Quote:
Originally Posted by GGR
Sorry for late reply.
Thank you very much. This is very helpful. I will surely contact you once I dive into it.
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Feel free! That looks like a great project.
Quote:
Originally Posted by Kaefer
Charlie,
Which above product do you recommend (or combination of products) for the back seat area of an aircooled 911 to reduce engine and exhaust volume? Currently I'm running without the stock sound pad and all of the sound deadening in the rear seat area has been removed.
I'd like to reinstall some current technology sound/vibration damper. It doesn't need to be extreme reduction in sound/vibration but I'd like to take the 'edge' off of running without any damping. Ideally without adding a whole bunch of weight.
Thanks in advance for the advice!
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Scott, the sound barrier products I mentioned (V-Comp, Luxury Liner Pro) are very heavy, and really only work well in large, continuous sheets (a full floor, for example).
The best bet is to buy between 20 and 30 square feet of the dampener product (B-Quiet Ultimate is good and is among the least expensive, Damplifier Pro is the premium option, and there are a wide variety of others, including Dynamat though I only recommend the Butyl-based products) and cut it into manageable squares or shapes that you can stick on after knocking on the panel with your knuckle to find the most resonant areas, as explained above. This will make an enormous difference, and may only add about 10 pounds if you use it sparingly.
It's very important to note that more is not necessarily better, and that there is really no reason to use a double layer of this type of product, or even to completely cover a surface.
Also, avoid duct seal, peel-and-stick insulation and other building materials. Those genuinely don't work as well, and in many cases, you have to use spray adhesive to get them to stick. Also, avoid all tar-based products.