[C320-list] Engine compartment sound proofing

[Kaare Wold]

I am interested in proceeding with this project to quiet down the rattlecan 
Yanmar.  I do have some concerns with using a plain Home Depot ceiling tile 
that is not  designed to function in an enclosed engine environment.  Would 
appreciate some feedback on the following question.
Have you owners insulated just the front engine cover or did you insulate 
both the front and rear?  Thanks for your comments.
Kaare Wold
Sheet Music #945
----- Original Message ----- 
From: "Jeffrey Brown" <oceanblues at mac.com>
To: <C320-List at Catalina320.com>
Sent: Thursday, June 19, 2014 6:54 PM
Subject: Re: [C320-list] Engine compartment sound proofing


> Someone on this forum suggest ceiling tiles, which I did and it worked 
> great and cheap.
>
> Jeff Brown
> 949-350-5123
>
>> On Jun 19, 2014, at 4:14 PM, Jeff Hare <Catalina at thehares.com> wrote:
>>
>> Hi Bill,
>>
>> Around 2003 I installed sound proofing in our engine compartment and it 
>> made
>> a big difference.  Mostly it cuts down the harshness and does drop the
>> volume significantly.  But it won't be "quiet".
>>
>> I used the 1" West Marine which is a moderately dense foam with a 
>> lead-like
>> layer in the middle to help hit multiple frequencies.
>>
>> I was able to do it in an hour or so.  Even today the adhesive is showing 
>> no
>> signs of letting go.  You peel the backing off and give it a certain 
>> amount
>> of time before you stick it on, but recall it was quite easy to dry fit 
>> and
>> cut with a razor knife.  I purchased the "kit" which came with some 
>> silver
>> seam tape and some metal plates with pin supports that they say to use 
>> for
>> overhead spans, but they're  not strictly necessary on our engine covers
>> because there is so little area to support.  I think I used one on the 
>> front
>> cover and none on the aft cover.  Both are fine today.
>>
>> Incidentally, if you use 1" on the Front (galley side) engine cover, the
>> lower pulley may just touch the insulation.  The trick here is to go 
>> ahead
>> and install the cover and run the engine.  It's just the very bottom of 
>> that
>> pulley that might rub just a tiny bit.  When you stop the engine you'll 
>> see
>> if and where it rubs and can either leave it or carve out a tiny bit.  It
>> really won't hurt anything.  You won't be able to use anything thicker 
>> than
>> 1" on the front.
>>
>> Also, if you purchase a roll of the 1/2" version, you can use it to stick 
>> on
>> the fridge side to keep the engine from melting your Ice Cream.  :)
>>
>> If I were to do it again, I'd still go this route.  I considered the 
>> Tiles,
>> but it was a lot more piecing together and more seams.  With the rolls of
>> stuff, you can cut and install the overhead piece first, then butt the 
>> sides
>> up tight to it and it helps hold the edges in place.  I cut mine so that
>> each cover just used one single piece (including the top), so that's an
>> option too.   The first thing you'll notice is how much heavier the 
>> covers
>> got.  The second thing is that the harshness is down considerably.
>>
>> Avoid the sound deadening paint scam.  It's a joke and doesn't work.
>>
>> Two pictures of the Job using the West Marine kit.
>>
>> http://tinyurl.com/EngineInsulation1
>> http://tinyurl.com/EngineInsulation2
>>
>> Good luck!
>>
>> -Jeff Hare
>>
>>
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On 
>> Behalf
>> Of Bill Hutt
>> Sent: Thursday, June 19, 2014 5:53 PM
>> To: C320-List at Catalina320.com
>> Subject: [C320-list] Engine compartment sound proofing
>>
>> Ok, new thread.
>> I'm looking at a product from Sailorssolutions.com called SPM. It's 1" 
>> thick
>> self adhesive tiles. Has anyone tried this with good results?
>>
>> Bill Hutt
>>
>>
>> Sent from my iPad=
>>