Strange noise in my KB 2.2L (video clip)

[Mike681]

So I was able to get a video where you can hear the strange noise my supercharger is making. There's no play in the pulley, so do you think it may just be low on oil? And sorry for the poor video quality, but you can hear the noise for sure. Thanks.

KB22Noise_zps7511cb35.mp4 Video by Mike6813 | Photobucket

 

[kmadona]

Does it make the noise with the belt removed spinning the pulley?
Is that the old 2.2?

 

[Mike681]

No it does not make the noise with it removed, while spinning the pulley. It's smooth with no lash or play in it. KB doesn't think it's the supercharger, given that my oil, albeit low, is clean, and everything seems to be fine while spinning the pulley by hand.

I'm going to send them my supercharger, but wanted to see if anyone has experienced this too.

Yeah it's the older style with the oil catch can:

 

[Senkak]

I would remove the belt and start the car to see if you can hear the sound.
My guess is it is not the blower.

 

[Mike681]

I would remove the belt and start the car to see if you can hear the sound.
My guess is it is not the blower.

You may be right. What do you think it could be?

When I put my hand around the snout, I can feel it right in there just before it meets the sc unit. Put my hand on other areas of my engine, and the supercharger unit itself, and it was not there. All this literally happened right after I put Metco idler pulleys and a new belt on. Had the car two months.

I actually already unbolted everything in order to send it off to KB, would this be unwise? Otherwise I was going to have JPC in MD look at it.

 

[Senkak]

You may be right. What do you think it could be?

When I put my hand around the snout, I can feel it right in there just before it meets the sc unit. Put my hand on other areas of my engine, and the supercharger unit itself, and it was not there. All this literally happened right after I put Metco idler pulleys and a new belt on. Had the car two months.

I actually already unbolted everything in order to send it off to KB, would this be unwise? Otherwise I was going to have JPC in MD look at it.

It is hard to say but if you had no problem before the idlers and belt I would check there first.

I would not waste the $$ to send the blower until you make sure it's the problem.

 

[Mystic03]

i would remove the snout and look at the green coupler that could be worn

 

[Mike681]

I may move on to do that, even though it can't be too bad since there's zero play in the pulley. Even a little worn could do it I suppose. It's an easy inspection so it can't hurt.

 

[speeddemon2000]

Check all of you idler bearings. I had a bad sound that I thought was coming from my blower. It was actually a bad idler bearing.

 

[Mike681]

I'll check that too. My supercharger isn't pulling as hard as it used to under boost, so I'm not sure this is it. But at this point, I'll check anything out!

Literally, when I hit the gas to engage the supercharger, it doesn't have that increasing whining noise, it's like the sound decreases in pitch, if that makes sense...like it's struggling or something.