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Supercharger lid sound dampening?

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Old 08-15-2018, 01:50 AM
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Cobra2Z
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Default Supercharger lid sound dampening?

I was over looking around the ZL1 forums on Camaro 6 and there were a few threads about a black piece inside their supercharger lids that appeared to be just for sound dampening purposes. However, I searched the forums here and haven’t seen any mention of it here. Are there lids on the ZL1 perhaps a little different than the Z06? I have read other “increase whine” threads here as well and don’t remember any talk about the lids.

Still would love to make this thing scream. I came from a 03 cobra with a 2.2 Kenne Bell which was the blower notorious for screaming. Hopefully, the smaller upper and porting the blower/snout will increase the whine?!

-Jason
Old 08-15-2018, 07:19 AM
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Mr. Gizmo
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I would like a little more supercharger whine too.
Old 08-15-2018, 07:44 AM
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Warp Factor
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Originally Posted by Cobra2Z
I was over looking around the ZL1 forums on Camaro 6 and there were a few threads about a black piece inside their supercharger lids that appeared to be just for sound dampening purposes. However, I searched the forums here and haven’t seen any mention of it here. Are there lids on the ZL1 perhaps a little different than the Z06? I have read other “increase whine” threads here as well and don’t remember any talk about the lids.

Still would love to make this thing scream. I came from a 03 cobra with a 2.2 Kenne Bell which was the blower notorious for screaming. Hopefully, the smaller upper and porting the blower/snout will increase the whine?!

-Jason
The Z06 has a plate on the underside of the supercharger lid, over the supercharger discharge port. Those here who removed it said that it didn't make much difference in the sound.
I think the main reason the Z06 supercharger is so quiet is that the intake air is drawn from the inside of the fender well, and that muffles the sound coming from the intake pretty well. The Z06 blower probably has more rotor twist than your Kenne Bell blower too, and that tends to smooth air flow and create less pulsing, making things quieter.

The Chrysler blowers are quite a bit louder, but their intakes go directly to the front of the car, or through the hood opening, rather than the inside of the fender well.
Old 08-15-2018, 10:44 AM
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wagoetzmann
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I removed mine and tested....no more whine than with it.....so I put it back.
Old 08-15-2018, 10:57 AM
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davepl
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I've removed everything they've claimd and all together it made almost no difference. I'd like some SC sound as well, but I've not heard it from this blower. I guess they did a GREAT job on NVH!
Old 08-15-2018, 11:09 AM
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Nothing under the lid of a 19. Although at low rpm you can hear an audible whine in the cabin at light loads. This is with the 18% overdrive crank.
Old 08-15-2018, 11:44 AM
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Bill Dearborn
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Removing it could change air flow characteristics inside the S/C. Those changes may not be beneficial. The piece may be there to smooth/direct air flow as it twists through the S/C.

Bill
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Old 08-17-2018, 12:07 AM
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Originally Posted by Bill Dearborn
Removing it could change air flow characteristics inside the S/C. Those changes may not be beneficial. The piece may be there to smooth/direct air flow as it twists through the S/C.

Bill
Ahh good point, didn’t think about that aspect.

Originally Posted by DAVE396LT1
I've removed everything they've claimd and all together it made almost no difference. I'd like some SC sound as well, but I've not heard it from this blower. I guess they did a GREAT job on NVH!
Lol right, I’m like next time can we have a poll on who wanted the blower to be quieter.

I have an AFE intake and going to be getting a 103 TB, 2.31 upper, and Kong porting soon. Can I please get a side of blower whine too? Hoping I hear an increase after this!

-Jason
Old 08-17-2018, 12:20 AM
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Originally Posted by Cobra2Z


Ahh good point, didn’t think about that aspect.



Lol right, I’m like next time can we have a poll on who wanted the blower to be quieter.

I have an AFE intake and going to be getting a 103 TB, 2.31 upper, and Kong porting soon. Can I please get a side of blower whine too? Hoping I hear an increase after this!

-Jason
Awesome!! I just posted some details in another thread regarding a lot of new info on porting... tell you what.. pulley, intake, CNC ported, and 103mm tb, the blower screams!

https://www.corvetteforum.com/forums...-the-test.html
Old 08-17-2018, 05:34 AM
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Originally Posted by Greg@KongPerformance
Awesome!! I just posted some details in another thread regarding a lot of new info on porting... tell you what.. pulley, intake, CNC ported, and 103mm tb, the blower screams!

https://www.corvetteforum.com/forums...-the-test.html
Oh man, this just made me that much more excited to get the mods done!!!
Old 08-17-2018, 08:10 AM
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do the nx billet lid, the blower will scream then.
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Old 08-17-2018, 02:35 PM
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BigNastyZO7
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Originally Posted by Joe@CPR
do the nx billet lid, the blower will scream then.

Yes my blower is noticeably louder, upper pulley and blower fully ported to 103 to match katech throttlebody

Last edited by BigNastyZO7; 08-17-2018 at 02:36 PM.
Old 08-17-2018, 10:16 PM
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Originally Posted by Joe@CPR
do the nx billet lid, the blower will scream then.
Yeah I just can’t justify $900 just for the sound; however I have been tempted haha

Originally Posted by BigNastyZO7


Yes my blower is noticeably louder, upper pulley and blower fully ported to 103 to match katech throttlebody
Your engine bay looks super clean and nice!
Old 08-20-2018, 08:52 PM
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BigNastyZO7
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Originally Posted by Cobra2Z


Yeah I just can’t justify $900 just for the sound; however I have been tempted haha



Your engine bay looks super clean and nice!
Thank you
Old 08-21-2018, 12:27 PM
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timmyZ06
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what is cool with NX lid is direct port meth injection!
Old 08-21-2018, 12:28 PM
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Originally Posted by Joe@CPR
do the nx billet lid, the blower will scream then.
does it really getting more louder than stock lid?? I mean, something that you'll hear!!
Old 08-21-2018, 01:19 PM
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yes by a lot!

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Old 08-21-2018, 01:48 PM
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Warp Factor
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My conclusion from these videos is that a microphone placed near the front of the car, with the hood open, will pick up quite a bit of blower noise. But when placed more toward the rear of the car, almost no blower noise will be heard.
(Yes, I've already sorted out blower noise from dyno noise.)
So what are these videos supposed to demonstrate?
Old 08-21-2018, 02:52 PM
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Originally Posted by Warp Factor
My conclusion from these videos is that a microphone placed near the front of the car, with the hood open, will pick up quite a bit of blower noise. But when placed more toward the rear of the car, almost no blower noise will be heard.
(Yes, I've already sorted out blower noise from dyno noise.)
So what are these videos supposed to demonstrate?
i gain nothing by someone buying these, literally don't carry NX so make zero money off this. I'm telling you in the car the blower is a lot louder.
Old 08-21-2018, 04:04 PM
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Warp Factor
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Originally Posted by Joe@CPR
i gain nothing by someone buying these, literally don't carry NX so make zero money off this. I'm telling you in the car the blower is a lot louder.
Are you able to explain why? When I mod my vehicles, my fisrt choice is to work with people who can provide solid explanations. Same thing in my "small business", and that strategy has worked out so far. Not that I can't buy things at wholesale (or below, even for things I don't "carry"), and pretend that I am offering someone an exceptional deal.

Last edited by Warp Factor; 08-21-2018 at 04:16 PM.


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