Noisy OMC Sterndrive

[alleng8304]

Does anyone have ideas on how to quiet down the older model (1989) sterndrive. Basically you have a wooden box covering the engine with foam insulation. My insulation rotted years ago and I replaced it with hard foam insulation from a spray can. I think the hard stuff just bounces the sound off, perhaps I should use soft foam eggcrate. Any ideas? Thanks Allen G

 

[Bondo]

Ayuh,.... I lined my motorbox with several layers of closed cell shippin' foam,...

Been in there over 15 years now,...

 

[alleng8304]

Where do you get close cell shipping foam? Does deaden the sound?

 

[Bondo]

Where do you get close cell shipping foam? Does deaden the sound?

Ayuh,.... Of course it deadened the sounds,.... I got mine, Dumpster Divin',.....

You can also buy the stuff,....

 

[jerryjerry05]

Anything. Will help deaden the sound.
Some better than others.
The thicker the better.
The foam in my outboard cowl fell apart in just a few years.
It crumbled and ended up in the carbs and the flywheel. What a MESS.
I replaced it and it promptly fell off.
So I just cleaned up the junk and left it off.
They sell sound deadening at West Marine and on-line.

 

[redneck joe]

Bond how did you attach and closed cell just because it was what was in the dumpster?

 

[Bondo]

Bond how did you attach and closed cell just because it was what was in the dumpster?

Ayuh,.... My motorbox is home built, outa plywood, the foam is just stapled in,....

I wanted the closed cell stuff, 'cause it's water resistant, 'n seems to be stronger, longer lived than open cell,...

I just happened to get Lucky, 'n found a mountain of the stuff, 'bout that time,....

 

[redneck joe]

my box is glassed - would a spray adhesive work you think? And I've got some leftover 6" thick closed cell seat foam I can cut to 3" that should work.

 

[Bondo]

my box is glassed - would a spray adhesive work you think? And I've got some leftover 6" thick closed cell seat foam I can cut to 3" that should work.

Ayuh,.... I would think so,....

Ain't tried it, but gorrilla glue has stuck to many more things than I ever "Thought" it would,....