Magnuson supercharger rattle

[BigV8]

Well it seems that all of sudden one day I started hearing a faint rattle noise at idle. its gotten a little louder but still is not real loud. I searched on the internet and there has been some, but most were not the style we have on our cars. There also was nothing on the Camaro5 forums about it. The rattle can be heard near the front part of the maggie. I plan on calling Livernois first to see if they have heard of this, then Magnuson. If anyone might know something it would be great to hear. Also, I have 23k miles on the maggie and it still runs great.

[WickedMom]

Could the tensioner be failing?

[Billygoat]

If you still have the stock drive belt put it on to see if it's the supercharger or something else.

[BigV8]

Could the tensioner be failing?I checked it when I did the a/c bracket mod and it was fine. I had Aden listen to it and he also thought it was coming from inside the maggie. Its can be heard best from the drivers side, from the front to the mid section.


If you still have the stock drive belt put it on to see if it's the supercharger or something else.Yea good idea but I don't have the old belt. It can be heard more up at the top of the maggie and from the drivers side.

[Greg@PacePerformance]

Pull the belt off and turn the maggie pulley by had. When my bearing went bad it had a very slight flat spot I could feel when turning the pulley. Once I removed the rear drive belt and turned the pulley again I could still feel the spot and could also hear it when I would spin the jackshaft by hand quickly.

I suggestion is to start there. It sounds like it might be a bad bearing like mine had.

Edit
If it is just at idle and not RPM based then my guess is a bad tensioner also

[Dyno Dan]

It's not the "Maggie Growl", is it? Can you hear it from inside the car, like it's coming through the back of the radio area when you're idling? Looks like you were a part of this thread originally, but don't rule this out:

http://www.g8board.com/forums/showthread.php?t=21765&page=2

[BigV8]

I pulled the belt and turned the shaft and it was smooth. I could get a noise if i turned it back and forth. I plan on running it today with the belt off to rule out pulleys. I' ll report back. Magnuson did not say they could tell me anything till i tell them what i find. Rick at Livernois said they have not had anyone but one guy that had a Silverado and he put 200k on his before he had it rebuilt, wow.Thanks for the help people!

[Greg@PacePerformance]

There is some gear clash when you turn the shaft back and forth so I would say that is normal.

[BigV8]

There is some gear clash when you turn the shaft back and forth so I would say that is normal.Thanks Greg, I was wondering about that. It made no noise when I started it but that does not rule out the idler or tensioner pulley. Guess I may need to get a stock belt to rule them out. They spin by hand fine with no wobble. I don't know if anyone else has as many miles on theirs? I check the Camaro5 forum.

[WickedMom]

On the GTO boards there are a couple 100k+ mile blowers. Good thing is that at 23k you are under warranty still


Sent from my insanely great iPhone 4s using Tapatalk

[BigV8]

On the GTO boards there are a couple 100k+ mile blowers. Good thing is that at 23k you are under warranty still


Sent from my insanely great iPhone 4s using TapatalkI put a stock belt on and there was no noise, so that rules out the tensioner. David at Magnuson didn't really know what else to say. I guess I'll just keep running it and keep an eye on it. The warranty is up in January so i'll figure out by then if I'll pull it and send it in, I don't really want to do that thou.

[WickedMom]

Can you spin the front and rear pulleys and see if maybe a jackshaft bearing is making the noise? Greg @ pace had one of those go bad.


Sent from my insanely great iPhone 4s using Tapatalk

[BigV8]

Can you spin the front and rear pulleys and see if maybe a jackshaft bearing is making the noise? Greg @ pace had one of those go bad.


Sent from my insanely great iPhone 4s using TapatalkYea I talked to Greg and my noise is different.

[WickedMom]

So, do you feel binding of you spin the rear pulleys when the rear belt is removed?


Sent from my insanely great iPhone 4s using Tapatalk

[BigV8]

So, do you feel binding of you spin the rear pulleys when the rear belt is removed?


Sent from my insanely great iPhone 4s using TapatalkI didn't try it with the rear belt off. I couldn't hear or feel any noise coming from the bearings at either end with the rear belt on. I will try that if the noise gets any louder thou. Thanks for the reply.

[WickedMom]

No worries. Do you think it is actually rotor contact?

[BigV8]

No worries. Do you think it is actually rotor contact?Thats what I'm thinking. I may pull it by the end of the year so magnuson can look into it and maybe get an idea what other people my run into since mine is only one making the noise with low miles.

[hflores3]

Thats what I'm thinking. I may pull it by the end of the year so magnuson can look into it and maybe get an idea what other people my run into since mine is only one making the noise with low miles.

Is it a "rattle" or a "ticking" sound?

As goofy as this may sound........... I had a very pronounced ticking sound coming from my Maggie after some work. Sounded like it was coming from the front of the Maggie.

a) Removed belt and started - ticking
b) Turned it by hand - check.
c) I loaded videos to this forum - it was driving me crazy!!

Turns out that my battery was so damn low that a solenoid was making the ticking noise. Battery would not hold a charge (bad battery). Replaced the battery. Never heard the solenoid and ticking again!!!

Goofy - eh? Fact.

[BigV8]

No its not a ticking noise. I made a video but I had the camara to close to the engine and you couldn't hear the noise, just all the injectors, so I'm doing another one tomorrow. It seems to be louder when the engine is cooler.

[BigV8]

Here is a video of the rattle
http://www.youtube.com/watch?v=76nExUTxA9E

[hflores3]

I'm serious....it sounds eerily similar to the ticking sound I had when I installed my Maggie!!

[hflores3]

I will see if I can find the video I posted to YouTube (when my Maggie was "ticking") ..... you can then determine if the sounds are similar. My "ticking" sound were also from up front. It was a solenoid that was ticking loudly.

[LS1_Disciple]

I hear the ticking, but mine does that too. I think he's talking about the low-pitched thunk every now and then. It doesn't sound very regular like the ticking does. Like the sound a loose flap would make if he were driving.

BigV8 - is that the rattle you're referring to?

[BigV8]

I hear the ticking, but mine does that too. I think he's talking about the low-pitched thunk every now and then. It doesn't sound very regular like the ticking does. Like the sound a loose flap would make if he were driving.

BigV8 - is that the rattle you're referring to?Yes thats the sound. Its in the background so to speak.

[BigV8]

Looks like I'm going to pull the maggie, hopefully this week and send it to Magnuson, its seems to be making some other strange noises. If i don't get to it this week I won't be able to get to it till a week after Labor Day which means my chances of making G.O.N.E 2012 is nil.

[daniel9357]

I just noticed yesterday mine is making a deep rattle sound too, let me know what they find out. Hope its nothing serious. I have about 10-15k miles on mine. and its about 13 months old.

[G8-4-Speed]

It almost had a quiet "rod-knock" sound inside the blower. It sounds like the rotors or gears have something that just not right with them. Almost like a gear with a chipped tooth.

[BigV8]

Yea Rick, thats another way of putting it for the noise. Waiting to hear from Magnuson today.

[LS1_Disciple]

Yea Rick, thats another way of putting it for the noise. Waiting to hear from Magnuson today.

Find out anything yet?

[BigV8]

Find out anything yet?Nope. Called again today.

[WickedMom]

Do they have the blower now? When did they receive it?


Sent from my insanely great iPhone 4s using Tapatalk

[BigV8]

Do they have the blower now? When did they receive it?


Sent from my insanely great iPhone 4s using TapatalkI have not taken it off yet. I was waiting to hear from Dave about how to send it back, and making sure its covered by warranty.

[WickedMom]

Be sure to have him send a shipping box. :) unless you kept your old boxes.


Sent from my insanely great iPhone 4s using Tapatalk

[BigV8]

I thought I'd update this post. I pulled the maggie today and shipped it to Magnuson. Hopefully they find out what was causing the noise. I won't hear back till after the holidays since it won't be there until the 4th.

[BigV8]

latest update. I'll have the maggie back on monday. This what magnuson said was the problem: "It was the bearing in the nose cover (rear of the SC) it went out and the metal flake got into the SC and into the rotor bearings." Seems like an isolated case(My luck). I'll report back again after its installed

[Greg@PacePerformance]

WOW glad it was still under warranty.
The bearings they use are good quality, but I'm not sure if they are speed rated high enough. I'm not sure what the actual rotor speed is but when I had the jack shaft bearing go bad it was rated to something like 7500 rpm and doesn't seem high enough depending on engine rpm and pulley used.

[wreckwriter]

At least you'll be together in time for ECS :)

[BigV8]

WOW glad it was still under warranty.
The bearings they use are good quality, but I'm not sure if they are speed rated high enough. I'm not sure what the actual rotor speed is but when I had the jack shaft bearing go bad it was rated to something like 7500 rpm and doesn't seem high enough depending on engine rpm and pulley used.Magnuson did mention that using a smaller pulley is not covered, but when I said Livernois installed it, he said they would cover it. WEW that was a relief.


At least you'll be together in time for ECS :)Yes. Have to give thanks for that.

[MIEngineer]

Anyone source bearings or spares for these things? A friend of mine asked me about it, as he has one and out of warranty so he may pull it to freshen it up.

[wreckwriter]

Magnuson did mention that using a smaller pulley is not covered, but when I said Livernois installed it, he said they would cover it. WEW that was a relief.

Yes. Have to give thanks for that.

They offer different pulleys but don't cover them? that's chickenshit.

[Greg@PacePerformance]

Anyone source bearings or spares for these things? A friend of mine asked me about it, as he has one and out of warranty so he may pull it to freshen it up.

I pulled the part numbers from the jackshaft bearings and sent them to Jessika so she should be able to sell you the correct bearings for replaceing those. I haven't been any deeper thankfully.

[sacsrpc]

Anyone source bearings or spares for these things? A friend of mine asked me about it, as he has one and out of warranty so he may pull it to freshen it up.

Your best bet if he needs them quick is Ducomb Bearing in Detroit. They should be able to id it and chances are they will have i in stock. I started using them instead of Grainger anytime I need odd bearings.

[Greg@PacePerformance]

Yes the bearings are pretty readily available and inexpensive.

[norm8332]

One question for op, did they have any guess as to the cause of the be bearing failure?

Anyone else: I can't recall, the sc oil can be changed if the sc is removed? I thought there was a plug or something.

Thanks

[MIEngineer]

Will be a while before I have an issue [or before it is installed at that], just curious.

[BigV8]

One question for op, did they have any guess as to the cause of the be bearing failure?

Anyone else: I can't recall, the sc oil can be changed if the sc is removed? I thought there was a plug or something.

ThanksThey didn't say what caused it. When I pulled it I looked for a plug that you could pull and didn't see one. You would think there would be lube, front and rear.

[Greg@PacePerformance]

There is a plug in the rear to fill with oil.
The front doesn't have a plug because there are not any gears up there, only two bearings for the rotors.

[BigV8]

Well the maggie is back on. Aden came by last night and helped me swing it back on. I finished it up today and took it for a drive and it sounds just like it did the day it was first put on. Hope nobody else has this issue, it sux having the GXP down for a month.

[WickedMom]

MM. Aden is dreamy.


Congrats on getting it going again.