The crank snout is tapered, just not enough that you can see the taper with your eyes. You would need a micrometer for that.

That's one thing I've always hated, when people think it's impossible to do something without dishing out the big bucks and letting a rockety scientist work on your car. I still can't say that what I did worked until I give it some time and abuse...but for now it sure does seem better than the alternative ( a $10K engine or a $3K crankshaft swap ).

Just barely...to the point of it being barely noticeable. And only when I shine my super bright LED light at it ( can't see the wobble with just the surrounding light. It has a LOT less than it did the times I had it before, and quite frankly with all the damage done I'm not surprised it not 100% true. I'm already tucked in right now so I'd have to get a video tomorrow or something.

Then again, even my oem pulley had slight wobble. Just barely visible to the eye.

This guy even have a 55k? Like why are you posting here screw off..

So glad to hear it's good so far! I can totally see my self in this situation.

My ASP has a slight wobble as did my OEM pulley, it's so slight it doesn't show up on a video.

Same here, ASP 185mm. Though I think some of it is just be the engine rocking on its mounts and the big pulley is just the most visable thing to notice it.

who cares? maybe he builds the engines for AMG but drives a C200. Maybe he's an award winning engine designer. Maybe he works at a mercedes repair facility.

There are plenty of 55k owners that wouldn't know a wrist pin from a valve spring, and plenty of non owners that have more engine knowledge than most of us put together.

The E55k is not built from pixie dust. Its a very very basic supercharged V8. There is no magic. The physics of engines and crank dampners don't care what the badge is.

From what I've seen, what the OP did is a magnificent way to take a chunk out of the crank if the key is not an absolutely perfect fit. I should know, it happened to my own supercharged V8.

Please elaborate on this? My key was ultra snug fwiw.

Or maybe he's some dumb kid prentending he knows something on the internet, who has yet to offer a single helpful thing to say in any post he has made or offered any support for why his opinion should matter to anyone?

At least you seem to have some experience with high performance cars and I can respect some of your opinions based on that experience( though you seem to have alittle bit more of a hate on for AMG's). I concur that AMG's are not made with Unicorn *****, and is mechanically functional the same as any other positive displacement OEM supercharged V8. But the engineering and parts quality of AMG is definately superior to standard Benz models. Its a simple fact.

However what I can't stand is people who are not offering positive solutions to problem. Telling someone "your wrong", then not offering a better solution or any support as to why your opinion matters in the least is worth less than **** in my books.

hmm, now thats interesting.

how do you come to this conclusion?

I see where your going with this question...and you are probably right. AMG most likely pulls standard OE parts from a bin, and hand assembles them, to call it an AMG. Theres most likely no additional engineering or parts modifications, other than larger pistons and a supercharger. Why would they need to be better than stock E500 parts, they are practically the same engine, with just a few more HP.

How's Simple observation?

I'll give you a few simple examples:
Brakes: Larger Hubs, 380mm two peice floating rotors( on my P030 car anyway- same tech originally used on McLaren F1) 8 piston brembo calipers,

Supension: larger diameter shocks, stronger bellows on airmatic,different programming, Sway bars are bigger, end links are bigger

Driveline: Different TCM programming for TC lockup and Valve body solenoid pressures. Differential in an AMG Car is 215mm ring gear vs 210mm in non amgs- Axles are bigger diameter too

Engine: Hand built by single tech to exactly tolerances and thuroughly tested...do I really need to go on to the parts differences?

All those parts and processes were engineered for higher strength and stress purposes for better performance...how do you not see that?

Not true at all. Unless what you mean is that they are using parts made in a factory, but we are talking symantics now. AMG uses Hypereutectic Pistons vs regualr cast. Forged steel rods, Differen valve train, different head castings. Not sure about the block or not I know know for sure the above are the all different.

I was being very sarcastic.

If your use to fast cars then 500 whp on a 4200 pound car will feel....odd for the lack of a better word

Congrats man. I'm glad it worked out for you.

Funny you say that, that's what drew me to these cars. Although I must say after modding mine, it's actually starting to bore me. Didn't take much effort on my part to reach my goal. Easiest car I've modded.

I guess you are right. I had a VW GTI with 425whp and it weighed 2900lbs. That would be like my E with 600whp.

I'm kinda worried about the pulley wobble. It's not bad but I know it's not good. I don't think I can do anything about it though since I've installed it more than once and it's always wobbled. I have to measure the runout but I'd bet it would touch 1mm.

Post a video of the pulley.

I'll do it tomorrow morning when theris enough sunlight or maybe the lamp I have at home is good enough. I'll give it a shot.

Gentlemen, there is no better part quality or better engineering. They simply select parts that are better able to cope with higher power or performance. That doesn't make it better, it simply makes it different.

For example, lets say MB specs one piston for an AMG that is forged (not that they are, but its a hypothetical). It can withstand more power than the hyper piston in the standard car, but you get piston slap when cold. The standard piston is dead quiet at all times, and is perfectly fine for the power level.

Which piston is better engineered or higher quality? Neither, they are two parts that serve two distinct needs.

Hand built by a single tech means nothing. I'd rather have a machine assemble my engine every day of the week. People make mistakes all the time. Do you want to be the guy who gets Hans' engine after he had a fight with his wife, or had a few beers at lunch, or has a cold, etc etc.

Quite frankly sir, you may want to inform yourself further.

Just about every single vehicle manufactured today has hypereutectic piston...unless you have a credible source who says they are "regular cast", its pretty clear that they are hyper pistons. Furthermore, hyper pistons are great for one thing...they are quiet as **** because they don't expand nearly as much as standard pistons. But hyper pistons are also very brittle. A few seconds of detonation will hole a hyper piston like nobodies business. The question is, why aren't the AMG's forged.

Now...This is a description of the M113, not the M113k:

At the heart of the engine is a forged steel crankshaft, which is bolted to a pressure cast aluminum block. The crankshaft has the standard V8 five main bearings. The two end caps are four bolt mains, while the center three have six bolt caps. Hollow, forged steel connecting rods are bolted to the crankshaft. Aluminum pistons top off the rods, while a lightweight aluminum oil pan buttons up the bottom end.

http://www.marcusfitzhugh.com/CLK/engd.html


So, now would you care to recant?

Wow, you know a lot...and ...who cares.

Also, what does this have to do with the thread topic? Enough already.

Let me give you a pictorial representation of this comment.........Trust me just because one is different, one is actually better.

You didnt mention it but you need to get a tune with that size pulley -- unlike smaller pullies where it is optional ---- that large pulley must have a tune in order to get anywhere near its potential because the ECU will kill it after 4000rpms--- At least thats what i use to read in the forums -- something like that

I mentioned it...I have a jerry tune.

I made a video but between my hands shaking and the car shaking it's kinda hard to see what's going on and the pulley looks straight. I need more light.

Regardless, I just did two 40-110mph pulls with zero issues. I'm gonna continue using the car this week and this weekend I'm going to pull the damper off to make sure the key is holding up and it's not causing any off wear and tear.

Check the pulley at 1200 rpm. My 172mm has a slight wobble at idle but perfect at 1200 rpm.

I'm pretty sure your wobble doesn't go away...It's probably just an illusion due to the higher speeds.