I saw this online, I know the 55k guys were having issues with this. Im gonna email the seller and see if its been tested, the seller had sold a cnc machined down stock pulley , milled to 65mm http://www.ebay.com/itm/Mercedes-AMG-C32-Chrysler-Crossfire-SRT-Fix-Supercharger-Pulley-68mm-CNC-Dural/281620643061?_trksid=p2047675.c100011.m1850&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140602152332%26meid%3Df001f2d3657d4a5cb061edc0f5071357%26pid%3D100011%26rk%3D1%26rkt%3D2%26sd%3D281599401128

 

We have a magnetic SC clutch, so how in the hell is this supposed to work?

 

No its fixed so there is no clutch. It's spinning all the time ala old school. I'm not sure if the ecm would throw a code if it couldn't control the boost (ie it reads pressure when it has disengaged the clutch for high iat). I don't know why anyone would want a 68 with no clutch unless it was a stacked race only configuration.

 

Yea exactly, it eliminates the clutch, there are a few 55k guys running this fixed setup

 

The only way I can see this could work is if a bypass was routed between the SC snout and the Y-pipe ala Audi A4 turbo (B5).

 

Completely different, but your post reminded me of the old school iron exhaust y-pipe used as a manual cutout with a long cable routed to and mounted under the dash. Push,pull to open and close. LOL
Yes, as mentioned in one of the above posts, the fixed pulley doesn't make much sense other than full race application. Even then. Would you ever be able to let it just idle?

 

A diverter valve would work to reroute any boost when the throttle was closed. The clutch magnet could stay put and the ECU might be fooled.....

 

If some MB guys have it working, they must have figured it out somehow apparently. What gains I wonder. Wouldn't a diverter valve reroute impair flow slightly, and negate any potential gains? At a minimum, you'd never have to worry whether your clutch was slipping or not.

 

I wonder how much hotter the supercharger would run since it will be always spinning.

 

Exactly. Like we're not battling AIT's and heat soak already right?

 

Waldig maintains or did maintain that the SC ran all the time after the clutch engaged for the first time.
See his post of yesteryear.
I guess this was posted before any of you joined the forum.

 

No, we were all here Dave. Here now, we're questioning the practicality of it being always on and how the ECU reacts when you're standing still @ idle. And risk vs. reward. At least I think that is what we're talking about.

 

The Waldig thread was last posted to in September 2008, none of you were signed up at that time.You joined in 2010, a newbie.
All I am saying is that Waldig stated that it was always on after the initial clutch engagement. I think there was a video at one time.
I think there would be a lot of clutch wear if the clutch kept going on and off all the time at high revs. How fast can the SC freewheel due to the air passing through it if the clutch is deactivated? But what do I know.

 

Yes, you're right about the time line. I guess what I meant, was that we all know about his vid. w/ the two led test lights. What we're talking about, and what the vid. shows is that it is not always on after initial clutch engagement, i.e. when forward speed is slowed way down,stopped, when in neutral or park, etc.

 

Obviously you know you are wrong regarding high IAT conditions....<br />
<br />

 

I'm not sure other than not adding to the thread by trying to be some "old dog" around here.

The ECU will shut down the SC during specific events and at specific safe RPMs. Prove us newbies wrong besides posting some old thread.

My main point is this - why do I want a 68 always one unless I'm stacked on a full race car with something like a 185? I do not want the SC engaged with a cooling system failure....

 

I just added an old thread that had addressed the issue in some respects, I was hoping to see some comments from people knowledgeable in the subject, obviously you are not familiar with discussion and how it works. You just seem to get snarky for no reason.

I know a bit about our cars but not too much on this matter, I do not expect to learn too much from you that's for sure.

The guy who wrote that thread knows more about these cars than most and a lot more than you'll ever know.

 

This pulley doesn't eliminate the magnetic clutch. It eliminates the sprung backing plate on "normal" pulleys. The clutch is part of the supercharger. If it's made out of aluminum it won't magnetize to the clutch and engage the SC. So that guy in Indonesia just wasted a bunch of metal for no reason. Hopefully no one wastes their money....

 

This bolts directly to the SC shaft, the same shaft the magnetized clutch plate is fitted to. Whats missing here is the bearing of which there is no need.
This part bolts to the shaft and seemingly the two dowels take some of the load. Flaky would be my opinion of it.

 

correct...it is part of the s/c at this point. I don't shim either of my cars so the supercharger is freely spinning all the time although not under load until it engages. I don't see anymore heat build up than usual. It is a novel idea if you are racing the car, but not sure how it would be as a daily driver. Wear and tear would takes it toll faster I am sure.