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05 /12/ 24, 8:48pm

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Subject: Re: Doghouse insulation replacement Author: Jeff Miller [ Next Thread | Previous Thread | Next Message | Previous Message ] Date Posted: 07/ 30/ 03, 7:30am In reply to: Bill Brayton 's message, "Doghouse insulation replacement" on 07/ 29/ 03, 4:07pm I have been very happy with the 1" 4-layer sound insulation from J.C.Whitney. You will need 1-1/2 rolls to do the lid and surround. I have used 3M-77 spray contact adhesive successfully, but you will have to really saturate the foam side to get good adheasion, otherwise you'll find your lid insulation sagging :~( Other contact adheasives will work also, pick your poison. The insulation is foam/rubber/foam/mylar foil, good sound and heat barrier. It is identical to the insulation I've found at West Marine, and also to what I bought from the dealer for my '77FC. Check the seals around the doghouse also, new engine mounts do wonders, as do a couple of pieces of flex-pipe downstream of the exhaust manifolds to isolate the engine vibration, this will also greatly help the life of exhaust manifold gaskets and studs (common problem on the 3208Na). Oh, perfect time to adjust valves and replace breather (PCV) gaskets/seals and rocker-cover gaskets. [ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

[> [> Subject: Re: Doghouse insulation replacement Author: Bill Brayton [ Edit | View ] Date Posted: 07/ 30/ 03, 8:05am Thanks Jeff. Good information. In regards to the flex pipe downstram of the exhaust manifold: Are you meaning to cut the exhaust pipe and replace with short length of flex pipe? Bill PT [ Post a Reply to This Message ]

[> [> [> Subject: Re: Doghouse insulation replacement Author: Jeff Miller [ Edit | View ] Date Posted: 08/ 3/ 03, 7:45am Yes. While replacing an exhaust manifold bolt, I cut a few inches out of each exhaust pipe and replaced with stainless flex-pipe and stainless band-clamps. The engine moves (rotates), but the pipe mountings don't allow the pipes to rise and fall, adding stress to the manifold bolts and trasmitting sound/vibration through the floor. [ Post a Reply to This Message ]