[e46m3lol]

New valves

[pikcachu]

Originally Posted by e46m3lol

Some of the valve train parts started arriving today. We'll be replacing all the valves and valves springs.

*as of now we still haven't taken off the head*

if there still a head left

[CalCarNut]

So did it break a spring and drop a valve? (not likely or your piston would be done, huh). Sounds like you might get off 'easier' than we all thought huh? fingers crossed e!

[e46m3lol]

Originally Posted by SoCalDave

So did it break a spring and drop a valve? (not likely or your piston would be done, huh). Sounds like you might get off 'easier' than we all thought huh? fingers crossed e!

Crossing my fingers that it is just valve related and she'll be back up and running in a few days.

For sure it is not a whole through the block as other N20 owners have reported so that alone is a relief. Will report with my findings as we go deeper into the motor.

[opfreak]

Originally Posted by Charlie@McKennaBMWService

It's funny you should say that... I have a '15 F80 M3 with 92xx miles in the shop currently that has DP's and a full exhaust married with a JB4, and this client too fell victim to a shotty programmer IMO... Vehicle that was diagnosed with "vehicle tampering" and an engine that was revved beyond it's factory limitations. The clients S55 motor has 30psi in cylinder 1 and after a leak down test we find a bent valve due to impact with the piston. This further supports my statement in saying why the oh so famous JB4 should still IMO be beta phase because nothing seems safe granted that it's just a piggyback. Client states that he was doing moderate spirited driving on map 1 when the incident happened, and cannot recall driving the vehicle aggressively per say granted he had a 400+ mile trek home. On top of bending the valve he also snapped the vanos bolts in the process, now what separates this vehicle from the OP or what "saves" this client is because there were and still is a pending recall for the vanos bolts for the N52/N55 engines, being that the S55's base plant design were stemmed from those particular engines. Still it was shocking to see that something so catastrophic can happen to such a high performance hand assembled engine, something that was obviously accelerated due to quite possibly outside influence...

The problem with almost all tunes is that tuners don't know design limits. As engineering gets better, material limits are better know, simulation and testing get better, engine controls get better and smarter. Design will be brought closer to the limit. Unless these tuners are buying engines and running them to failure they really don't know what the weak points are, or what design limits are. All designs have some built in margin, but how munch engineering are tuners actually doing?

[Stubok]

Originally Posted by opfreak

The problem with almost all tunes is that tuners don't know design limits. As engineering gets better, material limits are better know, simulation and testing get better, engine controls get better and smarter. Design will be brought closer to the limit. Unless these tuners are buying engines and running them to failure they really don't know what the weak points are, or what design limits are. All designs have some built in margin, but how munch engineering are tuners actually doing?

Exactly the reason I'm now on board with GSR. They've pushed their test engine all the way to failure, closely monitoring everything so as to know what needs upgrading and how to tune safely.

[CalCarNut]

Originally Posted by Charlie@McKennaBMWService

It's funny you should say that... I have a '15 F80 M3 with 92xx miles in the shop currently that has DP's and a full exhaust married with a JB4, and this client too fell victim to a shotty programmer IMO... Vehicle that was diagnosed with "vehicle tampering" and an engine that was revved beyond it's factory limitations. The clients S55 motor has 30psi in cylinder 1 and after a leak down test we find a bent valve due to impact with the piston. This further supports my statement in saying why the oh so famous JB4 should still IMO be beta phase because nothing seems safe granted that it's just a piggyback. Client states that he was doing moderate spirited driving on map 1 when the incident happened, and cannot recall driving the vehicle aggressively per say granted he had a 400+ mile trek home. On top of bending the valve he also snapped the vanos bolts in the process, now what separates this vehicle from the OP or what "saves" this client is because there were and sti
ll is a pending recall for the vanos bolts for the N52/N55 engines, being that the S55's base plant design were stemmed from those particular engines. Still it was shocking to see that something so catastrophic can happen to such a high performance hand assembled engine, something that was obviously accelerated due to quite possibly outside influence...

9200 miles and damaged huh. Guess there's no limit to the hardcore enthusiasts want for more power

[rustyminded]

Hey man, I'm sorry for that.. earlier I called a company called ABR houston and asked them few stuff as they torn down two N20 before. so they said they can do upgraded pistons, rods and turbo. maybe that will be helpful

[Thescout13]

Originally Posted by Charlie@McKennaBMWService

Well unfortunately this client seemed to have done mild mods and nothing "dramatic" if you will... Still a shame though...

Yeah because boosting that engine into the 500s hp and torque (basically what the JB4 does on that car) isn't "dramatic" hahahahaha come on, that engine is at its limit already. It's an amazing engine, but even The M head engineer said in that interview that the engine has been pushed as hard as it can go.

[2msport]

Sounds like BMWs next engines would benefit from a higher HP threshold. Engines with 600+hp is becoming more common place these days. I always thought BMW over engineered their engines, so I'm a little surprised.

I've been curious about a 3D printed engine. I would imagine the tolerances would be way above what we currently have. I think it would be a huge leap in engine design.

[tom @ eas]

Originally Posted by Charlie@McKennaBMWService

It's funny you should say that... I have a '15 F80 M3 with 92xx miles in the shop currently that has DP's and a full exhaust married with a JB4, and this client too fell victim to a shotty programmer IMO... Vehicle that was diagnosed with "vehicle tampering" and an engine that was revved beyond it's factory limitations. The clients S55 motor has 30psi in cylinder 1 and after a leak down test we find a bent valve due to impact with the piston. This further supports my statement in saying why the oh so famous JB4 should still IMO be beta phase because nothing seems safe granted that it's just a piggyback. Client states that he was doing moderate spirited driving on map 1 when the incident happened, and cannot recall driving the vehicle aggressively per say granted he had a 400+ mile trek home. On top of bending the valve he also snapped the vanos bolts in the process, now what separates this vehicle from the OP or what "saves" this client is because there were and still is a pending recall for the vanos bolts for the N52/N55 engines, being that the S55's base plant design were stemmed from those particular engines. Still it was shocking to see that something so catastrophic can happen to such a high performance hand assembled engine, something that was obviously accelerated due to quite possibly outside influence...

Hope this isn't who I think it is.

[Reid]

Originally Posted by Charlie@McKennaBMWService

It's funny you should say that... I have a '15 F80 M3 with 92xx miles in the shop currently that has DP's and a full exhaust married with a JB4, and this client too fell victim to a shotty programmer IMO... Vehicle that was diagnosed with "vehicle tampering" and an engine that was revved beyond it's factory limitations. The clients S55 motor has 30psi in cylinder 1 and after a leak down test we find a bent valve due to impact with the piston. This further supports my statement in saying why the oh so famous JB4 should still IMO be beta phase because nothing seems safe granted that it's just a piggyback. Client states that he was doing moderate spirited driving on map 1 when the incident happened, and cannot recall driving the vehicle aggressively per say granted he had a 400+ mile trek home. On top of bending the valve he also snapped the vanos bolts in the process, now what separates this vehicle from the OP or what "saves" this client is because there were and still is a pending recall for the vanos bolts for the N52/N55 engines, being that the S55's base plant design were stemmed from those particular engines. Still it was shocking to see that something so catastrophic can happen to such a high performance hand assembled engine, something that was obviously accelerated due to quite possibly outside influence...

This sounds like a mechanical over-rev caused by a missed shift, which would have nothing to do with any of his modifications.

[dharo1]

Originally Posted by Charlie@McKennaBMWService

Unfortunately it is Tom... And it isn't looking too good for him either, such level of uncommon/unheard of catastrophic failure from the considerably new S55 motor requires our regional engineer to get involved to see what exactly happened thru viewing the FASTA data, which ultimately might work against our mutual client... Told him that I'd do my absolute best to talk to the engineer in showing good faith that what might appear in the data isn't exactly what happened, going to ask for a "slap on the wrist" warning if you will...

Wow. Good to hear that there are Service Departments that do care about their customers.

[DS_BMW]

Why do people leave mods on the car if something happens? It looks way more suspicious then. What does a new s55 cost 20-30k??

[lloydaustin]

Originally Posted by DS_BMW

Why do people leave mods on the car if something happens? It looks way more suspicious then. What does a new s55 cost 20-30k??

The motor alone is about 25k, then the labor and extra parts you might need probably into the mid 30s. Definitely something I would not want to pay for.

[Silvermike]

Originally Posted by Charlie@McKennaBMWService

Well that's a very good question, maybe it's simply because like anyone else, consumers are excited to put in the time when it comes down to modding or at least the desire to mod that is, but simply find it as a nuisance when it comes time to "hide" the evidence. Case and point being, and I'll say it again simply so that the public community is aware, nothing can be hidden from BMW, it's quite impossible in most cases.

... Big Bavarian is watching you!

[Pray for Mojo]

Originally Posted by Reid

This sounds like a mechanical over-rev caused by a missed shift, which would have nothing to do with any of his modifications.

Definitely sounds like money downshift.

[Charlie@McKennaBMWService]

Originally Posted by dharo1

Wow. Good to hear that there are Service Departments that do care about their customers.

Thanks man! I do what I can to help our community!

[Alpine F31]

Originally Posted by Reid

This sounds like a mechanical over-rev caused by a missed shift, which would have nothing to do with any of his modifications.

I'm not sure how you would get a mechanical over-rev when the car has a factory rev limiter. I know I've hit the rev limiter twice in my F22. Does the JB4 tune delete the rev limiter?

[Pray for Mojo]

Originally Posted by Alpine F31

I'm not sure how you would get a mechanical over-rev when the car has a factory rev limiter. I know I've hit the rev limiter twice in my F22. Does the JB4 tune delete the rev limiter?

Shift into lower gear by accident and dump the clutch, the running gear will blow it right through a fuel cut off.

[marcoac14]

That's sad. =/ Any news on what caused the failure?

Best of luck

[e46m3lol]

Originally Posted by marcoac14

That's sad. =/ Any news on what caused the failure?

Best of luck

There was a a delay in getting the first mechanic to come over this past weekend so he can start working on it... Now It's been a nightmare to get a reliable towing company (waited till 1am last night just to find out he didn't bring the rear wheel rollers to load the car onto the flat bed) to actually tow the car to EC Elite Automotive in Huntington Beach CA. They'll be doing the work after all as I have no free time to wrench on it at home.