Engine Noise Reduction Help

[nk235]

I was wondering if anyone out there knows of any good fire proof material that is easy to work with that I could pad the inside of my engine compartment with? My engine is a 1983 Yanmar 3GMD raw water cooled and runs like a top but is very loud in general. I tried doing a search but couldn't find anything.

Thanks,
Nick

[Freesail99]

I am not sure what you are asking for. You say your engine is loud but you are asking for fire proving? Did you mean to say sound proving? If so look here

[mgiguere]

Hi

I put "Sound Down" around the engine box and bulk head to insulate the sound. Did that 20 years ago and it still works today. The original engine was an Atomic 4 (a lot more quiet) and replaced it with a Volvo 2002 diesel (a lot louder). Sound Down is in Marblehead or Salem Mass. It's lead lined padding with special screws and everything.

Good luck!

Moe
Chris Craft Apache 37 (S&S) sloop

[nk235]

Originally Posted by Freesail99

I am not sure what you are asking for. You say your engine is loud but you are asking for fire proving? Did you mean to say sound proving? If so look here

Sorry I titled the thread engine noise reduction but guess I forgot to put that in the wording in the actual thread. as for fire proofing I meant I just want the sound proofing material to be fire proof as well.

[BarryL]

Hi Nick,

The PO of my boat put in some nice sound suppression stuff (at least I don't think it came from the factory). The engine in this boat is much quieter than the engine in my last boat.

I'll be around the rest of this week and Sunday too if you want to come over and see / hear the engine.

let me know.

Barry

[nk235]

Originally Posted by mgiguere

Hi

I put "Sound Down" around the engine box and bulk head to insulate the sound. Did that 20 years ago and it still works today. The original engine was an Atomic 4 (a lot more quiet) and replaced it with a Volvo 2002 diesel (a lot louder). Sound Down is in Marblehead or Salem Mass. It's lead lined padding with special screws and everything.

Good luck!

Moe
Chris Craft Apache 37 (S&S) sloop

Thanks. I'll have to check it out.

[nk235]

Originally Posted by BarryL

Hi Nick,

The PO of my boat put in some nice sound suppression stuff (at least I don't think it came from the factory). The engine in this boat is much quieter than the engine in my last boat.

I'll be around the rest of this week and Sunday too if you want to come over and see / hear the engine.

let me know.

Barry

Thanks Barry. I'm heading down to the boat Thursday around noon and then heading out to Greenport for the weekend so if your around on thurs maybe we'll catch each other.

[SteveInMD]

Make sure you still get good ventilation to the engine compartment after you sound proof. If you reduce air flow and temps in there rise above 130 F while running you could have problems. The thin hot air means the engine wont get enough oxygen in the combustion chamber to run properly. You may need to improve your blower if you do a lot of sound proofing.

I'd mount a thermometer in the engine compartment. I got and indoor outdoor model so I get cabin temp and engine compartment temp.

[DwayneSpeer]

Sailors Solutions has a nice sound proofing material that comes in one foot square sections with peel and stick backing. You can find it here LED lighting, soundproof, Sailor's Solutions Inc.

It's a bit expensive but works well, at least for me.

[Freesail99]

Originally Posted by DwayneSpeer

Sailors Solutions has a nice sound proofing material that comes in one foot square sections with peel and stick backing. You can find it here LED lighting, soundproof, Sailor's Solutions Inc.

It's a bit expensive but works well, at least for me.

That is what I suggested in the very first reply to this thread.



I am not sure what you are asking for. You say your engine is loud but you are asking for fire proving? Did you mean to say sound proving? If so look here