507 vs Original C63 engine?
from http://www.mercedes-amg.com/c63c.php?lang=eng
So, no unless you pull your engine apart and rebuild it with SLS rods and pistons (a very expensive proposition) then it will not be the same.
Many people will say that the difference between the engines is just a tune, and HP wise, that is mostly true, however from an engineering standpoint, when you increase output, you also increase internal engine stresses, that is where the upgraded rods, pistons and crankshaft become more valuable. The increased HP that comes with the 507 is supported by the upgraded rotating internal engine parts, resulting in greater reliability. You can get the added HP with a tune on a standard C63 and you will most likely not have any problems... most likely. I bet that 99% or more of the modded C63's have no issues. But reliability is the main reason those parts are different. The lighter parts will also give your engine less inertia, which should result in a livelier response to the throttle, engine RPM wise. I doubt many non-professional drivers would notice the difference, but that is one of the aims of lighter internal rotating components.
Last edited by bjonesmd; Mar 12, 2014 at 09:06 AM.
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from http://www.mercedes-amg.com/c63c.php?lang=eng
So, no unless you pull your engine apart and rebuild it with SLS rods and pistons (a very expensive proposition) then it will not be the same.
Many people will say that the difference between the engines is just a tune, and HP wise, that is mostly true, however from an engineering standpoint, when you increase output, you also increase internal engine stresses, that is where the upgraded rods, pistons and crankshaft become more valuable. The increased HP that comes with the 507 is supported by the upgraded rotating internal engine parts, resulting in greater reliability. You can get the added HP with a tune on a standard C63 and you will most likely not have any problems... most likely. I bet that 99% or more of the modded C63's have no issues. But reliability is the main reason those parts are different. The lighter parts will also give your engine less inertia, which should result in a livelier response to the throttle, engine RPM wise. I doubt many non-professional drivers would notice the difference, but that is one of the aims of lighter internal rotating components.
The upgraded internals were not around for many many years and there is tons of E, ClS, ML, CL and S class 63s running around with 507-518hp. It's a miracle they have lasted this long!
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Of course the standard C63 motor is very strong and obviously holds up very well. The different internal components are not necessary to run high HP. However the opposite contention that they provide no added benefit is also untrue. The reliability difference is likely very small and will depend entirely on how the vehicle is used. For the vast majority of owners it will make no difference whatsoever, just like many other "mods" we make to our cars.
The original question concerned the difference in internal components between the standard C63 motor and the 507 motor. Anecdotally, it would appear that there is little if any actual functional difference. Without compiling a statistical failure rate analysis, it be difficult to answer that question definitively.
In the interest of full disclosure; I did not choose a 507 because of the crank shaft and pistons, I got a good deal and it was the only one I could get with all the options.
I know there is the marketing jargon, and what people think are the changes regarding the internals and a tune, and what we have heard, but I would like a detailed spec sheet on both motors and an explanation from one of the builders to understand exactly what else has changed mechanically and software wise from both motors.
I am sure there are a few ancillary things that had to have changed as well...might mean nothing in terms of HP or reliability but I would like to know all the differences.
Just my .02

Non P31/P61/BS don't have the forged internals and make ~451. Sports packages also adds 2-pc rotors, and other "accessories."
Now all of these can be tuned to the same degree and with similar results well over 510HP. Will the 6lb weight savings of the forged internals make a power difference in a tuned car, and to what extent? I sure don't know.
Many would argue that if you are going to really tune a car (tune, headers, etc.) it's better not to pay for factory upgrades that are getting programmed over, or tossed out.
.How much of a difference any of that makes from the outside, idk.
I spoke to my indy-mech (20+ years as a MB service advisor) a while back about upgrading to forged pistons, ported heads, and M159 valve buckets to help prolong the engine life of my C63 since I plan on keeping it for quite a long time. He put it quite simple: you're better off spending that money for routine maintenance if you want reliability.
Unless you're trying to go beyond the extremes of the engine's capabilities, say what Brabus normally does to MBs, then the 507's upgraded internals won't really do much for you.
??? I do realize theres not much you could do for matte paint, but you have to consider the damage is minimal/barely recognizable. Does anybody have some suggestions for me about repairing the paint chips before I wrap my car with clear bra vinyl?
??? I do realize theres not much you could do for matte paint, but you have to consider the damage is minimal/barely recognizable. Does anybody have some suggestions for me about repairing the paint chips before I wrap my car with clear bra vinyl? 
Good luck with the repair.
Good luck with the repair.
these are what determine the force/stress imposed the engine
in other words T = P x V / 4Pi and P = T x w (w = 2 Pi n rev/sec) and V = displacement
P = mean effective pressure which AMG gives in their specs (the only mfg I know of that does, since this is the key indicator of torque
imho there is no risk running this engine up to 520 HP, the E63, S63, etc, do it safely
13.16 bar for the SLS (12.8 for the M156 in the C63, et al)
look under specs
http://www.mercedes-amg.com/engineer...ction=63lv8sls
they list other engines too
Last edited by Ingenieur; Mar 12, 2014 at 05:28 PM.
these are what determine the force/stress imposed the engine
in other words T = P x V / 4Pi and P = T x w (w = 2 Pi n rev/sec) and V = displacement
P = mean effective pressure which AMG gives in their specs (the only mfg I know of that does, since this is the key indicator of torque
imho there is no risk running this engine up to 520 HP, the E63, S63, etc, do it safely
13.16 bar for the SLS (12.8 for the M156 in the C63, et al)
look under specs
http://www.mercedes-amg.com/engineer...ction=63lv8sls
they list other engines too
Chances are you'll off your miserable self first and do us all a favor... Don't be a coward, do your own dirty work
God wants no part of it
Btw I'm spoken for stalker
Obsess much??
Lol
Last edited by Ingenieur; Mar 12, 2014 at 08:45 PM.





