victor couldnt be more correct. your installer needs the mercedes specific installation instructions. its called the two step torque stretch method and unless the subscribe to a VERY high end mechanic information system a regular old torque it to xxx lb ft of torque WILL NOT WORK. no loc tite is needed when performed this way. good luck man. but i would not have mb uninstall it as they could say any subsequant problems could be a result of a non-factory part. and again as vic said, do not reinstall the used bolt.

Thanks for the heads up. We'll see what happens. I went with RennTech simply because of how their warranty meshes with the MB one. If they do not address my concerns, I have no choice but to go to MB and let it be what it is. If I get flagged, then I will rely on RennTech's warranty. Either way, I consider myself covered. I'm not going to have the car just sit while blame is placed. I want it fixed and fixed NOW. That isn't just for my car, but I want preventative action taken for all of my SDCrew. We got into this together and I won't have a buddy go through what I did if a little up front work could have avoided it.

Here is my take of what might of happened:

Scenario #1: Original bolt has been reused. If it is the case, than it has already been stretched and will not provide adequate force to keep pulley in place.

Scenario #2: New bolt, but it has not been installed correctly. Proper installation requires torque-angle gauge. It is somewhat dificult to use on the crank due to the location and many shops and "wanna-be mechanics" just "wing it".

http://buy1.snapon.com/catalog/item....re&dir=catalog

The result is loose bolt and pulley sliding off.

Now to the question of the day - Is there a damage to the crank?

The answer is - Very, very likely.

If you can visibly see pulley wobbling it means that it is at the edge of the woodruff key and it is grinding at the end of the crankshaft.

If you are lucky the key is repairable.

If not, you will need a new crank. Around $15,000 parts and labor.

Installing crank pulley on the Kompressor motors is somewhat delicate procedure. Woodruff key is behind the front cover and is almost impossible to see. One has to go by feel as pulley is slid on the end of the crank and it's proper position is verified against other pulleys.

It needs to be done by a professional mechanic with a proper knowledge, tools, manuals and experience.

$100 you just saved by going with a cheap shop can potentially cost you a lot more, as I highly doubt the original shop will stand behind high $$$$$$$$ repair bill.

My best wishes to you my friend.

I would still use loc-tite for peace of mind. Just my two cents.

Our cranks should have dual key ways from factory.

Jangster,
Sorry to hear about your day. Where is Creative located? I would be interested in having him install a couple of mods for me. That kind of customer service is rare.

I also wanted to thank you for giving Vic that visual. LOL
I have been dying to race Vic's CL. Next time let this girl tag along.
No love!!

Glad nothing bad happened to you my friend!

Loctite is big "NO-NO" on a stretch bolt. It distorts TQ readings.

They do not. That is THE reality.

It is the same key that is used on a stock non-Kompressor cars. Apparently AMG decided it was strong enough to support extra 100HP load that kompressor adds.

Jangy -That sucks. I am glad you made it home safe hopefully the car is OK. I have to take mine in to MBSD Monday morning for a few items one of which my be the IC pump.

Greg -I was thinking the same thing

I'm thinking Jangy's head may explode when he reads this.

[QUOTE=Vadim @ MBLN;1969986]
If you are lucky the key is repairable.

If not, you will need a new crank. Around $15,000 parts and labor.

QUOTE]

dont want to get to ahead of ourselves. this is worst case scenario. even so renntech themselves do it for 9k total. hartmut himself told me this.

[QUOTE=NagsHD;1970129]Add a 4k or more to ship the car to and from Florida and its a wash. If that is the case Jangy is in for some serious trouble! I hope that is not the case. That would destroy the joy of modding.

So I read this as an installer error not a RENNtech mistake? Got to check the installer twice and make sure your 45k motor is in good hands!

If I ever have a pulley installed I know I will order it from florida and have my shop foreman install it himself.

Rock, don't try to be the funniest guy on the board, ok? I almost choke myself to death on a sip of Nantucket Nectar Lemon Tea......

Lets see what happens tomorrow- this is all conjecture at this point. Hopefully his engine is ok. If not I know Jangy has an "in" to probably make a warranty claim.

Let's hope everything works out in his favor coz it's really not his fault and he finally committed to a tuner.

mine was wobbling a little, but not as bad as jangy's. I think mine will be fine, but Im more concerned with jangy's since his bolt was off and the pulley was dirty dancing

Jangy,

Glad to hear you got home safely, I and everyone else at Creative is more then happy to work out of the shop to help any of our customers. As for the pulley itself, I will get you guys a new one, theres no question about that. RENNtech themselves would also like to take a look at them.

I dop appolgize for what happened, and how it was a major inconvence for you, bu give me a call monday and we'll take it from there. If I dont hear from you by the afternoon I'll give ya a buzz.

Hope you guys all enjoy the rest of your weekend.

James,

Thanks for stepping up to the plate and take ownership of the issue. You're DA MAN.

My bad...Yes I took it the wrong way, I kinda read it twice thinking...wait didn't this guy reply to my thread wanting to race w/me?? why is he writing this now????...........

Glad I was wrong sorry about the last message..

Thanks for the reassurance. Actually, I didn't save $100. I spent quite a bit more. Going with RennTech in the first place was easily a 25% increase over others and Creative was not the cheapest price I was quoted even for RennTech.

I will definitely get it looked into, but I am not concerned about getting it taken care of. Maybe that is what separates Creative from the rest. You may not be used to seeing other "shops" stand behind their products, but Creative is different than that. Their business model is to grow and be a part of the community they cater to. I'm sure that my crew will be taken care of between Creative RennTech, even if this is a worst case scenario (which I do not think it is as the pulley is currently spinning true).

Rock: Normally, you are right. I did call my lawyer, but that's only because he also happens to be my brother. Hehe.

The real point is that **** happens. It is easy to give kudos to shops and tuners when all is good and well. It is how they treat you during the rough times (like this) that counts. For now, I can only say that Creative has been more than responsive to my demands (and we all know I am demanding). As long as RennTech responds in kind, I am sure that they will get it all worked out. I'm already hooked on mods and will do more as I go. If my worst case is to ship the car to Florida, then perhaps a full out stage 6 is in order? Either way, i can't look back. we are where we are and I will try to make the best of it. Given that, I'm glad that Creative is my shop and Renntech is my tuner.

Hey didnt I say that yesterday while we waited for James? Dont be stealing my lines

I mentioned to Jangy that I too had an experience not much different that what occurred to him. It was the response of the tuner and what they did for me (service) over the next few months that gained my trust and in the end- tens of thousands of dollars in business over the past 4 years.

Actually, VIC55, you did. I am trying to take that same line of thinking.

I'm definitely glad to have had the three of you there. It was very helpful for me. I don't want to let this get to me. i'll deal with it. If the tuner screws me, then I'll scream. until then, I just gotta be happy for the positives.

I still had a blast during the few hours I had the RennTech on. It definitely brought new life to my car and it was awesome having 4 Es hauling that much butt!!

I beleive the torque should be 200-210 ft/lbs then 90 deg.

it is 200 Nm which is 145 ft lbs. I saw Creative do it and it was to MB specs.

You are correct, I was looking at Nm. Sry

Jangy...how long had the pulley been on before you encountered this situation ?

About 12 hours