amgstyle

hey guys wierd noise coming from the supercharger clutch. i heard that you have to replace the whole supercharger and can't just replace the clutch, is that true ?? if so my warrenty is expired and the dealer is gonna be expensive. is there anyone where i can buy the supercharger cheap ??? any info will help. thanks in advance.

tjbrum

can you describe the weird noise?

amgstyle

i guess when it spins,it louder than it should. kinda like a grinding noise but not really. sorry its kinda hard to explain

alumar

Is it under low power?; like when I am driving through my neighborhood, at near or slightly above idle (10mph to 20mph under very low throttle) I hear it like a disengage sound, like the clutch is doing whatever it does, but if I step on it just a little, the sound goes away.

bubbenzo

It is probably the bearing at the front of the supercharger clutch pulley. It is untrue that you need to replace your entire supercharger. You can pull the pulley off and pull the bearing out and grease it to reduce the noise. Go to a bearing supplier if you can and show it to them and see if they have a replacement.

bubbenzo

Also, do you only hear the sound when the clutch is disengaged? It disappears when you press on the gas?

alumar

my car is like that

Benzinsider

I just had this done. The clutch can be replaced by itself. If it's the clutch, it will make noise when the supercharger is disengaged. (Low rpms.) I heard this is a common issue. I got mine done under an extended warranty, but it would have cost about $900. ouch!

alumar

But the only byproduct of this is the noise? I am out of warranty and 900 is expensive to replace a 'slight noise'. Now if it has longterm physical issues to the superchargers then its worth the replace

cjwheeling

Any further info on this issue? I have 2002 C32 with the same noise, Mercedes said that I need to replace with a kit that cost around $900. Any info on just replacing bearing?

TemjinX2

i believe you are correct its just the bearing that needs to be replaced. i think you can get a ngk one for $99. Just do a search for supercharger bearing.

ScottW911

I am not convinced that the sound comes from the bearing. I seems to be coming from the clutch itself, as expressed by splinter in this thread:
https://mbworld.org/forums/c32-amg-c...hirp-saga.html

60n5pt1

Or order a C3 pulley that comes already with an improved bearing plus MORE JUICE

TemjinX2

lol thats what i did.

cjwheeling

how much do they run and what kind of performance gains did you see. also, does changing the pulley diminish the fuel economy?

thanks,
Michael

jturkel

www.code3performance.com

new one will cost you $649.99. Dyno gains have shown: +21rwhp/27rwtq Peak ~ +25.6rwhp/30.4rwtq Curve

As far as diminish fuel economy, no it wont diminish it. But the new power might be addicting, so YOU might diminish it!

60n5pt1

i just replaced the pulley (the one below the small grooved pilley to the left of the S/C. I finally nailed down where the whirling sound was coming from. I noticed this after I installed the C3 pulley a few months ago and I thought it was the guide pulley (grooved pulley) so I replaced that. And still, that whirling sound was present. After today's fix, all is quite at the front. That pulley was almost wack when I inspected it. Bearings were pretty shot.
I did notice a very slight almost unnoticable wobble with the crank pulley.
I'll have to keep an eye on that.

okay, as you were