Thread: supercharger rattling at low rpm

the gm oil is cheap, i bought 2 bottles and it was under $10. but I'm in Calgary Alberta

Its exspensive in Australia & Holden in general are very exspensive when it comes to parts ,there are even cases of parts made here by Holden being cheaper to buy from the US even with the shipping, I mean you can save heaps

Originally Posted by vsl67

Im going to hope everyone is right and it is the coupler but what you are describing is also the same as stuffed rotor bearings especially if its really loud at idle heres some videos of mine with the rattle before I replaced the rotor block bearings

YouTube - Eaton M90 rattle

YouTube - Eaton m90 supercharger rattle no 2

I know this thread is old, but I am trying to figure out my noise. That actually sounds a little more like the noise I am having. I took the belt off and the noise is a little less, but not gone. Did you just replace all the bearings to fix it? Is this a DIY job or does it require special tools?

So that a holden you are driving? Love the whine of your blower. Do you have it ported or have you done anything to make it sound like that?

The pulley feels tight, so I am guessing it is not the coupler as I originally thought. I do notice that the pulley spins while the engine is running, I guess just the air flowing from the intake turning the guts of the blower. It is fairly strong if I snap the throttle. Is this not enough to cause the bearings to make noise? I can try taking off the other belt and see if the noise goes away. It does seem to be quieter, but did not go away with taking the SC belt off.

Originally Posted by 40th GP

I know this thread is old, but I am trying to figure out my noise. That actually sounds a little more like the noise I am having. I took the belt off and the noise is a little less, but not gone. Did you just replace all the bearings to fix it? Is this a DIY job or does it require special tools?

So that a holden you are driving? Love the whine of your blower. Do you have it ported or have you done anything to make it sound like that?

Thanks Im not entirely sure why mine whine it way its does,But its has a ported TB & supercharger ,4inch tubing and pod and a custom billet rotor block with the recesses in front of the rotors elinimated ,I dont think I have any videos with the last mod yet it made a bit more whine
As for your charger if you disconnect the belt try and stop it from spinning ,I once had a supercharger rattle that kept going even after the belt was disconnect just from the motor spinning the rotors by sucking air through them while driving ,but if its rattling this bad generally you will hear or feel it when you spin the pulley by hand

+8 Coupler of Resounding Rattle.
That will go well with your +6 Two Handed Sword of Cleaving.

Want a video on how to replace a coupler? Check this out...
http://www.youtube.com/watch?v=pSsSctYvOoI&feature=related

Oh, and if you drink a little flask of supercharger oil, you'll increase your Dexterity by +3.