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Old 01-07-2019, 01:09 PM
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nickcornilsen nickcornilsen is offline
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Default Carpet, Sound-deadening, and undercoating

Hi,

I need to start thinking about undercoating and the interior of my car.

It has very, very custome floorboards... due to installing C5 'vette suspension under it, and wanting to slam the car as low as possible while maintaining a reasonable ground clearance.

What I'm curious about is how to finish the interior of the car. Obviously a molded carpet kit won't work. Has anyone formed their own? Am I going to have to make a series of pieces to fit around the geometry? If so, what does it take to bind the edges of the carpet to look reasonable? Where can I get carpet?

To a certain point, I can use jute or carpet insulation to bridge over and even out some of the geometry here, of course.

The other option is to use Rhinoliner or something to do the interior. (I intend to coat the underside of the car with it.) But, I can't imagine that will deaden sound very well. I intend to make this a drivable car, one my wife won't absolutely hate riding in.

Thoughs? Experiences?

Thanks
-Nick
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Last edited by nickcornilsen; 01-07-2019 at 01:12 PM.
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Old 01-07-2019, 04:36 PM
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I plan to use raptor-liner underneath my car, but just recently I used it on the interior also.

I wouldn't think it would do much for sound suppression, but it does prevent steel reverberation and helps to seal the cabin up even better. I plan to insulate on top of it and finish with carpet, but my car is a whole lot closer to stock than yours.




There is so much going on in your interior I think foam shaping will be your friend to simplify some of the panels to make carpeting a whole lot easier.
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Old 01-07-2019, 07:12 PM
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I would suggest using Dynamat Extreme and then installing a layer of 1/4" thick Dynaliner. I did this to mine and it was worth every penny. In my opinion, installing the Dynaliner on to of the Dynamat made a bigger difference then installing the Dynamat on the metal. My car has zero rattles, no road noise and is quite pleasant inside, especially with the windows up.

Once you've got the sound deadener down, I'd suggest making some panels to fill in the "voids" in the floor and level things out a bit...that'll make your life easier with regards to the carpet. I made some filler pieces to go around my subframe connectors to flatten things out and I'm glad I did, has a much tidier look. Just my $.02!
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Old 01-13-2019, 10:24 PM
Tony V Tony V is offline
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Quote:
Originally Posted by Gmachine1911 View Post
I would suggest using Dynamat Extreme and then installing a layer of 1/4" thick Dynaliner. I did this to mine and it was worth every penny. In my opinion, installing the Dynaliner on to of the Dynamat made a bigger difference then installing the Dynamat on the metal. My car has zero rattles, no road noise and is quite pleasant inside, especially with the windows up.

Once you've got the sound deadener down, I'd suggest making some panels to fill in the "voids" in the floor and level things out a bit...that'll make your life easier with regards to the carpet. I made some filler pieces to go around my subframe connectors to flatten things out and I'm glad I did, has a much tidier look. Just my $.02!
Shane, that carpet kit looks great, what brand/type did you get and did you need to trim it?
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Old Yesterday, 11:55 AM
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I like to use the dyna mat type stuff first and then the two sided foil with the insulation in between. I just buy it bulk and cut to fit.

As said above fill in the voids so the floors will be flat.

I haven't done it but I think the custom interior guys make the carpet in sections. So the tunnel and floor pieces separate pieces. Then they add ribbing? to the edge to make it look finished. I know locally the carpet shop can add ribbing to custom cut carpet pieces.
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