blower making crunchy sound?

[SmokinCobra420]

Ok so i just noticed today that my blower is making a not so friendly sound. It sounds like its crunchy but not really loud and the car is running fine. The car has 35k on it and i just changed my S/C oil about 2 months ago, i replaced it with Royal Purple 10w30, I read somewhere on here that it would be ok. A buddy of mine and fellow cobra owner said that it might be the bearings going out. Does anyone have any input about the sound and what may be causing it? I know its coming from the blower because i put my head right about the blower and and its def coming from it.

Thanks guys.
chris

 

[JB]

could be the coupler in the snout
take the belt off and see how much play you have

pic is an M90 Eaton but ours looks the same
as you can see, it's a plastic part...


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[SmokinCobra420]

its sounds more like its coming from the back side of the blower. and is this part known to give and create the sound im hearing? Also, is it safe to drive as long i as dont get into boost?

 

[kezell]

It could be the rear bearing, the ones that supports the rotors. Is this blower ported? I only ask because I remember when I first started porting mine and put it all back together I didnt clean the bearing out good enough and heard the noise.

 

[SmokinCobra420]

no its not ported, got 35k miles on it, but they are some hard miles. I changed the S/C oil about two months ago and i put royal purple 10w30 in it cause i read on here that it would be fine, not sure if this is the problem or if the parts are just getting worn, cause i run a 2.76 on it, and again i run the car hard 75% of the time i drive it. This may just be a sign that its time for a Posi port

 

[kezell]

If you have time I would pull the belt off and spin the blower by hand and see if you can hear the noise. I am sure it wont be as noticable but you never know....either way you need the posi port.