E63 - Blown Engine
#26
Junior Member
People seem to forget these things produce over 500 hp naturally aspirated, how many engines do that? SERIOUSLY? They are not built to last forever, they are built for high performance. Head bolts are a well known weakness/flaw on they first of the model but they are only bolts at the end of the day.
#27
MBWorld Fanatic!
Yes, and these bolts can be replaced, not exactly cheap I might add. But is saying that, there is nothing on the M156 that can't be fixed, if your willing to spend the $$$$
#28
Member
Unfortunately, the early years of this 6.2 liter motor, 2007 - 2010 I believe, have had known issues with cam shafts, lifters, head bolts...top end in general was not well designed. I think it was the first engine to be designed by AMG and not actual MB; even some 2013 and 2014 have issues. I personally would avoid this motor, especially the early years.
#29
Member
well known issue.. this is just one of the articles
The 6.2-liter, naturally-aspirated V-8 (codenamed M156) was the first engine wholly developed and produced by AMG and it's one of our favorites. Tuned to put out over 500 hp with an addicting sound track, it's widely regarded as an engine that can do no wrong.
Unfortunately, that's not the case with the previous owner of a 2007 Mercedes-Benz E63 AMG who is spearheading a class-action lawsuit against the automaker and the M156 engine for an alleged defect that leads to premature wear and possible engine failure. According to the suit, which is posted on Mercedes-Benz enthusiast site *********, the defect stems from the combination of the camshafts (made of cast nodular iron) and the valve lifters (made of 9310 grade steel). The suit alleges the following key points:
- that components were either improperly heat-treated or installed with improper offsets
- Mercedes was aware of the issue since 2007 following the release of service bulletin S-B 05.20/20b.
- Mercedes engaged in unfair business practices by selling a defective product
- Mercedes breach implied warranty of engine
The 6.2-liter, naturally-aspirated V-8 (codenamed M156) was the first engine wholly developed and produced by AMG and it's one of our favorites. Tuned to put out over 500 hp with an addicting sound track, it's widely regarded as an engine that can do no wrong.
Unfortunately, that's not the case with the previous owner of a 2007 Mercedes-Benz E63 AMG who is spearheading a class-action lawsuit against the automaker and the M156 engine for an alleged defect that leads to premature wear and possible engine failure. According to the suit, which is posted on Mercedes-Benz enthusiast site *********, the defect stems from the combination of the camshafts (made of cast nodular iron) and the valve lifters (made of 9310 grade steel). The suit alleges the following key points:
- that components were either improperly heat-treated or installed with improper offsets
- Mercedes was aware of the issue since 2007 following the release of service bulletin S-B 05.20/20b.
- Mercedes engaged in unfair business practices by selling a defective product
- Mercedes breach implied warranty of engine
#31
Alusil lasts a whole lot longer than a steel liner and it is not a cheaper manufacturing process. It has much better wear characteristics than steel/iron lined engines. The problem with the NA 63 engine is caused by bad head bolts and cam wear lobe wear. Not defending that engine because they are very prone to failure whereas most MB engines are pretty solid.
Now I will explain why Alusil is cheaper to manufacture. First off if it were to use iron liners they have to be made separate from the aluminum block that is the first expense. Next they have to be placed in the mold that the aluminum block will be cast in, this is the second expense. So there are 2 huge added costs to add a cast in place iron liner. Now with Alusil the whole aluminum casting is made from the stuff all cast at once. So yes it is a cheaper manufacturing process.