• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Loud obnoxious whine from supercharger

T

TheBeastGTP

New member
99 GTP
3.4 pulley and supporting mods

Just recently, expecially on cold morning startups my supercharger has got this growly whine-not the good kind. Kinda sounds like when your power steering pump is going. I probably need a new coupler eventually, but i dont think this is the problem. Its getting worse, i checked the supercharger oil and its a bit low. Could it be my bearings going out or what:th_scratchhead:. Please help, im thinking about pulling the belt off till if fix the problem. Damn, no boost is going to kill me

THANKS
 
Last edited:


Re: Loud obnoxious wine from supercharger

so you have a intake on the car right??

does it sound like the a shovel being dragged acrss the ground??

if so thats normal
 
its not my intake, its a whine coming from supercharger. No scraping or clanking. I know what a bad coupler sounds like and the whine is louder than my intake now. You would think whine would be good, but this is so not good sounding.
 
^^MAFAKIN RIOT!! YOUR SIGNATURE LMAO!!!

Awesome.

Anywho...I voted needle bearings a long time ago on Nawar's car...I bet that's your issue.
 


Does it sound more like this???

YouTube - scream of death?

Thats the noise i recently just started getting and its a once i a while thing. Ive been searching and reading all over the place and many are saying it could be a blocked PCV Valve or something but definitely pcv related.
 


Well first step is to take the blower belt off and see if it goes away.

If people say it could be the PCV then take the valve out and shake it. If it rattles its prolly good.
 
I recently had this issue and thought it was a million other things before I bought a new PCV valve or if you installed a VC breather...my noise went away.
 
I did remove the belt and the whine went away.The whine sounds like its coming from the pulley on the blower.I will change out the pcv, cheap enough.I contacted magneson about a rebuilt snout and they dont have any available.Any hep will be appreciated.Thanks
 


Did you replace the supercharger belt when you replaced the pulley?

667 - GTP/GS/SS supercharged with stock 3.8" pulley (67 1/4" -1708mm)
658 - GTP/GS/SS supercharged with 3.2 - 3.5" pulley (66 3/8" - 1687mm)

difference in length ( 7/8" - 21mm )

With an old belt, the extra slack + reduced contact on the s/c pulley the belt could easily be slipping on cold startup. Just want to confirm it is not the belt before throwing money at the snout.

(I have a newer oem belt on a 3.5" and it will occationally squeak at startup.)
 
The belt is new as of two months ago.Its a Gates belt. The pulley is stock and I have not replaced the pulley.I did change the oil in the blower as soon as this noise began and yes there was oil in it.Smells horrible, new or old.Dont get any on you,it stays with you all day. If rebuilding the snout is possible myself does anyone have a source for the parts?I do have a press and a fair amount of ability But my alldata just covers blower replacement not rebuild.
 
You must log in or register to reply here.
Back
Top