[C320-list] engine box insulation

[MICHAEL RAUH]

A number of years ago I ordered a Sounddown Noise Reduction Kit from Defender.com. I checked and it is still available.

They sell one kit with1/2-inch thick material and one with 1-inch thick material.  I found it easy to apply the 1/2-inch thick material I ordered.  It is still holding up well.

I also recommend checking around your boat for noise makers, e.g., a pot or a lid stored in the oven when not in use will vibrate on the metal interior when your engine is running.  You may have other items that can rattle when under power.  Put a towel under them or wrap them in something to reduce secondary noises.

Mike
#408  1997
On Your Mark 
Sent from my iPhone

> On Oct 10, 2022, at 19:21, B. Stumpp <bstumpp at comcast.net> wrote:
> 
> Last year my engine insulation finally deteriorated to the point where it
> had to be removed. 
> 
> I originally installed this insulation about 20 years ago so that is
> probably not too bad.  
> 
> It was the heavy, thick stuff sold by the  marine companies (1/2-3/4"
> thick?).
> 
> Cleaning up the glue left behind was a mess and, consequently, some still
> remains. 
> 
> The weight of that insulation made the covers very heavy and difficult to
> move around. 
> 
> 
> 
> There are a couple of insulation companies I've been considering that deal
> in automotive insulation and sound proofing.
> 
> They also offer "marine" products.   
> 
> I like the automotive insulations because they seem to be thinner but I need
> to determine how effective they are compared to the marine insulation   
> 
> The companies I am familiar with are Hushmat and Dynamat. 
> 
> 
> 
> Has anyone looked into these or other similar options?  Any experiences?  
> 
> 
> 
> Bruce Stumpp
> 
> Adventure, #647  
> 
> Frog Mortar Creek, Maryland
> 
> 
> 
> ----------------------------------------------------------------------
> 
> 
> 
> Message: 1
> 
> Date: Fri, 7 Oct 2022 16:15:45 -0700
> 
> From: "Bruce Heyman" <BruceHeyman at cox.net <mailto:BruceHeyman at cox.net> >
> 
> To: <C320-List at Catalina320.com <mailto:C320-List at Catalina320.com> >
> 
> Subject: Re: [C320-list] engine box insulation
> 
> Message-ID: <04d101d8daa2$bc21d2c0$34657840$@cox.net
> <mailto:04d101d8daa2$bc21d2c0$34657840$@cox.net> >
> 
> Content-Type: text/plain;             charset="us-ascii"
> 
> HI All,
> 
> I'm interested as well. 
> 
> The previous owner did a fantastic job installing the foam/lead/reflective
> type insulation/sound deadening material and it did a great job until a few
> 
> weeks ago.    During my last haul out the shipyard workers had to open up
> 
> the back of the engine space and for some reason it has all delaminated and
> disintegrated.  I have a horrific mess to clean up and had to be really
> careful brining the boat back into the slip to avoid the engine ingesting
> some of the disintegrating foam.
> 
> 
> 
> My understanding is that some of the newer materials are much more effective
> 
> and much thinner and don't involve lead.   I've not done any research on it
> 
> yet.
> 
> Thanks,
> 
> Bruce Heyman
> 
> Somerset #671   San Pedro (LA) California
> 
> 
> 
> -----Original Message-----
> 
> From: C320-list <c320-list-bounces at lists.catalina320.com
> <mailto:c320-list-bounces at lists.catalina320.com> > On Behalf Of Louis Spitz
> 
> Sent: Friday, October 7, 2022 11:30 AM
> 
> To: c320-list at catalina320.com <mailto:c320-list at catalina320.com> 
> 
> Subject: [C320-list] engine box insulation
> 
> Hi all,
> 
> I want to add insulation to the front and rear engine box covers. My Perkins
> is quite noisy, and needs a bit of quieting. Looking for specific
> recommendations and how well/poorly they performed.
> 
> Thank you.
> 
> Lou Spitz 1995 Catalina 320 # 195
> 
> 
> 
> End of C320-list Digest, Vol 4319, Issue 1
> 
> 
> 
>