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Yeah, running extremely hot from the very beginning and plus the location of the twin turbos being where they are certainly doesnt help, excess heat in the engine bay is always tremendous, and you all must know the reason i swapped the turbos from the spare engine that i had was due to the original ones suffered from head chaffing, meaning the turbine blades had chips at the edges due to extreme heat even with water running in the intercoolers, kind of weird actually. Guess its all in the afr
 

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Oh yeah, and another thing, i also had the cylinder heads swapped coz we found hairline cracks around the injector and valves both inlet and outlet areas, just cracks and even able to feel the cracks by running your fingernails across them, amazing! So we had a compression test done by taking out the plugs to run pressure readings but fortunately pressure was still good, but had the heads replaced anyway for good measure.
Quite a number of issues actually the s63 hmmph!
 

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I'm fascinated by this thread and thank you for the info.

I think over all cars cars today are made with a finite service life. I'm not sure if it's planned obsolescence ,cost cutting , or engineering compromises. Personally I have no interest in long term holding of any new car.
 

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I've lurked on this forum for years. Scary to read this thread. I'm sorry to hear about the issues described. Cracks in the head was a new one for me to read. Unbelievable!
 

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Just bought a 2012 X5M last March. 83k miles, with a stage two tune and exhaust/turbo tweaked. I have put about 1k miles on it. Ran it hard through a tunnel to hear the great sounds and the motor seized. Bit bummed and now trying to figure out what to do. A BMW master tech was visiting the shop where my dead X5 is and said it is probably a seized main bearing, which he said was not uncommon. He also said that it was not just my running it hard, but it was just time for the failure. The miles, my running it hard, and the tune all conspired to kill it.
Not sure I will spend $15k to fix a $22k vehicle. Sad, because I love the damn thing.
 

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:( Man that sucks Dave. What a horrible feeling that must have been. Did it make any "time to meet the maker" noises when it locked up? What happens to the transmission when the motor seizes? Does it auto-default into neutral? They don't make manual tranny X5 M's do they?
 

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Tough one because the cost of an engine replacement may not make sense. Seeing engines in the $10k to $14k range, plus r&r. May just sell the car as is.
The engine never made any odd noises. The engine seized, lights came on showing multiple issues, I coasted to a stop and that was that. The automatic allowed the engine to seize but not to lock anything up. Not sure if these were available with a manual. Loved the car and it was a less expensive (I thought) alternative to getting a MB E63 wagon.
 

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Craze - I was referring to the Mercedes E63 AMG wagon, which I lust after. The X5 M checked most of the boxes the Mercedes wagon did, but at a lower cost. My X5 is Monte Carlo blue, with white/black interior. A great all around look, with remarkable performance. Of course, the seized engine and the very expensive replacement cost has been tough to take.
 

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Tough one because the cost of an engine replacement may not make sense. Seeing engines in the $10k to $14k range, plus r&r. May just sell the car as is.
The engine never made any odd noises. The engine seized, lights came on showing multiple issues, I coasted to a stop and that was that. The automatic allowed the engine to seize but not to lock anything up. Not sure if these were available with a manual. Loved the car and it was a less expensive (I thought) alternative to getting a MB E63 wagon.
Shame on the engine.

- bright side, these engines are modular in design, so consider researching into n63 aftermarket upgrades to avoid m tax. Only select parts are m specific, the rest is literally carry over. Its almost criminal the yarn they spin to justify ubsurd parts prices for these things.
 
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