Supercharger replacement / Flutter ?

[hognutz]

I am glad I am not a waranty fanatic at times. it just seem to me that if people fixed the car there would be no complaints.

it like if you buy a 2013/14 GT500 nobody puts the stock POS crap back in the car when the clutch fails or the axels break. they just put a better one in. the stock parts are just close to there limit

99% of the people that hate there car over this blower would love there car over $250-500 spent on an aftermaket solution.


Sometime the facotry fumbles. on this car is the blower isolator/coupler. on the GT500 it is the axels and the clutch.

I know this won't be a popular comment as people get all wrapped around the axel on the cost of this car but there are things I did to my ram truck that cost the same money because the facotry parts sucks.

there is no perfect OEM car. there are times when to make the car right you not just going to drop it at the "dealer" becasue the dealer is going to put the same factory parts on it that you hated to begin with.

[Admiral Ballsy]

Originally Posted by hognutz

this blower would love there car over $250-500 spent on an aftermaket solution.


Sometime the facotry fumbles. on this car is the blower isolator/coupler. on the GT500 it is the axels and the clutch.

Well, how about you tell us what $250 aftermarket solution will fix our problem?

It's not a solid coupler - we have those already.

[2013 ZL1 #7860]

Originally Posted by CRTZL1

I had mine replaced and I don't hear any new unwanted noises.
Wonder why you guys all do..

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Is yours an Automatic?

[2013 ZL1 #7860]

Originally Posted by Admiral Ballsy

Well, how about you tell us what $250 aftermarket solution will fix our problem?

It's not a solid coupler - we have those already.

Honestly, I would still try the aftermarket coupler and see what happens.
Its worth $50 and a little wrench turning to find out and like you said, it would have no effect on the warranty at all.

At that time YOU would have both the GM solid coupler and the aftermarket solid coupler in your hands to compare and take pictures of. You sound like some sort of engineer or something based on your previous posts, so it just might take a little more effort on your part to get to the bottom of this and get an answer that will satisfy you.

The questions you are asking just haven't been answered to your liking yet and likely can't be on this forum.

All I can say is nothing in this world that is man made is perfect. NOTHING. Everything is a compromise and GM did a very good job on the ZL1/CTS V in my opinion.

Let us know what you find out or decide to do. Love to hear about it!

[CRTZL1]

Originally Posted by 2013 ZL1 #7860

Is yours an Automatic?

Negative! Manual....

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[2013 ZL1 #7860]

Originally Posted by CRTZL1

Negative! Manual....

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Well I have no idea then. Just lucky I guess. Maybe by a lotto ticket?

[Admiral Ballsy]

Originally Posted by 2013 ZL1 #7860

Honestly, I would still try the aftermarket coupler and see what happens.
Its worth $50 and a little wrench turning to find out and like you said, it would have no effect on the warranty at all.

I probably will open it up, but I'll find one of two things - either there's a problem with the existing part - sloppy holes or something - or there isn't. If there is, fantastic, an aftermarket part would probably fix it.

But I'd bet my next paycheck there's nothing wrong with it - it's too simple a part to screw up! I'm pretty sure the issue is just tolerance stack at the loose end of things in the drive gears. And that's why some do it but some (probably most) don't.

Originally Posted by 2013 ZL1 #7860

You sound like some sort of engineer or something based on your previous posts, so it just might take a little more effort on your part to get to the bottom of this and get an answer that will satisfy you.

I was, in a previous life. And I do intend to stay on this until I'm either worn out, or I fix it. I'm not expecting answers from this (or any) forum, just looking for more data points.

What I'd really like is to understand what went wrong with the spring unit. I want to know what portion of 2009-2013 cars got the marbles rattle - many, for sure, but...half? Three-quarters? Ten percent?

I read...somewhere, I think on a Cad board, where a vendor was discussing the wear patterns on the shafts of cars his shop had opened up. He was estimating that about 80% of them had significant wear (not necessarily that they were noisy, though) - but that there were at least a few, high-mileage (like over 50K, high for a CTS-V anyway!) with no appreciable wear at all.

So if I knew why the spring setup fails sometimes/often, maybe I can fix that - I've got access to appropriate fab resources that I could make one, if only I knew WHAT to make!

[CRTZL1]

Originally Posted by 2013 ZL1 #7860

Well I have no idea then. Just lucky I guess. Maybe by a lotto ticket?

I do everyday!

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[Kevlar382]

Originally Posted by HDRDTD

Here's hoping that your next vehicle you buy will be absolutely PERFECT in every way for the life of the vehicle.

Don't expect it to be PERFECT for the life of the vehicle, but I don't think it's first 2000 miles is to much to ask.

[2013 ZL1 #7860]

Originally Posted by Kevlar382

Don't expect it to be PERFECT for the life of the vehicle, but I don't think it's first 2000 miles is to much to ask.

Nothing man made is perfect, even when it is new...

Looking for perfection in every single way will only leave you disappointed and lonely.

Good luck with the next purchase...

[CRTZL1]

Originally Posted by 2013 ZL1 #7860

Nothing man made is perfect, even when it is new...

Looking for perfection in every single way will only leave you disappointed and lonely.

Good luck with the next purchase...

Going to have to +1 on this post for sure. True true!!


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[Admiral Ballsy]

Originally Posted by 2013 ZL1 #7860

Honestly, I would still try the aftermarket coupler and see what happens.

I can verify that...nothing happens. The stock 2014 coupler is tight, no slop. An LPE replacement makes no difference at all, although it does look like a more 'engineered' piece.

The 'play' is in the rotor gearset. I think about all that can be done with this is, install a spring coupler and live with whatever those consequences might be, do something that changes the resonant frequency of the system (different pulley sizes for example), or...get a loud exhaust, I guess.

Unless or until GM decides to replace these superchargers with something with tighter gearsets. I'm not holding my breath for that.

[jayno20]

Originally Posted by Admiral Ballsy

I can verify that...nothing happens. The stock 2014 coupler is tight, no slop. An LPE replacement makes no difference at all, although it does look like a more 'engineered' piece.

The 'play' is in the rotor gearset. I think about all that can be done with this is, install a spring coupler and live with whatever those consequences might be, do something that changes the resonant frequency of the system (different pulley sizes for example), or...get a loud exhaust, I guess.

Unless or until GM decides to replace these superchargers with something with tighter gearsets. I'm not holding my breath for that.

I'd still like to hear this sound. Would you classify it as a "rattle" or more like a "shudder"? I know that sounds weird, but I'm just wondering if what I am hearing is for sure drivetrain noise or if it could be this.

[2013 ZL1 #7860]

Originally Posted by Admiral Ballsy

I can verify that...nothing happens. The stock 2014 coupler is tight, no slop. An LPE replacement makes no difference at all, although it does look like a more 'engineered' piece.

The 'play' is in the rotor gearset. I think about all that can be done with this is, install a spring coupler and live with whatever those consequences might be, do something that changes the resonant frequency of the system (different pulley sizes for example), or...get a loud exhaust, I guess.

Unless or until GM decides to replace these superchargers with something with tighter gearsets. I'm not holding my breath for that.

You took yours out and compared it to an aftermarket already?

Maybe an ATI super damper would get ride of some bad harmonics? Just an idea.