I dont remember it being like that... I was in park with the hood up and the clutch was spinning with the pulley. Strange? I just don't remember whats its suppose to be like.

Both the clutch and pulley spin independantly just fine with the car off and belt off....

 

your are sure you checked the tolerances between them after install...all the way around???

 

so are you saying no the clutch does not always spin? Yes I checked tolerances, while it varies in some areas its still within specs according to Code3's instructions. SOoo, does the clutch spin normally or not? I may just give up and go back to stock if its not suppose to spin all of the time.

 

actually i just thought about some times I've seen it before and no, its not suppose to be spinning, im pretty sure of that.

 

yes it will spin and you can take anything like a peice of wood (screwdriver handle) or whatever put it against it and stop it because it is not ingaged, jim

 

ah amx thats interesting, thanks for the tip. I was always under the impression that the clutch was directly connected to the turbine/fans in the S/C, so if the clutch is spinning then the fans are spinning and therefore engaged, regardless of if the pulley is the object making it spin.

Do I make sense??

But anyways, thanks. Its interesting though, I hope more people chime in. Does a spinning clutch mean the fan inside the S/c is spinning, regardless of if the clutch is magnetized and 'on'?

 

It will spin from the force of the air passing through it. I can grab mine and stop it.
Same thing with my BIG superchargers (with belt removed).
Pulley and supercharger rotors aren't directly connected until the clutch is engaged.

NOT the case with my BIG superchargers, no clutch = always connected.

 

Ok so...

I CANNOT stop my clutch from spinning when the car is on, in park. Yet it spins freely when the car is off, and the pulley spins freely of the clutch when the car is off.

But, like I said, when the car is on, in park, the clutch is spinning and cannot be stopped.

Is the clutch directly connected to the turbine in the s/c? So if the clutch is spinning is it spinning the turbine? Or, when the clutch engages, is it engaging both the pulley AND the turbine inside???

It stinks to think I should go back to stock but if you guys can confirm my setup is messed up then I'll go back.

I just find it strange the clutch spins so freely when the car is off yet it unstoppable when the car is on, in park.

I've had no overheating probs or losing the supercharger at all.

 

The input shaft of the supercharger (SC) and the pulley are not engaged (ok should not be engaged) until the SC relay engages and pulls the rear plate on the pulley towards the SC. This occurs somewhere around 1300rpm while in gear not in park or neutral. When the car is running it will appear that they are engaged when in fact they are not (both will be spinning).
With a gloved hand I can stop the SC (silver wheel behind the pulley) while the car is at an idle. Some have used a piece of wood to stop the wheel from turning.
You should be able to look and see if the pulley and SC are engaged or if there is a gap between the two. You could always re-install the stock pulley and see if you can stop it. How many extra shims did you use? With the car off is there sufficient clearance between the SC and the pulley?

If it is engaged all of the all you will lose is some gas mileage and a little extra wear and tear on the SC. On the plus side you have boost on takeoff before 1300rpm!

No overheat SC problems? Are you rubbing that in?

 

Weeelll...

I installed my stock pulley back, with the stock 1 shim, and the clutch still spins at idle in park. You say its normal but I'm wondering how hard should you have to press to stop it? I put on a glove and pressed HARD but it didn't slow down at all.

I used 2 shims on the C3 pulley, then 1 shim, always the same thing, and now the stock 1 shim with the stock pulley...

This stinks. I'm thinking something may really be wrong here...

Also, just in case the sun was sending radioactive magnetic energy through my electrical, I unplugged the clutch but its still spinning full force.

 

you should have 19 to 29 thousands between the pully and the clutch that is what the shims are for ,,I set mine at 19 and it works great,, when at idle i can stop it by holding a rag,glove or whatever, when the motor is off not running the clutch turns free. jim

 

amx thanks for the info. Yes, I've tried the C3 pulley with 1 shim then 2 then back to 1. Same thing.

But the stock pulley came with 1 shim so I don't think measuring is all that important since its the stock setup anyways.

But yes, with the car off I can spin the pulley without the clutch spinning, or I can spin the clutch with the pulley slightly starting to spin after a few seconds, which is more a result of the shaft's slowing down causing the bearing to slow down and make better contact with the pulley, and end up slightly spinning the pulley. Hope I make sense... The point is they both spin freely of each other.

With the car on though, the clutch is spinning full force and I can't stop it with my hand. I could press harder, but I'm getting no slow down at all with my current pressing.

Sorry if I'm just repeating info over and over, or rambling for that matter, but I just want to get as much across as possible since I'm a bit worried and looking for any kind of info here.

 

Your supercharger could have tight tolerances and is more efficient as a windmill turning with the engines air flow. Do you see that the center is turning at the same speed as the pulley.

With it off mark with a sharpie the pulley and center and start it and stop it to see that they are not in alignment. I suspect your pulley is being drug along by manifold vacuum. Mine suprised me also.

Wanna know, do a Woody. Leave pully on as it normally sits, pop the fan belt off and start the motor, You can run it for a short time with out a belt, I drove home with a belt failure. With no belt the pulley will turn and there is no belt, just for your sanity and sense of understanding.

Woody twisting in the wind again, hee hee

 

Stop it! Yer makin' me laugh!

Can you tell if the clutch is engaged (engine running) or is there a gap between the pulley and the SC wheel?

I'm sure you're just fine.

 

From what I can see there still seems to be a gap. I never really doubted that though since they can spin independantly just fine. its something with the shaft or internally to the supercharger that is worrying me that could cause this to happen.

But, from what Woody said and since all of you aren't pretty calm about it, I'm feeling a bit more relieved. I'll have to pay close to attention to it though...

 

I'm Late to the party, but I noticed this a while ago. Both my stock pulley and Code 3 pulley both spin with the clutch when the engine is idling. I can grab it and it will stop. You can see the pulley operate if you have someone put the car in drive and power bake it up to 1300 RPM. At 1300 RPM under this load, you will see it physically engage.

 

Man! That's some scientific research there! Keep up the good work. ( does the sun really send off that stuff? )