MikeV

How about Lizard skin, here's the front half and rear hatch area. I sprayed the entire interior, floor to roof.

pontifex4

Wow, Mike -- that is a serious project! How much did you need to do the whole car? I've never used that product, in particular, but I do know that the results from spray-on deadener can be really good.

Cole

I had the entire interior of my Jeep TJ Rhino lined and was amazed at the sound deadening it provided.

It would add a fair amount of weight to a Porsche, but would also seal it from rust.

952turbo

Okay i'm confused...... I have a 951s/952 with 59,000 miles its pretty quiet, much quieter then my 98 blazer no sqeaks rattles and barely any i don't remember hearing any wind noise either unless its very windy outside. I live right by the ocean so it does get pretty windy out.

My pops has two n/a 944's and they were both pretty quiet neither one of them were really in the best of shape but they werent that loud either.. come to think of it my 952 is actually more quiet then my friends evo 8 and my old roomates 350z.. Dont get me wrong its not a lexus but its as loud as it needs to be considering its a sports car..

By the way its all stock i'm just wondering if maybe it would be more cost effective to replace all the seals and stock insulation then to replace it all with heavy dynamat

MikeV

3 gallons of Lizard skin will do two coats of entire inside with a little left over for touchup. I used the ceramic insulation, supposed to reduce noise 10-12 db and reduce temps 25-30+ degrees. We'll see!

86 951 Driver

If you want to do this on the cheap look for a product called Peal n Seal. I used it on my old neon and it was about as good as dynamat for half the price. Put a few layers on and your golden. You need a heat gun though. It works much better that way.

pontifex4

I had hoped to stay away from too much discussion about "cheaper than Dynamat" solutions (which tend either to be roofing tar or lightweight foam vent insulation) from hardware stores. It's not that I don't jump at a good bargain: it's that they simply aren't as effective or safe as a purpose-built material designed to insulate the interior of a car at all temperatures, and be non-toxic. If that isn't a priority for you, no problem. This is just how I did it. You will also notice that installations using the Home Depot-type materials tend to employ several layers of it, and often use toxic spray adhesive glue.

The reasoning for my choice of products is in my original posts on Page 1.

Avid installers have probably also noticed that I didn't even mention Dynamat. It's now gone through a few iterations, but the original Dynamat we had when I started was actually quite a poor product, and often needed to be piled up, layer-over-layer because it was fairly hard, and offered very little viscoelastic damping. That added a great deal of weight, and tended to alter the fit of interior trim panels.

So far in this installation, I've added about 20 lbs of weight, 10 of which is removable when I go to the track. It would certainly have been possible to do the same job with other, cheaper materials, but I suspect that it would require so much of them to get the same result that my panels wouldn't fit, anymore!

Keithr726

Excellent post!

pontifex4

Thanks, Keith. There's more to come!

By the way, your car is probably the nicest-looking one I've seen, and you inspired me to get a euro rear bumper. Have you done anything to the stereo which I can also shamelessly copy?

Charlie.

rporzio

Hi Charlie, I'm finally starting my project (modeled after yours) and I'll probably be using a Hush Mat kit that comes with a damping pad I'm assuming similar to your B Quiet product. I've taken a lot of inspiration from this thread and your work and just started this afternoon re boxing my sub in the spare tire well after chasing parasitic battery drain. Ralph

Robin W.

Making the 944 quiet....

VirginiaF1

Prolly still leaks oil..

J/K

Nice to see outside the box thinking.