waunavet

I owned a C5 and C6 and now looking to buy a C7. I insulated the wheel wells and cabin of each car for heat rejection and road noise. Is there a need to do this with the new generation?

WelderGuy

What did you use to insulate the wheel wells?

mdiiulio

I assume he means around the inside of the wheel wells in the interior of the car, under the carpet. This was popular in C5s for noise reduction. I did it in mine and used a foil-faced foam matting and dynamat. It worked well if done right


And to answer the thread... I've found no need so far, especially since I plan on moving to non runflats after these stockers are done. But it is something I may look into in the future, especially if pre-cut kits become available... It's just so easy that way that it becomes more of a question of why not?

BIG Dave

The outer wheel wells in the C7 are covered in a carpet-like material. It does a good job of cutting down the road noise, although I doubt it does anything for heat rejection.

Sneakytoot

No need to insulate the exhaust tunnel as GM has put the product Areogel
which keeps it real cool went on a trip 900 miles straight and no heat inside car.Z51 coupe...

beepster

Absolutely!! I installed a full insulation kit on my C6 coupe and ran it about 5 yrs...made a world of difference (on the road noise) and improved even more when I replaced the GY fun flats w/ Firestone A/W. Fast forward to Mar 2014 when I sold the C6 and got the C7 coupe: Road noise is still a major factor! I have so far not been able to locate an insulation kit for the C7 coupe...but it needs it badly depending on the road surface of where you live (and drive). Again, I think the factory RF tires are also a factor..

mdiiulio

You're not the only one searching. Did it on my C5, worked great. After I run through these runflats I'll see if I still want deadening with non-runflats mounted.

WelderGuy

So that's between the wheel well and the tire, not inside the engine bay or cabin?

Crossed Flags Fan

Yes that's correct. Outside

waunavet

Dynamat. Gotta use something that won't absorb water. Also on the C5 and C6, the space around the gas filler pipe allows a lot of noise to enter the cabin. When I talked about insulating the wheel wells, I meant putting material under the liner. Couldn't use material over 3/8 thick in those cars.
Where's Crazy Cowboy with his frost king-like material for the cabin area? Not the best solution but certainly the easiest and most price conscious way to tackle the job. The key to reducing road/tire noise inside the car is to reduce vibration.

waunavet

Absolutley no question about the RF's being louder than non RF's. To see if insulation might help quiet your car.....take a couple opened sleeping bags and spread them across the rear carpet and wheel humps. Then drive down the freeway on some worn, non-grooved cement pavement. Hear that? It's your Bose radio with some bass!

beepster

I talked w/ Crazy Cowboy a few months ago (when I first got the C7) and at the time he had been unable to locate a "donor" car in order to make the patterns...seems no new C7 owners in FL are willing to part with the the baby for a few days while the interior is totally dismantled...

Meanwhile back in TX...seems like the state is on one big austerity kick and is using a road re-surface technique called "chip and seal". This creates a rough road surface and increases noise level inside the car by about 300%. Thank you for those savings in tax dollars!!

Spinny

I live in Lago Vista and could not agree with you more. Texas seems to have the the record for noisy road surfaces.

C8Jake

Rattetrap Xtreme...well worth it

bbrown450

Used Fat Matt behind seats and cargo area big difference in quality of Stereo and road noise 2 hours of work and 60 bucks in stuff

Glen e

This was done by me and others a few months ago and posted here:

https://www.corvetteforum.com/forums...ening-mod.html