Is sound deadening on floor pans a good thing?

[angelfj1]

M

I wouldn't do it. When we restored the 250 back in 1983, it took me weeks of pig-work to remove the rubberized coating that the PO had smeared all over the interior panels. I had to remove this gunk to determine if the underlying metal was sound. A properly applied paint coating is IMO the way to go. If it ever needs to be touched up, it's no big deal. As far as road noise is concerned, all TR's, in fact most LBC's suffer from this due to the low ground clearance and low mass. However, if you use some proper "under-felt" under your carpets, you should have very acceptable results. Also , be sure that your sheet metal seams are sealed and that any rubber floor plugs are not leaking. In addition, be sure that you have a good seal between the transmission tunnel and the floor. I like to use the "rope" caulk sold for windows. If you ever get rained-on, and this can not be avoided, be sure to remove your carpets and under-felt, and hang them up to dry.

 

[newmexTR3]

I used Dynamat Extreme throughout the cockpit and I have to say it was a great choice. The cockpit is MUCH quieter, and cooler as well..

Here are some pics:

 

[Tinster]

be sure that you have a good seal between the transmission tunnel and the floor. I like to use the "rope" caulk sold for windows.

cool!!!

I'll go back in there and do this one!!

tip-a-tha-hat!, Frank

d

 

[Norton47]

I followed the advice of several people here and did not put any sound deadening on the actual floor boards. I thought I would try without it to see how well it worked and then would add it if needed. I don't think I need it.
I did however do other sound deadening and I like the results. The car is solid sounding and yet still has good exhaust sounds and reving noises.
Here are some photo's.



I covered the interior side of the firewall and the battery shelf. I did the inside of the doors, the gearbox tunnel and the rear shelf and wheel wells. I also did the trunk lid and the trunk sidewalls and wheel well arches and trunk floor.
I also did the engine hood and added the foam lining over it.
I used a product called RAAMMat. https://www.raamaudio.com/
It is similar to dynamat. I also used the thin foam sheet over the firewall area's.
FWIW

 

[AUSMHLY]

I used Dynamat Extreme throughout the cockpit and I have to say it was a great choice. The cockpit is MUCH quieter, and cooler as well..

Here are some pics:

Hi guys,
I'm from the Austin Healey side of this site.
The BCF is a great place to share information.
I also used Dynamat Xtreme.
Many reasons. The foil will help keep the heat down. The sound deading is much better than the spray on stuff. As for air pockets, I don't believe you'll get any if you take your time and apply it with care.

Make sure the surface is really clean. Use a heat gun to soften up the Dynamat then use a wooden roller or large socket to roll the surface down. It will adhere to all the divots in the sheet metal. The edges of the Dynamat will seal to each other nicely if you lay it down correctly and spend the time to cut it to fit. Heat the edges and they melt together.

Instead of laying down Jute (which will absorb water) under the carpet, I used Low-e insulation. It does not absorb water, is foil lined on both surfaces which helps with heat issues.