[C320-list] Engine Sound Proofing Insulation

[Monte B.]

Duh! It is a liquid cooled engine and the ambient air temp. should not
appreciably affect the engine operating temp. If the engine cooling system
is functioning properly the fresh water I.E. antifreeze side transfers
residual engine heat to the raw water side and deposits said heat in the
lake, ocean, whatever. I did the engine cover insulation on my boat 7 yrs.
ago and used the WM sheets as opposed to the tiles. I glued and screwed. The
vertical stuff I relied on the adhesive and the horizontal stuff I also used
very short sheet metal screws with area washers. None has come detached to
date. I would agree with those that say this doesn't create a quiet boat but
I would say on a subjective note that my efforts probably reduced the salon
ambient noise by 10 decibels. It is possible to have a normal conversation
below deck with the engine at 2800 RPM's. That is what I was after and what
I got. I would also say that the insulation traps and holds some ambient
heat and thus keeps the aft berth hot for a longer period of time. NO free
lunch! Run with the aft berth hatches open and turn off the engine well
before nap time. As well as the covers, fore and aft I covered the
fiberglass on the port side behind the hoses, coolant recovery tank, ET. AL.
I also used the foam stuff around the edges. This will result in a
considerable weight gain for the covers so think about handles at the
outset. Someone already mentioned this and I second the motion as I had to
go back and peel to put them on later. This is a half day job for the gifted
and all day for the rest of us. Good Luck and silent running!

Monte
Laima #620

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Kirk
McCullough
Sent: Sunday, November 09, 2008 2:39 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Engine Sound Proofing Insulation

I also used the West Marine sheets, it works well and  no increase in engine
temperature.

Kirk

#124

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of
dickwalker at att.net
Sent: 07 November 2008 08:08
To: C320-List at Catalina320.com; C320-List at Catalina320.com
Cc: Jamie Pett
Subject: Re: [C320-list] Engine Sound Proofing Insulation


Not that I can tell.

I found the big sheets easer to install than the tiles; each to their own.
--
Richard A. Walker, Ph.D. 
740 Olive Ave. 
Coronado, CA 92118-2136 
(619) 435-8986 




-------------- Original message from "Jamie Pett" <JPett at JP2ARCHITECTS.COM>:
-------------- 


> I have been following this thread as I am interested in cutting engine 
> noise also. Does the soundproofing installation contribute to engine 
> compartment heat ? Does the engine run noticibly hotter ? 
> 
> Jamie Pett 
> 'Bella Luna' #614 
> 
> 
> 
> 
> -----Original Message----- 
> From: c320-list-bounces at lists.catalina320.com 
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of warren 
> updike 
> Sent: Thursday, November 06, 2008 11:02 PM 
> To: C320-List at Catalina320.com 
> Subject: Re: [C320-list] Engine Sound Proofing Insulation 
> 
> Brian, I ordered the medium kit, SPM18, with 18 tiles. This was 
> sufficient 
> for both covers all surfaces. The adhesive is quite strong as I've had 
> no 
> problem with it these past three years. No mechanical fasteners were 
> necessary. 
> 
> 
> 
> I cleaned all surfaces with Interlux 202 which is a fiberglass cleaner 
> not 
> so volatile as MEK or Acetone. It will soften the surface of the inside 
> of 
> the covers so work quickly and don't go back over so much. 
> 
> 
> 
> I did not bend the tiles around the inside curves of the covers. I 
> butted 
> the edges so that there was a slight overlap of the aluminized cover and 
> the 
> foam backing was in contact. I arranged the tiles from these butt edges 
> and 
> cut where necessary joining the edges in the same way as on the curves. 
> 
> 
> 
> Cuts were made with a utility knife and a straight edge. Using the 
> straight 
> edge, I would compress the tile and score with the knife then two or 
> three 
> more passes through the foam backing. The cuts were clean an accurate. I 
> tried using scissors but didn't find they answered the need. 
> 
> 
> 
> I covered too some of the gel-coated surfaces on the port side. I had 
> about 
> 5 tiles left over. Sailor Solutions will give a credit for unused tiles 
> less 
> a restock charge and, of course, plus the shipping. I ended up selling 
> to 
> another boater. I don't know why I didn't use the extra tiles to cover 
> the 
> under side of the particle board covers under the mattresses. I don't 
> remember if I even considered it. You should. 
> 
> 
> 
> On my #62 with the Perkins engine there was no problem with spacing as I 
> had 
> no place where anything touched the tiles. You may find this an issue if 
> you 
> have the Yanmar engine as I understand others have had to cut out some 
> insulation around the engine pulley or water pump pulley. 
> 
> 
> 
> The sound reduction is significant though not so much as in your car. 
> Much 
> of the "sound" is vibrations passing through the hull by way of engine 
> mounts and leaks around joints. By consulting a sound proofing 
> consultant, I 
> learned that anywhere air can pass in/out of the space is a place where 
> sound will escape too. To that end, I sealed all edges of the covers 
> with a 
> foam tape. I think that helped some too. Also, try to keep the aft cabin 
> door closed when motoring. That may help some too. 
> 
> 
> 
> Good luck with your project. I ask that you come back to this list with 
> a 
> report on your project so others can benefit by your experience. 
> 
> 
> 
> Warren & Pattie Updike 
> 
> Catalina 320, #62, "Warr De Mar" 
> 
> Middle River, Chesapeake Bay 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -----Original Message----- 
> From: Amirault Family - S&B [mailto:amiraults at sympatico.ca] 
> Sent: Wednesday, November 05, 2008 5:59 PM 
> To: c320-list at lists.catalina320.com 
> Subject: Re: [C320-list] Engine Sound Proofing Insulation 
> 
> 
> 
> Mr Updike: 
> 
> 
> 
> I contacted Sailor Solutions today at the link you supplied, and they 
> 
> confirmed that they ship to Canada. I intend to order now for a spring 
> 
> pre-launch install. Could you confirm for me how many tiles you used, 
> 
> whether the number is for both front and rear engine covers, and 
> includes 
> 
> the inside tops of each, and whether the adhesive is strong enough to 
> stick 
> 
> to the cover tops or if it is necessary to screw these in place? 
> 
> 
> 
> Having done the install, did you find the effort worthwhile and that the 
> 
> noise reduction was satisfactory? What did you use to clean the cover 
> 
> interiors and prepare them for the tiles? Were the tiles sufficiently 
> 
> flexible to adhere around the curved corners of the covers? Once 
> installed, 
> 
> do the covers still clear the engine external moving parts? 
> 
> 
> 
> For this relief, much thanks. 
> 
> 
> 
> Regards; 
> 
> 
> 
> Brian Amirault 
> 
> 
> 
> 797 Waltzing Bear, too 
> 
> 
>