sound proofing a prerunner

[charlie_brown]

I have a linked/caged street driven prerunner that I just took it out on its first long highway drive (the more race) and my ears and head were killing me with the noise coming from the cage. Does anybody know how I can make it more tolerable on long drives. I drive this truck to/from and prerun the races. Right now I have sprayed in “lizard skin” ceramic coating over everything inside (works great for the heat) and a factor rubber with insulation on the floor. Can some help out?

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[Curtis Guise]

my best investment was the intercom that I installed!

I did put that thin air bubble insulation that has a foil looking layer on each side of it on the roof, floor and back of the cab so far. I think it helped a little.

[steveG]

I used to have an extremely loud V8 Ranger with minimal interior. Anything more than about 20 minutes of freeway driving got reeeaaaaalllllyyyy old. A long drive would leave you with ringing ears and feeling beat up (from the noise, not ride). I started using disposable foam earplugs that blocked out damaging (and tiring) noise but still allowed conversation with other occupants without yelling.

I know that's not the kind of suggestion you were after, but it's a cheap fix that will make driving your truck long distances a pleasure.

[J.JOHNSON]

Lin X The Entire Inside. Then Use The Insulating Material Found At An Interior Shop And Install Carpet And The Headliner Over As Much As Possible. That Is About As Good As You'll Get It.

[jesusgatos]

My experience with Line-X on the interior of one of my old Jeeps was TERRIBLE. It separated from the sheetmetal and moisture collected in the seams. It promoted rust more than it prevented it and made bodywork / repairs nearly impossible. A lot of my problems could have been due to a poor installation (San Luis Obispo), but the company also had awful customer service at the corporate level.

[teamtortoise]

I'll second the suggestion of an intercom system. I use a Sigtronics intercom and DC headsets (which I already had) in a totally stripped Baja Bug and they work great (w/o them, conversations required shouting). Unfortunately, my understanding is that they are illegal in California (unless set up to transmit external sounds--in particular, so that you can hear emergency vehicle sirens, etc.). Within CA I use the soft foam plugs (passenger typically chooses to use a headset).

[REEVESRacing]

Intercom.

[J.JOHNSON]

An Intercom Is Not Legal To Use On The Street. I Agree That You Need An Intercom But Not On The Highway. All Of My Experience W/ Line X Has Been Perfect. We Have Everthing Line X Ed From Prerunners To Trailers. You Could Also Use The Sound Proofing Paper That They Use At Stero Shops, But By The Time You Have Bought Enough To Put It From The Floor To The Roof You Will Have Spent More Than You Would Have On The Line X. I've Installed It On 2 Trucks And Yet To Have A Problem.

[charlie_brown]

Thanks for the responses. I did spry “lizard skin” ceramic coating that is more for heat then sound. I did not think that it would be this loud. They do have one that is just for noise but they recommend that you spay the sound control first then the ceramic. Its cool stuff, water based, sprayed it with my compressor, taped off what you don’t want and is “A” cert for fire (line X is very flammable and toxic). I spread out some mexi blankets around the cab and took it for a drive and that helped out a lot. I think I will spread out some of that felt (factor type) on the floor and than some dynamite on the fire wall and back wall. I was thinking of drilling a hole where the cage welds to the frame and fill it up with some lizard skin or silicone. Thanks for the help.

[Ryan_P]

Dynomat the cab.

-Ryan