With my Herald, I liberally salted with Dynamat Sound Proofing Pads, which I
purchased at the local auto paint supply house for $20./pack of 6. These are
placed as follows-
Doors- 2 each side, 1 forward of skin strengthener, 1 behind, mounted(self
adhered) to the outer door skin.
Rear Wings-(All mounted to outer skin) 1 behind rear seat side panel, 1 at
rear section behind fuel tank, 1 (halved) above wheel well. This was on both
sides of car
Boot- (Not Dynamat) The interior kit came with boot floor insulation kit,
same type material as Dynamat, but large sheet(2 sections) cut to fit around
spare tyre well, on flat floor of boot.
Floor under rear seat- 3 pieces Dynamat, center one over-lapping outer ones.
As was originally insulated.
Floor- Rear Footwells- 1 piece each side, fitted one on driveshaft tunnel. 1
piece each side under seats, and, again, 1 fitted on driveshaft tunnel,
around brake handle mounting. Front footwells- 1 each side.
This arrangement has made for a pretty quiet car, with the hood down. I am
planning to add the other type insulation to the underside of the
transmission tunnel, but haven't bothered yet. The firewall is covered with
a closed cell foam set of pieces which also came with the interior kit. They
were precut to fit, and only required a little persuasion.
I saw no reason to insulate the bonnet. I did make sure I had good bonnet
strike cones in place(Neat trick- a little adjustment to them, and the
bonnet lined right up! All this after fiddling around with the other
adjustment points for literally hours to no avail!) These rubber cones take
out a great deal of rattle, if installed properly.
Frame mounts were also replaced, in the interest of silence.
Scott
----- Original Message -----
From: "john & patricia donnelly" <pdonnel1@san.rr.com>
To: "Triumphs Email List (E-mail)" <triumphs@autox.team.net>
Sent: Monday, November 11, 2002 10:44 AM
Subject: Sound Deadening - What works? What Doesn't?
> There seems to be few emails recently that discussed quieting down our
> Triumphs. Transmission tunnel insulation was the most recent. I've been
> interested in quieting down my TR but really wasn't sure 1) what really
> worked?, and 2) was it worth the expense/effort?
>
> What are the most common products used?
>
> I've seen bonnet insulators sold through the big three for almost $100.
> That's pretty pricey. Do they work? Alternatives?
>
> IMHO, it makes more sense to insulate on the outside rather than the
inside
> of the passenger compartment? If true, what have listers done to insulate
> the floor boards?
>
> There are big voids behind the kickpanels, in the doors, and between the
> trunk and the interior that I'm sure generate substantial echo. How do you
> insulate these?
>
> This can't be a new topic. Is there any web sites or other internet
sources
> that might help?
>
> Maybe using insulation won't make my car totally quiet inside like a new
> Beemer, but it would be nice to be able to talk to the person next to me
> without having to scream all the time. I'll be glad to consolidate your
> answers and forward later.
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