E92 m3 blown engine

[1º]

Originally Posted by Nautik

Does that mean BMW adjusts the timing for cars equipped with the M exhaust?

according to what he says, yes they have to or else your engine will blow eventually.

i've never heard anything like this but everyone is entitled to their own opinion.

[Richbot]

Originally Posted by dexx

Ignorance is bliss.

You must be one happy dude.

[Mr Tonka]

Originally Posted by Richbot

You must be one happy dude.

Best post in the thread.

[spdy330]

At paying over 15K USD I do not know how happy I would be. But at least his motor will be a 2011.

[Deoxford]

15k isn't a bad deal for a new engine
Porsche 997 and 996 engines are about the same, and there has been slot of failures of the the 996 due to the ISB. I had one go at 42k and Porsche wasn't so nice.

[powertrip]

You obviously have NO idea how the BMW DME works. You can run these cars totally catless and experience ZERO detonation. Now if you did that with a turbo engine (ie: Subaru STI), then yes it would most likely cause detonation due to leaner conditions and increased boost.

Originally Posted by dexx

LOL "no mods.."

never change the exhaust on a modern car with computer controlled ignition without adjusting the timing. Of course _you_ can't adjust the timing! Now the engine is running ignition advance that's way too high for the new exhaust. I bet if you tear down that engine there will be pits all over the pistons and heads from the detonation.

[brava09]

Originally Posted by Nautik

Definitely not as bad as it could have been! Also, with a new engine your car might be worth a bit more if/when you go to sell it. Hopefully you can recoup some of that cost. I know I would pay a bit more for a used M3 if I knew it had a newer engine in it.

I would stay away of a car with a replaced engine, on the assumption that the car have seen some serious beating....but that's only my opinion, and usually I stay away of second hand cars unless I know the owner and the car very well.

[mastek]

What Did Bmw Say Was The Cause Of This Failure!!

[spdy330]

Pushing it to the limit and racing

Originally Posted by mastek

What Did Bmw Say Was The Cause Of This Failure!!

[MaxL]

Originally Posted by edo

In Lithuania. Lithuania is the first country in Europe in FTTH developement (according to FTTH Council Europe). And in the top 6 in the world, if I remember correctly.
I don't pay anything, the speed is in my work place The highest speed you can get at home is 300/300, costs ~33USD/month.
Sorry for the OT.

BTW, back on topic. I have the video in which I recorded when the engine failed. However, I still haven't got permission of z00m to post it.

We are in stone age here in North America when it comes to internet and cell phones (thanks to lobbies and local monopolies).

Anyway, good luck with the replacement - good to see BMW being cooperative. Let us know what the cause was.

[mastek]

Oh -- oh -- I got a question.....

[Kyoshi71]

Originally Posted by dexx

never change the exhaust on a modern car with computer controlled ignition without adjusting the timing. Of course _you_ can't adjust the timing! Now the engine is running ignition advance that's way too high for the new exhaust. I bet if you tear down that engine there will be pits all over the pistons and heads from the detonation.

Originally Posted by dexx

LOL yeah right. It tries to adjust after the knock sensors light up like christmas trees. It backs off, and tries again, and again, and again, and again to achieve the timing it was programmed for. That's why the engine isn't destroyed almost immediately.

What do you think aftermarket "software" is doing? LOL. Now you're relying on some random guy to get it right instead of a team of engineers at BMW. Judging from the maps I've seen in person, they get it wrong - a lot.

Originally Posted by dexx

The computer only adjusts the timing in response to knock. The design tolerances are for fuel, not what some monkey might do to their well engineered system. Changing anything in the exhaust means immediately the "correct" timing advance for any given RPM or load point has changed. Unfortunately, freer flowing exhaust means better exhaust evacuation from the cylinder, which means the optimal timing point is retarded compared to it's previous location. This means the first guess by the computer is much too advanced. What happens when you run too much timing? RIGHT.

You have to be a scientist and a computer engineer to understand how it really works, there is no explanation that will be satisfactory for any layman, but if you're curious as to how these things work: http://forums.openecu.org/

Dude, you need to do us all a favor and step back from the keyboard. Now go look through a few dozen matchbooks and find an automotive correspondance class. These short-bus posts do not serve the common good.

Originally Posted by aus

Would a bad bearing cause a piston to go through the block?

Everybody...please stop with the bearings on 2008 cars.

[Rshane]

Originally Posted by Kyoshi71

Dude, you need to do us all a favor and step back from the keyboard. Now go look through a few dozen matchbooks and find an automotive correspondance class. These short-bus posts do not serve the common good.



Everybody...please stop with the bearings on 2008 cars.

It's all ball bearings

[mastek]

OP -- What did BMW say --- was the cause of this engine failure ---- THANK YOU

[GT3 Tim]

Originally Posted by mastek

OP -- What did BMW say --- was the cause of this engine failure ---- THANK YOU

Ditto.

It is possible they said nothing....they have been known to do that in the past.

[knuts]

Originally Posted by Rshane

It's all ball bearings

What the hell you need ball bearings for?

[Brosef]

Originally Posted by Rshane

It's all ball bearings

haha, great movie! for those of you that missed the reference, this is from Fletch.

[z00m]

Originally Posted by GT3 Tim

Ditto.

It is possible they said nothing....they have been known to do that in the past.

They said-maybe he misshifted,or the oil level was low,or....
As I can surely say - both is false. What i can say that we have damn cold winters, a lot of cold starts, also pushed the car(engine is made for that), but servise always on time... And one more thing - we have low quality fuel in Lithuania. 98(93us) is like 91 in terms of quality. There is a story - F612 fuel injectors went bad (some of them) after 400km of break in becouse of fuel as ferrari claimed( i know the car)

So, maybe in worst conditions engine just lasted 95k km's
maybe if i was not the one to drive the car why it's made for,it could last another 95

[z00m]

Originally Posted by blaineac

What the hell you need ball bearings for?

https://www.bmwautodalys.lt/lt/katal...etension-strut
Thats why
full control arm is replacible(not bearings) Nr. 19
The bearing Nr.15 in arm Nr. 14 is replacible. front

[GT3 Tim]

Originally Posted by z00m

They said-maybe he misshifted,or the oil level was low,or....
As I can surely say - both is false. What i can say that we have damn cold winters, a lot of cold starts, also pushed the car(engine is made for that), but servise always on time... And one more thing - we have low quality fuel in Lithuania. 98(93us) is like 91 in terms of quality. There is a story - F612 fuel injectors went bad (some of them) after 400km of break in becouse of fuel as ferrari claimed( i know the car)

So, maybe in worst conditions engine just lasted 95k km's
maybe if i was not the one to drive the car why it's made for,it could last another 95

The engine is designed to be driven hard. The DME will retard the engine if it detonates (poor fuel).

If it shot a rod (which is appears to have done from all the oil), it appears to be a rod bearing failure. The only other realistic things that I think could have happened would be low oil level/pressure (oil pump failure?), overheating (causing a piston to seize), or a mis-shift (exceeding the max rpm). The DME would reveal all of these conditions as it "records" the last xx seconds of operation. I would THINK if they did not warranty the engine 100%, they would have some reason behind it. If it happened to me, I would make damn sure they had proof if was my fault and not a mechanical break-down of some sort (oil pump failure, rod bearing failure, etc.).

[mastek]

Originally Posted by GT3 Tim

The engine is designed to be driven hard. The DME will retard the engine if it detonates (poor fuel).

If it shot a rod (which is appears to have done from all the oil), it appears to be a rod bearing failure. The only other realistic things that I think could have happened would be low oil level/pressure (oil pump failure?), overheating (causing a piston to seize), or a mis-shift (exceeding the max rpm). The DME would reveal all of these conditions as it "records" the last xx seconds of operation. I would THINK if they did not warranty the engine 100%, they would have some reason behind it. If it happened to me, I would make damn sure they had proof if was my fault and not a mechanical break-down of some sort (oil pump failure, rod bearing failure, etc.).

Ya - EXACTLY

If they were making ME pay 50% of a $20k+ Engine -- I would want to see MAJOR PROOF of my mishap.

OP -- what did BMW show you, that made you say: "OK I'll pay the 50% of the engine, since I did fk it up"??????????

[1º]

but if they had this proof, wouldn't that give them more incentive to not go halfway?

and if it was BMW fault, couldn't they just say "its out of warranty, sorry"?