Quote:
Originally Posted by Rahulio1989300E
I personally would like to get a C63 or E63, or even a CLS63, but I am worried about a major issue regarding that engine that popped up on MBWorld:
M156 cylinder head sealing concerns - MBWorld.org Forums
Apparently, Mercedes-Benz/AMG used weak head
bolts in a large range of engines. (M157? is the engine code)
The M113K even has a fueling problem at cylinder 8 which can cause it to go fairly lean and destroy it's compression, but I think it only really affect cars that have had the boost pressure from the supercharger increased via a smaller pulley. This company has a page with a fix that also explains the issue a bit more. AMG Performance |
The M113k cylinder 8 problem only rears its head when you start tweaking with boost... But they make kits to remedy it!
As for the 63 - they also have problems where they eat lifters/camshafts... Look it up on mb world, theres a class action suit being filed for it.
IMO, the coilpacks are the weakest links on the V12TTs. The rest of it is pretty damn bulletproof.