For anyone who has had there pulleys come off...
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Joined: May 2007
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sl55 AMG
Glad you sorted it all out. I think I'd probably have ended up doing the same fix if I'd have been put in the same situation. I'm a stickler for getting things done right but once the crank is damaged thats a serious bill to replace it your alternative was a much more attractive fix.
I'm going to be doing a pulley install (or getting a specialist garage to do it for me) in the uk and think I might watch them do it. I dont want to have any *** puckering moments or wobble.
I'm going to be doing a pulley install (or getting a specialist garage to do it for me) in the uk and think I might watch them do it. I dont want to have any *** puckering moments or wobble.
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Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
Glad you sorted it all out. I think I'd probably have ended up doing the same fix if I'd have been put in the same situation. I'm a stickler for getting things done right but once the crank is damaged thats a serious bill to replace it your alternative was a much more attractive fix.
I'm going to be doing a pulley install (or getting a specialist garage to do it for me) in the uk and think I might watch them do it. I dont want to have any *** puckering moments or wobble.
I'm going to be doing a pulley install (or getting a specialist garage to do it for me) in the uk and think I might watch them do it. I dont want to have any *** puckering moments or wobble.
All I must say is to make SURE you do the 275lb-ft of torque + 90*. It's a ***** load of torque and I had to do it with a huge pipe and lots of tries but I eventually got there.
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From: San Diego
F-250
The resonant frequencies produced by pulley wobble will put a strain on your main bearings. Depending on the frequencies produced through the harmonic range, the damage could be quick, or it could be slow, however in either case, there will be additional wear. Some frequencies produced can actually snap the crank before the bearing goes, similar to certain frequencies breaking crystal.
Thread Starter
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Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
The resonant frequencies produced by pulley wobble will put a strain on your main bearings. Depending on the frequencies produced through the harmonic range, the damage could be quick, or it could be slow, however in either case, there will be additional wear. Some frequencies produced can actually snap the crank before the bearing goes, similar to certain frequencies breaking crystal.
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Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
Took my pulley off today to swap it with an ASP 178mm oem type pulley to see if my wobble was due to the crank damage or due to the pulley simply being wobbly...well my ASP pulley wobbles just the same so bad news for me. 
Regardless, the crank snout and new key look just as good as the day I installed the EC pulley 4 months ago and hundreds of WOT runs after. Good news for me.
Regardless, the crank snout and new key look just as good as the day I installed the EC pulley 4 months ago and hundreds of WOT runs after. Good news for me.
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From: Chicago
03 E55 AMG, 06 Harley Road King Custom 06 Ram 2500 Cummins, 97 Firebird Race Car, 88 Cutlass Supreme
I must say I was kinda 
when I saw what was going on here at first. I know if I was facing the repair costs plus labor time and talking my buddy into letting me use his shop to rip out the engine to do a proper repair I'd probably try the exact same thing. I've pinned cranks for a procharger (belt driven centrifugal supercharger powered off the crank pulley/balancer) install on an iron LQ9 6.0 chevy truck motor going in my old camaro and the pins were tiny in comparison (about the size of the lead in a pencil) to this huge keyway you've added. That motor was built to put a bit over 700 to the wheels on the blower with a small shot of nitrous possible still. I doubt the blower will ever rip this apart especially since you've had it apart after some run time and everything looked as when first installed. I'd just keep an eye on the wobble to see if it ever starts getting any worse. Otherwise I must say my hats off to you and the repair that's still holding up. 
when I saw what was going on here at first. I know if I was facing the repair costs plus labor time and talking my buddy into letting me use his shop to rip out the engine to do a proper repair I'd probably try the exact same thing. I've pinned cranks for a procharger (belt driven centrifugal supercharger powered off the crank pulley/balancer) install on an iron LQ9 6.0 chevy truck motor going in my old camaro and the pins were tiny in comparison (about the size of the lead in a pencil) to this huge keyway you've added. That motor was built to put a bit over 700 to the wheels on the blower with a small shot of nitrous possible still. I doubt the blower will ever rip this apart especially since you've had it apart after some run time and everything looked as when first installed. I'd just keep an eye on the wobble to see if it ever starts getting any worse. Otherwise I must say my hats off to you and the repair that's still holding up.
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Joined: Oct 2009
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From: Southern California
E55 w/ goods, Z32 Project underway
Perhaps the wobble could be attributed to two wobbly pulleys......were you able to verify pulleys to be wobble free from another car? Either way, nice save.
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Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
I must say I was kinda when I saw what was going on here at first. I know if I was facing the repair costs plus labor time and talking my buddy into letting me use his shop to rip out the engine to do a proper repair I'd probably try the exact same thing. I've pinned cranks for a procharger (belt driven centrifugal supercharger powered off the crank pulley/balancer) install on an iron LQ9 6.0 chevy truck motor going in my old camaro and the pins were tiny in comparison (about the size of the lead in a pencil) to this huge keyway you've added. That motor was built to put a bit over 700 to the wheels on the blower with a small shot of nitrous possible still. I doubt the blower will ever rip this apart especially since you've had it apart after some run time and everything looked as when first installed. I'd just keep an eye on the wobble to see if it ever starts getting any worse. Otherwise I must say my hats off to you and the repair that's still holding up.
when I saw what was going on here at first. I know if I was facing the repair costs plus labor time and talking my buddy into letting me use his shop to rip out the engine to do a proper repair I'd probably try the exact same thing. I've pinned cranks for a procharger (belt driven centrifugal supercharger powered off the crank pulley/balancer) install on an iron LQ9 6.0 chevy truck motor going in my old camaro and the pins were tiny in comparison (about the size of the lead in a pencil) to this huge keyway you've added. That motor was built to put a bit over 700 to the wheels on the blower with a small shot of nitrous possible still. I doubt the blower will ever rip this apart especially since you've had it apart after some run time and everything looked as when first installed. I'd just keep an eye on the wobble to see if it ever starts getting any worse. Otherwise I must say my hats off to you and the repair that's still holding up. 
MBWorld Fanatic!
Joined: Oct 2009
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From: Southern California
E55 w/ goods, Z32 Project underway
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
I'll tell you what...I've thought of sanding the crank snout enough to allow the pulley to fully seat it's self against the oil pump gear to eliminate the wobble but fear that the clamping forced would be even lower and then the key may eventually give so the wobble will stay. 
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From: San Diego
F-250
You think??? If the pulley flys off, I don't think it will be a situation where you are not sure what happened..
If it did fly off, can you provide some details?
If it did fly off, can you provide some details?
- Pulley Type?
- When Installed?
- By who?
- Torque of Pulley when installed?
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,825
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From: Southern California
E55 w/ goods, Z32 Project underway
He has a thread on it.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
Thanks.
Yup. Just grind down a keyway for your new key ( I got one at a local machine shop...they had a ton of them laying around and picked one that fit my pulley ) and insert the key ( you can use glue to hold it in place while you slide the pulley over, I didn't use anything though ).
The oem key is just too tiny to do much. The new one I installed is MUCH larger.
The oem key is just too tiny to do much. The new one I installed is MUCH larger.
Thread Starter
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Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
It's pretty bad, even when revved it wobbles but VERY slightly ( barely visible ). Revving the engine won't make the wobble go away, it'll just make the wobble so fast that you can't see it. People are always so scared of wobble yet my car has given me zero issues with very bad ( almost scary ) wobble...lol
