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-   -   FR-S Rod knock (https://www.ft86club.com/forums/showthread.php?t=31093)

brbrz 03-18-2013 11:55 PM

Quote:

Originally Posted by FirestormFRS (Post 794138)
I so wish I had a picture of the last engine we got a look at. All four rods were bent at 30 degrees. Bearings were flattened, pistons were in pieces. A truly hydro locked engine will not have a bearing knock, it will have a large hole in the crankcase

My friend's had had an '83 Civic that that was hydro locked. Bent all 4 piston rods into S shapes but that was the only damage. Replaced the piston rods and put another 100K miles on the car. Weirdest looking thing to see a bunch of piston rods bent like that.

Captain Insano 03-19-2013 12:15 AM

I have never liked dealerships, reading this just reinforces my hatred.

pozer 03-19-2013 08:49 AM

After speaking to the service manager at the dealership they stated there is a knock on Cyl 2 and this has to be a bent rod so they are stopping their troubleshooting and will not cover this under warranty but if I would like them to continue troubleshooting I can authorize the labor cost and it could be up to $1800.00.

This felt like a scare tactic the way it was presented to me but I know I did NOT hydro lock this engine and I’m defending myself against a fictitious story the dealership came up with so I authorized the labor cost.
After two days of tear down I went to the dealer to check on the progress and found the engine completely taken down to the sealed block they said today they will open the block and see what is really going on.

I received a call from the service manager explaining they found no water, no bent rod and no other damage but a spun bearing and they would need special equipment to make sure the rod was not bent just a LITTLE BIT if they wanted to go that far... The exact statement said to me was “We cannot prove 100% a hydrolock caused this issue so we are sending the data to Toyota to see what they want to do next.”

NEXT? The dealership just proved I was NOT lying and I did not hydro lock this motor but the manager sounded disappointed they couldn’t prove their story was real. WTF.
I will say at least management was nice and informative when I finally spoke to someone who wasn’t a front desk monkey.

Sportsguy83 03-19-2013 09:55 AM

I HATE DEALERS......

Rayme 03-19-2013 10:27 AM

I'm wondering how the hell a rod bent just like that on a stock engine. Manufacturing defect?

Sportsguy83 03-19-2013 10:39 AM

Quote:

Originally Posted by pozer (Post 802834)
they found no water, no bent rod and no other damage but a spun bearing

Quote:

Originally Posted by ottopilot (Post 802927)
I'm wondering how the hell a rod bent just like that on a stock engine. Manufacturing defect?

See above, there was no bent rod.

pozer 03-19-2013 10:56 AM

Well the dealer just called and they have ordered the replacement part to repair the issue.
They were very nice about it and even provided me with a loaner car.
.
.Life lesson when you are telling the truth don't back down ever.

markitect 03-19-2013 02:07 PM

Glad they are finally getting it fixed, I hope for your trouble they've given you a nice loaner.

xjohnx 03-19-2013 04:39 PM

Quote:

Originally Posted by pozer (Post 802980)
Well the dealer just called and they have ordered the replacement part to repair the issue.
They were very nice about it and even provided me with a loaner car.
.
.Life lesson when you are telling the truth don't back down ever.

Replacement bearing? or new block all together?

pozer 03-19-2013 05:24 PM

New short block and #2 Direct injector because the pistons was hitting it.

Skurj 03-19-2013 06:26 PM

dunno if i'd want a new short block...

andrew20195 03-19-2013 06:55 PM

Glad the dealer is finally taking care of you rather than trying to lay blame. It seems to me in your video that the engine is running fairly smoothly, just with a very loud noise? I don't understand how the dealer jumped to the conclusion that it was water damage, in that case.

Contrary to what others have said, in my 11 years as a dealership technician I have seen several cases where only one or two rods were bent due to water intake. The '04-'08 Acura TL is notorious for this, in fact. I would guess due to intake design on those cars, when a small amount of water is taken in, it rushes to the cylinders furthest from the throttle body (1 and 4 on that motor). Furthermore, I've seen rods bent from water intake create "rod knock" type noises, when they are bent so badly that the curved part of the rod contacts the cylinder wall.

However, if a rod were bent enough to make that kind of noise, it would most likely misfire badly. Looking at Subaru's intake manifold design, it also seems less likely to affect just one cylinder. A compression test will easily reveal whether any rods are bent, and it's obvious the dealership failed to perform one. If I suspected a car ran through water and the owner tried to hide it, that's the first thing I would have requested authorization to perform, rather than a complete teardown.

Quote:

Originally Posted by Skurj (Post 804066)
dunno if i'd want a new short block...

Why do you say that? I would rather a new short block than just having a bearing replaced.

Captain Insano 03-19-2013 09:27 PM

Quote:

Originally Posted by andrew20195 (Post 804120)
Why do you say that? I would rather a new short block than just having a bearing replaced.

Ditto. I would want a short block installed versus thinking about them tearing down the original block and hoping they get the rod bearing replacement and rebuild right. Plus, if the piston was hitting the direct injector there are other problems making a rebuild more complex as well.

*KID* 03-19-2013 09:45 PM

Good thing everything has worked out.

Skurj 03-20-2013 05:31 PM

Quote:

Originally Posted by andrew20195 (Post 804120)
Why do you say that? I would rather a new short block than just having a bearing replaced.

Long block basically comes assembled almost drop in. Short block means the dealer has to transfer parts from the old and leaves more room for mistakes to happen or just plain old crap gettin in where it shouldn't.

Turbowned 03-20-2013 06:07 PM

It's common practice with Subaru to replace short blocks when there is an issue. Since there is no cylinder head damage reported, there is no need to replace them as well. All the technician has to do is ensure that the mating surfaces are clean, that the gasket seats properly, that the head bolts/studs are torqued down properly and that the timing is set. They probably have a dedicated technician or two to do engine work; that type of thing doesn't just go to the rookie hourly tech.

OrbitalEllipses 03-20-2013 06:19 PM

Quote:

Originally Posted by Turbowned (Post 806555)
It's common practice with Subaru to replace short blocks when there is an issue. Since there is no cylinder head damage reported, there is no need to replace them as well. All the technician has to do is ensure that the mating surfaces are clean, that the gasket seats properly, that the head bolts/studs are torqued down properly and that the timing is set. They probably have a dedicated technician or two to do engine work; that type of thing doesn't just go to the rookie hourly tech.

We've seen how well dealerships can replace the timing covers and cam gears with this car already...

Marrk 03-20-2013 06:23 PM

Quote:

Originally Posted by OrbitalEllipses (Post 806584)
We've seen how well dealerships can replace the timing covers and cam gears with this car already...


True. Dealer service is pretty appalling across the board. Makes it tough for the average consumers, above and beyond the price of dealer service.

Turbowned 03-20-2013 09:33 PM

Come to Mass; we'll take care of you? Dunno what to tell ya.

BlaineWasHere 03-20-2013 09:37 PM

This is why you never tell the dealer what you were doing when the problem occors. Just describe the symptoms of the problem. If you don't give them a backstory they won't go searching so a solution based on that.

If they ask when it started just say "not sure."

andrew20195 03-20-2013 10:36 PM

Quote:

Originally Posted by Skurj (Post 806464)
Long block basically comes assembled almost drop in. Short block means the dealer has to transfer parts from the old and leaves more room for mistakes to happen or just plain old crap gettin in where it shouldn't.

Subaru (and I imagine Toyota with the twins) doesn't offer long blocks. Subaru doesn't even offer assembled heads, for that matter. I do understand where you're coming from now, though. :)

FirestormFRS 03-20-2013 11:03 PM

Quote:

Originally Posted by andrew20195 (Post 807178)
Subaru (and I imagine Toyota with the twins) doesn't offer long blocks. Subaru doesn't even offer assembled heads, for that matter. I do understand where you're coming from now, though. :)

Don't know about the twins but I know Toyota offers long blocks. I've made more than a few over the years

Marrk 03-21-2013 12:45 PM

Quote:

Originally Posted by Turbowned (Post 807050)
Come to Mass; we'll take care of you? Dunno what to tell ya.



I lived in Mass. for two years. Nice buncha guys. :D


But I recall hearing my then-Mazda dealer's Service Manager tell me that the reason I wouldn't have my car back for a few months was because they were "waiting for parts from Japan." Japan, huh? For a main seal? Japan? Right.

Marrk 03-21-2013 12:49 PM

Quote:

Originally Posted by BlaineWasHere (Post 807059)
This is why you never tell the dealer what you were doing when the problem occors. Just describe the symptoms of the problem. If you don't give them a backstory they won't go searching so a solution based on that.

If they ask when it started just say "not sure."


Did you hear that story on NPR yesterday about Congress mandating that all vehicles have data recording devices, so that accidents can be investigated by law enforcement (and insurance companies). Many cars already have these devices on board, but consumers are not told that their data is being collected. And this data is different from a history of error codes.

Captain Insano 03-21-2013 01:31 PM

Quote:

Originally Posted by Skurj (Post 806464)
Long block basically comes assembled almost drop in. Short block means the dealer has to transfer parts from the old and leaves more room for mistakes to happen or just plain old crap gettin in where it shouldn't.

Yes, really three choices here
  • long block
  • short block
  • tear apart existing short block and replace only rod bearing or whatever is damaged, and reassemble original damaged internals and short block

First bullet - this is super overkill. I wouldn't do that if I was a dealership and I consider myself a pretty fair guy.

Second bullet - while you do need to take off heads and bolt on ancillaries... It is relatively straight forward even for a dealership.

Comparing third bullet to second bullet. Second bullet Is much, much, much safer/easier to do than compared to the third bullet!!!

BlaineWasHere 03-21-2013 08:02 PM

Quote:

Originally Posted by Marrk (Post 808343)
Did you hear that story on NPR yesterday about Congress mandating that all vehicles have data recording devices, so that accidents can be investigated by law enforcement (and insurance companies). Many cars already have these devices on board, but consumers are not told that their data is being collected. And this data is different from a history of error codes.

Yeah, every FR-S/BRZ has one. I'm not sure what that has to do with I was saying though. I've known about it for years.

fistpoint 03-21-2013 09:02 PM

Quote:

Originally Posted by Marrk (Post 808343)
Did you hear that story on NPR yesterday about Congress mandating that all vehicles have data recording devices, so that accidents can be investigated by law enforcement (and insurance companies). Many cars already have these devices on board, but consumers are not told that their data is being collected. And this data is different from a history of error codes.

I believe somewhere in the manual it mentions that this information is to be used only by the repair shop for diagnostic purposes.

mad_sb 03-21-2013 10:51 PM

Quote:

Originally Posted by BlaineWasHere (Post 809500)
Yeah, every FR-S/BRZ has one. I'm not sure what that has to do with I was saying though. I've known about it for years.

I would like to know were the F it is so i can promptly remove it. Having any form of data recording device in a vehicle i purchase should 100% be disclosed to me before i purchase the vehicle.

So, there was mention of the piston hitting one of the direct injectors.... i don't see how that could happen unless the bearing was completely gone.. even then... isnt the injector in the roof of the combustion chamber between the intake valves.... that sounds sketch to me and I would personally be very worried about metal debris in the oil system... ad if the piston was hitting the injector the piston needs to be replaced as well, not just a rod bearing...

OP, i wish you the best of luck man.

andrew20195 03-21-2013 11:32 PM

Quote:

Originally Posted by mad_sb (Post 809858)
I would like to know were the F it is so i can promptly remove it. Having any form of data recording device in a vehicle i purchase should 100% be disclosed to me before i purchase the vehicle.

It's in the SRS control unit. Of course, if you remove it, you will no longer have functioning airbags...

Furthermore, the data stored in that unit is YOUR property. The only way the dealership or manufacturer can legally access it is if you give them permission, or law enforcement has a warrant, or a court subpoenas the information.

RAWR BRZ 03-21-2013 11:34 PM

Quote:

Originally Posted by pozer (Post 793074)
Yes All the holes are on the inside of the engine bay... I also removed the resonator so the large hole on the right side of the box is open but this would still mean I would need to fill the engine bay with water and it would also stop the lower part of the stock air box from sucking up any water in since it can't complete a vacuum.
.
BTW I completely agree had I hydro locked the engine they should not cover it but this is not the case..

You'd want to get a cover for that hole from removing the resonator, air sucked into there isn't filtered by the air filter and you may have dust and stuff sucked in.

mad_sb 03-21-2013 11:39 PM

Quote:

Originally Posted by andrew20195 (Post 809961)
It's in the SRS control unit. Of course, if you remove it, you will no longer have functioning airbags...

Furthermore, the data stored in that unit is YOUR property. The only way the dealership or manufacturer can legally access it is if you give them permission, or law enforcement has a warrant, or a court subpoenas the information.

"legally" being the key word.... I guess i'll start investigating to see if the recording function can be shut off...big brother needs to stay the F out of my car. :offtopic:

andrew20195 03-21-2013 11:43 PM

Quote:

Originally Posted by mad_sb (Post 809984)
"legally" being the key word.... I guess i'll start investigating to see if the recording function can be shut off...big brother needs to stay the F out of my car. :offtopic:

If they illegally access the data, you can probably sue the everloving crap out of them. Technically, I believe it is also a criminal offense and could be prosecuted under "hacking" laws.

Marrk 03-22-2013 12:19 AM

Quote:

Originally Posted by BlaineWasHere (Post 809500)
... I'm not sure what that has to do with I was saying though. ...



What that has to do with what you were saying:

There will come a time when the dealer won't have to ask you anything. Indeed, maybe we're there now.


[ame="http://en.wikipedia.org/wiki/Event_data_recorder"]Event data recorder - Wikipedia, the free encyclopedia[/ame]

BlaineWasHere 03-22-2013 02:49 AM

Quote:

Originally Posted by Marrk (Post 810077)
What that has to do with what you were saying:

There will come a time when the dealer won't have to ask you anything. Indeed, maybe we're there now.


Event data recorder - Wikipedia, the free encyclopedia


Right, but the OP said something about following a snow plow in the snow and the dealer goes "oh shit hydrolock". How does this black box know it's snowing and your following a snow plow?

As long as you're not being negligent with your speed and you haven't modified the car what can the black box show that would void a warranty claim?

andrew20195 03-22-2013 10:16 AM

Although we're a bit off-topic now, I'd like to point out a very important paragraph in the BRZ owner's manual concerning the EDR for all you paranoid people:

Quote:

NOTE: EDR data is recorded by your vehicle only if a non-trivial crash situation occurs. No data is
recorded by the EDR under normal driving conditions
and no personal data (e.g. name, gender, age
or crash location) are recorded. However, other parties such as law enforcement could combine the
EDR data with the type of personally identifying data routinely acquired during a crash investigation

naikaidriver 03-22-2013 11:41 AM

If I may add one more tidbit to this side-conversation...

A few years back I was taking my BMW in to be serviced and I made a comment about how much technology had advanced when the "technician" took my key, stuck it in a reader box and was able to get all kinds of data off of it including ECU logs!

He told me about a warrantee claim that was made a few months earlier over a brand new 7-series that a dad bought for his son. It was returned a few months earlier with a blown transmission. The "technician" said when he inserted the key from the car, he was able to tell that the car was moving at 70mph at full throttle when the car was shifted into reverse. He was quite proud of himself for being able to deny the warrantee claim due to abuse.

Anyway, just thought that I would share.

Scott

Marrk 03-22-2013 12:37 PM

@Blaine&Andrew:

I am not an expert on this. However, my understanding is that a Congressman in Massachusetts and the ACLU are upset about EDRs, and they want to make sure there is legislation to protect the consumer because, as pointed out above, you own the data. Also, because of First Amendment rights.

My understanding is also that the EDR is like a "black box" recorder on an aircraft. It is logging data of a kind above and beyond error codes, including what's going on in the cabin (e.g., whether or not there is a passenger sitting on the passenger seat).

Could they tell there was a snowplow on the road at the time of the incident? I don't know. Can some cars tell where the curb is and park themselves? Yes.

OrbitalEllipses 03-22-2013 12:58 PM

EDRs basically record telemetry in the event of a crash; or at least that's what we're told they record. Some cars record different data, as evidenced by the BMW 7 series warranty claim above.

Marrk 03-22-2013 01:00 PM

Quote:

Originally Posted by OrbitalEllipses (Post 811152)
EDRs basically record telemetry in the event of a crash; or at least that's what we're told they record. Some cars record different data, as evidenced by the BMW 7 series warranty claim above.



In any case, you don't have to be a paranoid conspiracy theorist to want to be the one who controls the data, i.e. where is goes and what it's used for.

OrbitalEllipses 03-22-2013 01:29 PM

Quote:

Originally Posted by Marrk (Post 811158)
In any case, you don't have to be a paranoid conspiracy theorist to want to be the one who controls the data, i.e. where is goes and what it's used for.

I very much agree, but let's talk about rod knock and the dealer trying to screw this guy instead of EDRs.


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