forum are interested in modifying their cars for more power.

Yes it is a very small sample size and people only report engine failures not hey my engine is running great. Its just each day the engine failures seem to have less and less mods.

Sure you can always find a cause for what went wrong but there doesnt "seem" to be much of a safety margin. And the safety margin is exactly what you are after when looking to push things past the way they were delivered.
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Old 09-24-2015, 07:35 PM   #57
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It does make you wonder though, why did Subaru stick with the EJ on their flagship STi?

If I'm not mistaken, even overseas they still use an EJ20 in the STi.
They changed up the body, suspension, frame everything about this vehicle has changed. Now put into account if they also changed the engine in the STI and then gave it to Subaru Rally Team and tell me if you think damn... that is a lot on their plate at once. The subaru rally team already had to figure out the whole new body and dynamics of the vehicle and build and buy new parts. When subaru does another body change that is close to what we have now they will throw in the FA motor.
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Old 09-24-2015, 07:42 PM   #58
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Lots of stuff going on in here, can't wait to see more data.
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Old 09-24-2015, 07:49 PM   #59
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Originally Posted by raven1231 View Post
Definitely! Tell her like all these intelligent folks that you need to get rid of it because a few guys on some random ass forum (half of which had mods and or running E85) blew their engines. Therefore all of them are ticking time bombs and are just waiting to blow up.
Yeah... well, let's look at some other failures I know about after doing some research.

I guess the water pump impeller grenading and causing the motor to overheat and blow on a car was because the owner put an exhaust on the car?

The timing belt guide tensioner pins popping out of the block and slacking the chain which caused the chain to jump and pistons to hit valves, that's because the car was modded too, right?

The oil gallies in the timing cover being clogged by fuji bond from the factory and causing the engine to oil starve then seize or get rod knock, that's because the car was modded too? Looks like that's what probably happened to

The cam sensors that continually go out on these motors, isn't an issue from subaru... hey you modded the car that's why they are bad.

Not to mention the random complete ECU failure that a TSB is out for, but hey, it was modded.

Hmmm, I guess ignorance is bliss.

All these scenarios have happened and I wished more people would talk about it. This engine is of a fairly new design, I'm sure there are a lot of things that still need to be figured out by design engineers and factory assemblers, as well as the techs at dealerships.

These failures are not cut and dry like with EJ's, I don't recall this many issues with them, I haven't seen a clear cut case (yet) that lead to negligence of a tuner or mods done to the car, not like with EJ's.
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Old 09-24-2015, 09:31 PM   #60
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e85 e-tunes without flex fuel is absolutely tuner/owner negligence IMO. and most of the scenarios you described would be tough to say its not due to an ecu tune.

Water pump failed? Increased power means increased heat water pump couldn't keep up.

The higher redline on the ecu tune cause the timing chain to fail.

I can go on for every point.

EJ failures are a dime a dozen, this motors are just much newer and have sporadic failures of different types.
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Old 09-24-2015, 09:38 PM   #61
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It's probly because pistons are cast and weak
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Old 09-24-2015, 09:39 PM   #62
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It's probly because rods /pistons are cast and weak
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Old 09-24-2015, 11:06 PM   #63
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They are not that weak. Consider a handcrafted CLA45 AMG 4 cylinder is making 355hp at the CRANK and there are dudes here pushing that and more on a mostly stock engine at the WHEELS.

I think that's part of the problem. People buy these cars and expect 300-400+ horsepower and loads more torque on a mostly stock motor.

The stock motors going bellyup are few and far between so far. Not saying it doesn't happen, but you gotta pay to play.
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Old 09-24-2015, 11:11 PM   #64
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Originally Posted by raven1231 View Post
Everyone hurry up and sell your 15/16's they are all going to blow up!!! We have like 10 reported failures!!! These cars are CRAP!
Well, they're not the Golden Childs everyone was making them out to be. They too have their limits.

Last edited by MaddMax; 09-25-2015 at 12:37 AM.
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Old 09-24-2015, 11:17 PM   #65
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They are not that weak. Consider a handcrafted CLA45 AMG 4 cylinder is making 355hp at the CRANK and there are dudes here pushing that and more on a mostly stock engine at the WHEELS.

I think that's part of the problem. People buy these cars and expect 300-400+ horsepower and loads more torque on a mostly stock motor.
^Exactly! The WRX is using an $2,100 (retail) short block. The AMG CLA45 short block is around $9,200. The WRX should be able to handle 350-400hp easily, right? Am I right?
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Old 09-24-2015, 11:38 PM   #66
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I still think a lot of nah sayers to this thread are missing the point. If we can accumulate a mass collection of data for the platform, we can start to find the weak parts in the system. This information could then be utilized by performance shops to develop products to answer the need to problems SOA doesn't care about, because they do not effect stock vehicles. I don't think this about cry babies who modded their car and now blame Subaru for blown motors. It would be nice if we could keep this discussion on point, so we can focus on taking this platform to the next level. .02
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Old 09-24-2015, 11:54 PM   #67
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this is fkd up indeed. can't believe we invest this much $$ and this crap happens. I already know 1 person that had the dealer buy it back because it kept leaving him stranded on the fwy and went to dealer about 9x in about 3 months... sucks.
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Old 09-25-2015, 01:14 AM   #68
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Vader I was in the FB group when you brainstormed this idea. As much as I appreciate it I think you should've made it into a FB group. As much as I love coming here for info I appreciate the way they stick to the topic over there alot more.......

If you don't mind a suggestion, I'd like to know from future posters that weren't on the dyno when the car went how hard they were pushing the car. I've read how many people take these cars to 6500-7k daily which is insane to me for an engine you plan on keeping & maintaining for years to come.
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Old 09-25-2015, 08:52 AM   #69
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My motorcycle makes 186bhp per liter (at the wheel... tuned) and it goes to 16.5k rpm pretty much very time I ride it, do I expect it to last me years? Yes I do. Redline on a car is significantly lower than the point of damaging an engine. Engines really aren't weak, there are plenty of people who get in their WRX and simply floor it the second the turn it on and you'll probably find it'll last 200k miles (I wouldn't do this).

Tuning engines has risk, a large knock event can snap a rod instantly, on any engine.

Just an FYI, I use the entire rev range of my WRX every time I get in it also, but mine is stock and is staying that way.
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Old 09-25-2015, 09:11 AM   #70
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These threads are without a doubt useful. All I'm saying is jumping to ridiculous conclusions based a a minority of owners is comical. These engines are relatively new, but they have been used in the 86 platform for some time and have proven themselves to be very stout engines.

People saying they don't remember ej's having these issues, well that's because they are effin ancient by now. The sad reality is given that they are still having the same damn problems every model year. Given the type of car/owners that come with the WRX and that it is a relatively new platform there will be some failures, however this is far from proving that these engines are anything less than reliable. This is to be expected with any car, especially sports cars...
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Old 09-25-2015, 09:17 AM   #71
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There are a ton of factors at play that some of us never find out about. I have seen two STI's die recently and both of them had their engine die due to the gas station watering down their gas. The dealer suspected it was gas (it was the same gas station and dealership for both cars) and had the gas analyzed and sure enough it came back as the root cause. I wonder how many cars have gone and the dealership never analyzed the gas for octane level? Most people might blame it on the engine if they did not have the supporting data.
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Old 09-25-2015, 10:12 AM   #72
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Facts and information are awesome. Opinions are a coin flip. Like someone said earlier; when you mod a new platform YOU get to discover the problems...WHY YOU MAD BRO? Auto manufactures do not build a car and say "hmmm okay will this survive modding... idk lets test it... oh wait I cant its new, there are no parts!" Quit expecting manufactures to predict our every move. They built this car the way it is and it lasted for them so they sold it to us. Thats why there's a warranty! If you're too impatient to wait til then to mod..."you have to pay to play."

Just needed to vent a bit.

Keep posting failures and educating the community, but don't give your opinion on a failure without facts to back it up.
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Old 09-25-2015, 10:33 AM   #73
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Originally Posted by m.wood0213 View Post
Facts and information are awesome. Opinions are a coin flip. Like someone said earlier; when you mod a new platform YOU get to discover the problems...WHY YOU MAD BRO? Auto manufactures do not build a car and say "hmmm okay will this survive modding... idk lets test it... oh wait I cant its new, there are no parts!" Quit expecting manufactures to predict our every move. They built this car the way it is and it lasted for them so they sold it to us. Thats why there's a warranty! If you're too impatient to wait til then to mod..."you have to pay to play."

Just needed to vent a bit.

Keep posting failures and educating the community, but don't give your opinion on a failure without facts to back it up.
Nuh-uh, Subaru should build their engines out of adamantium so we can push 1000 HP.
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Old 09-25-2015, 10:55 AM   #74
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They are not that weak. Consider a handcrafted CLA45 AMG 4 cylinder is making 355hp at the CRANK and there are dudes here pushing that and more on a mostly stock engine at the WHEELS.

I think that's part of the problem. People buy these cars and expect 300-400+ horsepower and loads more torque on a mostly stock motor.

The stock motors going bellyup are few and far between so far. Not saying it doesn't happen, but you gotta pay to play.
You're comparing a hand crafted AMG engine to a WRX engine?
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Old 09-25-2015, 11:28 AM   #75
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You're comparing a hand crafted AMG engine to a WRX engine?
No, the point was that people are expecting the same or more performance from a stock (or mostly stock) Subaru mass produced engine than they are a handcrafted Mercedes engine that costs 4-5 times the cost.

I guess from where I sit I would not expect much from these engines anything above a stage 1 or maybe stage 2 with a very safe conservative tune. People trying to push the barriers are gonna blow engines. It is what it is. Unless you are prepared to rebuild the engine you gotta pay to play or just buy a different car to start with if your goal is 350-500hp. Lots of other platforms out there that can do that all day long.
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