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Old 09-25-2015, 11:54 AM   #76
Bsinc42
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not saying these wont blow if they havent already but apparently both have stock internals..seems crazy

535whp
https://www.youtube.com/watch?v=Elh3H9RzPJw

475whp
https://www.youtube.com/watch?v=v_6PtaC21bk
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Old 09-25-2015, 11:56 AM   #77
thill
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Quote:
Originally Posted by Bsinc42 View Post
not saying these wont blow if they havent already but apparently both have stock internals..seems crazy

535whp
https://www.youtube.com/watch?v=Elh3H9RzPJw

475whp
https://www.youtube.com/watch?v=v_6PtaC21bk
They may last 100K miles. Or they may blow tomorrow. But I doubt anyone would be surprised it/when they blow and it would probably give folks the chance to go with a built engine.

If I was planning on 350+hp and loads of torque with this car I would just plan on getting a built engine and address the typical areas of concern and also use a tuner who knows what they are doing. I mean once you start pushing this kind of power you are basically using your car as a project car and it is no longer going to be a reliable daily driver.
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Old 09-25-2015, 12:21 PM   #78
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Quote:
Originally Posted by psyclobe View Post
Model/Year: 2015 WRX Base
Milage: 17630
EM: Cobb AP
Mods: IAG AOS/ETS Intake/ETS Intercooler/ETS Turbo Back Exhaust/TGV Deletes/ProTune/Grimmspeed 3 port/Mishimoto radiator
Fuel: Propel E85
OIL: ENEOS 5w-40
Circumstances: Highway pull in 6th gear WOT
Actual engine failure: Piston linkage to rod shattered (was not low on oil)
Did you not change out your fuel injectors and fuel pump or were you hoping for the best on that outcome?
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Old 09-25-2015, 12:24 PM   #79
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Did you not change out your fuel injectors and fuel pump or were you hoping for the best on that outcome?
Not needed.
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Old 09-25-2015, 12:56 PM   #80
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^that's the mind frame that leads to blown motors....

I just dropped my '16 off at the shop this morning to have a 65c and intake installed and to have it tuned. Discussed some of the issues leading to these blown motors...tuner mentioned a lot of it has to do with the fuel used and the lack of supporting mods. Bad fuel can lead to the ecu pulling the timing. Running mods that increase engine power require an adequate fuel system to provide the gas needed to sustain that power at higher loads.
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Old 09-25-2015, 01:01 PM   #81
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The factory system is adequate on our motors, unless running e85
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Old 09-25-2015, 01:54 PM   #82
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Originally Posted by miyagi View Post
^that's the mind frame that leads to blown motors....

I just dropped my '16 off at the shop this morning to have a 65c and intake installed and to have it tuned. Discussed some of the issues leading to these blown motors...tuner mentioned a lot of it has to do with the fuel used and the lack of supporting mods. Bad fuel can lead to the ecu pulling the timing. Running mods that increase engine power require an adequate fuel system to provide the gas needed to sustain that power at higher loads.
The in-tank fuel pump and injectors can adequately keep up at higher loads. A DW65C isn't going to be doing anything the stock pump isn't already doing. The stock HPFP is the weak link here.
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Old 09-25-2015, 02:53 PM   #83
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Originally Posted by dr_wookiee View Post
The in-tank fuel pump and injectors can adequately keep up at higher loads. A DW65C isn't going to be doing anything the stock pump isn't already doing. The stock HPFP is the weak link here.


Have you ever kinked a hose and let it build up pressure and release it? Same concept.

Stock pump on e85 cannot provide enough PRE HPFP flow to support it for the additional fuel. The increased fuel provided by an aftermarket low pressure pump helps this.

So yes, an updated low pressure pump is doing a LOT.
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Old 09-25-2015, 03:06 PM   #84
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Originally Posted by thill View Post
They may last 100K miles. Or they may blow tomorrow. But I doubt anyone would be surprised it/when they blow and it would probably give folks the chance to go with a built engine.

If I was planning on 350+hp and loads of torque with this car I would just plan on getting a built engine and address the typical areas of concern and also use a tuner who knows what they are doing. I mean once you start pushing this kind of power you are basically using your car as a project car and it is no longer going to be a reliable daily driver.
I already have my email in with IAG on putting in a stage 3 block. I don't want to wait until something goes out... more money. I will be happy and content with a stage block running stock turbo on my stage 2 parts then when I get bored I will upgrade the turbo and be good to go. I'm at 42k miles and show no symptoms of anything bad but you mod a car you run the risk of messing it up.

I just find it silly when people get upset over stuff like this. Stock cars, maybe a little more understandable but there still is an acceptable manufacturing failure rate and they aren't even ANY where close to that limit. It's the people who get upset because they tanks the engine because they "only" were stage 2... which is easily a 50%+ power increase over stock crank HP. Nothing about Subaru is obligated to create an engine with forged parts that can take 800WHP stock. Stupid and aggravating because those are the stupid parking lot crawlers that talk trash about cars because THEY messed them up.
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Old 09-25-2015, 03:19 PM   #85
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Originally Posted by benit0 View Post
Have you ever kinked a hose and let it build up pressure and release it? Same concept.

Stock pump on e85 cannot provide enough PRE HPFP flow to support it for the additional fuel. The increased fuel provided by an aftermarket low pressure pump helps this.

So yes, an updated low pressure pump is doing a LOT.
I've been running E85 w/flex fuel for the last seven months without a single issue. I've asked my tuner who is well versed in both the FA and flex fuel tuning whether an aftermarket fuel pump would be beneficial. He's told me more than once that it isn't. If he even hinted that it could help in the slightest, I wouldn't hesitate to drop the less than $200 and hour in my garage to install a new pump. I haven't seen any evidence at all that the stock pump can't supply the HPFP the fuel it demands. The most compelling reason I've seen to upgrade the pump is "hey, it can't hurt!"
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Old 09-25-2015, 03:52 PM   #86
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Quote:
Originally Posted by psyclobe View Post
Model/Year: 2015 WRX Base
Milage: 17630
EM: Cobb AP
Mods: IAG AOS/ETS Intake/ETS Intercooler/ETS Turbo Back Exhaust/TGV Deletes/ProTune/Grimmspeed 3 port/Mishimoto radiator
Fuel: Propel E85
OIL: ENEOS 5w-40
Circumstances: Highway pull in 6th gear WOT
Actual engine failure: Piston linkage to rod shattered (was not low on oil)
You did a highway pull in 6th gear, pedal to the floor? Subject your motor to an unnecessarily high load much? This isn't a weakness in the car; this is driver error. There's a reason why even automatics kick down before accelerating. The only gear you should be in doing a single gear pull is 4th (for 6-speed manuals) and only when you have sufficient revs (~2,5K-3K rpm).
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Old 09-25-2015, 03:54 PM   #87
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Originally Posted by sooper_wrx12 View Post
You did a highway pull in 6th gear, pedal to the floor? Subject your motor to an unnecessarily high load much? This isn't a weakness in the car; this is driver error. There's a reason why even automatics kick down before accelerating. The only gear you should be in doing a single gear pull is 4th (for 6-speed manuals) and only when you have sufficient revs (~2,5K-3K rpm).
He was street racing, hence breaking the law... he was above 4k RPM. He should definitely mention it in his description before the "high load low rpm" circlejerk starts.
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Old 09-25-2015, 04:40 PM   #88
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Default 15+ WRX Motor failure roll call!

I ran a 123 MPH at the half mile shootout, and I was at the top of 4th. Where are you running on the street that required you to be pulling through the top end of 6th? How fast were you even going? Smh.
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Old 09-25-2015, 05:20 PM   #89
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I ran a 123 MPH at the half mile shootout, and I was at the top of 4th. Where are you running on the street that required you to be pulling through the top end of 6th? How fast were you even going? Smh.

Because ignorance that's why. But since we are all a bunch of ignorant dim wits here, we think the overdrive gear designed for use on the highway for cruising is actually the fastest gear... It says 6 so it must be the fastest right? But it's Subaru's fault for not accounting for the idiots that buy their cars.
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Old 09-25-2015, 05:33 PM   #90
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Originally Posted by 2gnt2wrx View Post
Because ignorance that's why. But since we are all a bunch of ignorant dim wits here, we think the overdrive gear designed for use on the highway for cruising is actually the fastest gear... It says 6 so it must be the fastest right? But it's Subaru's fault for not accounting for the idiots that buy their cars.
Calm down, no one is blaming Subaru. We're just here collecting evidence to further understand the limits of the platform.
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Old 09-25-2015, 05:51 PM   #91
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Calm down, no one is blaming Subaru. We're just here collecting evidence to further understand the limits of the platform.
Exactly, it's just a thread to collect data.
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Old 09-25-2015, 06:44 PM   #92
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I guess I have to just buy a ****box subaru and build a motor. Even the new FA engines are still blowing....
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Old 09-25-2015, 10:56 PM   #93
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not saying these wont blow if they havent already but apparently both have stock internals..seems crazy

535whp
https://www.youtube.com/watch?v=Elh3H9RzPJw

475whp
https://www.youtube.com/watch?v=v_6PtaC21bk
Yup this is crazy!and both of them with ets turbo kit!could it be the way the kit was designed (better air flow?)has too do with helping the motor breath better?safer?just me guessing and trying too figure out was best for the Fa engines
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Old 09-26-2015, 08:14 AM   #94
simpleJ
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It brings in torque later.

Both eventually failed. 1 popped the freeze plugs I think and the other they tried an even bigger turbo
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Old 09-28-2015, 04:20 AM   #95
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Default 15+ WRX Motor failure roll call!

Does the AP let you monitor HPFP pressure? These motors seem to be going similar to how the 2.3 DISI motors were going with out a HPFP upgrade a few years back.

What is the target fuel pressure?
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Old 09-28-2015, 08:44 AM   #96
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The AP does allow you to monitor fuel pressure. There is no upgrade at the moment and it sounds like the HPFP is not removable. Haven't tried to tinker with it myself but it's been mentioned elsewhere. I've been in contact with someone whom claims all these issues we are having are tune related not hardware. Not sure if that's the case or not. Supposedly Clark turner has it all figured out. I'm gonna be in touch with Cobb today and see what they say.
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Old 09-28-2015, 09:44 AM   #97
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It brings in torque later.

Both eventually failed. 1 popped the freeze plugs I think and the other they tried an even bigger turbo
Whered you hear that?

I've been following these builds. Where are all the built block 15's? I wanna see what those are doing.
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Old 09-28-2015, 09:55 AM   #98
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Originally Posted by Pingupenguins View Post
I guess I have to just buy a ****box subaru and build a motor. Even the new FA engines are still blowing....
Yes... every motor blows when you push it beyond its limits...
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Old 09-28-2015, 09:56 AM   #99
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I'm starting to think that people not upgrading the pumps are 90% of the issue what are the stock pump rated at 150lps? everyone on the list has left the stock pump in? i dont see any upgraded pumps on that list at all and if u wanna talk about E85 if the car is on the dyno being tuned and its got atleast 70% ethenol in it thats still more then enough to make good power. Ive also read some where that even thoe they are 1500cc injectors only 750cc is about useable on them? ive seen cars make 400whp on the dyno they track there cars and drive them and they havent blown up yet.
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Old 09-28-2015, 10:28 AM   #100
simpleJ
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Whered you hear that?



I've been following these builds. Where are all the built block 15's? I wanna see what those are doing.

FB group.
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