I picked up some spray undercoating for my dually today and though about the C6 and if it would benefit from having the coating on the bottom side of the floor pans and rear tub.

I have used this undercoating before and it cures to about a 1/8" thick flexible but dry finish.

I am starting to do some sound deadening through out the car and just thinking this could really quite things down a bit as well. Nothing really serviceable would be coated so having to deal with it later during a repair shouldn't be a problem.

What's your thoughts?

 

I wouldn't do it.

Bill

 

Absolutley not!

 

Sounds okay to me. Other than the obvious drawback of extra weight, I don't see any problems with it. I'd like to know why other other guys think this is a bad thing

 

How flammable is it? Personally I would install the foil backed insulation to the interior if you want to cool things down and get a little sound deadening.

 

It's not any more flammable than on my dually. I am deadening from the inside as well and I believe the entire underneath could be did with 3 cans so adding about 3 lbs to the weight of the car.

I'm thinking primarily the floor boards and the bottom of the tub. Road noise should be reduced considerably.

 

If you're not concerned with weight (racing consideration), here's what I can tell you. I've used the spray undercoating in the past on my 4x4 on the undercarriage because it does (2) things. It does provide sound deadening and prevents rust. Rust is not a consideration on the corvette unless you DD in all weather elements. There are advantages to its' use in certain areas of the car, though. The inside surface of the doors, for example. When I did this in the past, it not only decreased outside road noise but it made a DRAMATIC difference on the sound coming from the door speakers. You need to spray it CAREFULLY, though, because the nozzle will spit at times and it can get messy real fast. Using on wheelwells will provide sound deadening but it will look unsightly, so here's my advice: If you do choose to use it in areas like that, I would spray it on the underside of the wheelwell liners so it can't be seen. I can't think of any other place where you could use it without leaving you with an unsightly finish. As mentioned above, there are several Forum vendors who sell the heavy density, lightweight insulation for floors, rear compartment and the like. Madvette in Tennessee is one of them. Because of the surface area of those areas in the car, insulating those areas will provide you with great sound deadening, and temperature retention inside the cockpit, and better sound from your radio.

 

I can't see how it would reduce road noise at all.

Tom

 

POR-15?

I wouldn't put an underliner on any car that didn't come with it already. The main advantage of using an underliner is to prevent rust (and to a lesser extent, sound insulation). Most of a Corvette is NOT steel, so won't rust.

If you were doing a frame-off restoration of the C6, I'd say coat the chassis if it's a steel-framed base model. Other than that, I wouldn't bother.

 

nope
It will do nothing for you !

 

I would research the product before I sprayed any on the inside of the doors. My C5 had to have the rear hatch replaced because of some factory chemical that seeped through the fiberglass and bubbled the paint.

I like the idea of being able to spray the inside of the doors because it will probably cover easier than the foil backed foam.

 

There are some specific outside coatings for wheel well liners to reduce noise, but I bet they are just re-marketed undercoating. Just make sure the coating is plastic compatible.

 

Just like most noise dampeners it makes the piece it's being applied to heavier so it vibrates at a lower freq, and a coating on the outside of the wheel well liner also reduces the noise from rocks and stuff that hit the liner. It also makes the liner thicker so ambient noise is reduced. Imagine the small string on a guitar and now add 5 lbs to it, it will still vibrate but you probably won't hear it.

 

Nooooooooooooooooooooooooooooooooooooooo oooo!!!!!!!!

 

no way...